{
  "schema": 1,
  "date": "2026-09-13",
  "tools": {
    "syq": "0.6.0",
    "rclone": "1.75.1"
  },
  "limits": [
    "Every displayed current-release timing is separate from the interleaved 0.5.2 drift controls.",
    "GNU time wraps timed commands; independent checksum and stated metadata checks run outside timing. Largest-process RSS is not aggregate memory.",
    "Shared hosts, metadata caches and NFS server caches are uncontrolled. Endpoint placeholders replace private operational identities.",
    "Short or incomplete series remain in the data; chart eligibility is computed from recorded repetitions, verification and duration.",
    "Portable recipes and matching public harness modules are available; original operational drivers and host details remain private."
  ],
  "featured": [
    {
      "id": "wan-repeat-one8g",
      "title": "WAN: one 8 GiB file",
      "workload": "One 8 GiB regular file. Flat directory, warm tmpfs source → remote XFS RAID; approximately 262.3 ms RTT. Sender NIC: 1 Gb/s (125 MB/s nominal ceiling).",
      "caveat": "Three verified repetitions per current-release setting. A fresh 0.5.2 control followed the first syq run. Shared host and server-cache conditions are recorded in the data.",
      "preparation": {
        "files": 1,
        "size": 8589934592,
        "directories": 0,
        "original": "Sequential Python Random(9911).randbytes in 1 MiB blocks; fully written pseudorandom data, no sparse files; flat f0000… names; file mtimes fixed to 1700000000. Memory-resident tmpfs source."
      }
    },
    {
      "id": "wan-repeat-many32g",
      "title": "WAN: 32 × 1 GiB files",
      "workload": "32 × 1 GiB regular files. Flat directory, warm tmpfs source → remote XFS RAID; approximately 262.3 ms RTT. Sender NIC: 1 Gb/s (125 MB/s nominal ceiling).",
      "caveat": "Three verified repetitions per current-release setting. A fresh 0.5.2 control followed the first syq run. Shared host and server-cache conditions are recorded in the data.",
      "preparation": {
        "files": 32,
        "size": 1073741824,
        "directories": 0,
        "original": "Sequential Python Random(9911).randbytes in 1 MiB blocks; fully written pseudorandom data, no sparse files; flat f0000… names; file mtimes fixed to 1700000000. Memory-resident tmpfs source."
      }
    },
    {
      "id": "main-write",
      "title": "Small files → mounted NFS",
      "workload": "40,000 × 4 KiB files in 256 directories. Local /tmp source → mounted NFSv4.2 destination.",
      "caveat": "Three verified repetitions per current-release setting. A fresh 0.5.2 control followed the first syq run. Shared host and server-cache conditions are recorded in the data.",
      "preparation": {
        "files": 40000,
        "size": 4096,
        "directories": 256,
        "original": "Current harness: generated pseudorandom file contents with seed 9911; round-robin placement in numbered directories. The harness generated data with O_DIRECT where supported and requested fixture-page eviction with fadvise; metadata caches stayed warm. NFS server cache was not controlled."
      }
    },
    {
      "id": "nfs-repeat-small-read",
      "title": "Small files ← mounted NFS",
      "workload": "400,000 × 4 KiB files in 256 directories (1.53 GiB total). Mounted NFSv4.2 source → local XFS RAID destination.",
      "caveat": "Three verified repetitions per current-release setting. A fresh 0.5.2 control followed the first syq run. Shared host and server-cache conditions are recorded in the data. Source contents and metadata were read before every timed copy.",
      "preparation": {
        "files": 400000,
        "size": 4096,
        "directories": 256,
        "seed": 9911
      }
    },
    {
      "id": "raid-explore-local-small",
      "title": "Small files on local RAID",
      "workload": "40,000 × 4 KiB files in 256 directories. Copy between directories on the same XFS RAID filesystem.",
      "caveat": "Three verified repetitions per current-release setting. A fresh 0.5.2 control followed the first syq run. Shared host and server-cache conditions are recorded in the data.",
      "preparation": {
        "files": 40000,
        "size": 4096,
        "directories": 256,
        "original": "Current harness: generated pseudorandom file contents with seed 9911; round-robin placement in numbered directories. The harness generated data with O_DIRECT where supported and requested fixture-page eviction with fadvise; metadata caches stayed warm. "
      }
    },
    {
      "id": "raid-explore-nfs-large-write",
      "title": "Large file → mounted NFS",
      "workload": "One 2 GiB file. XFS RAID source → mounted NFSv4.2 destination.",
      "caveat": "Three verified repetitions per current-release setting. A fresh 0.5.2 control followed the first syq run. Shared host and server-cache conditions are recorded in the data.",
      "preparation": {
        "files": 1,
        "size": 2147483648,
        "directories": 0,
        "original": "Current harness: generated pseudorandom file contents with seed 9911; large files in the source tree. The harness generated data with O_DIRECT where supported and requested fixture-page eviction with fadvise; metadata caches stayed warm. NFS server cache was not controlled."
      }
    },
    {
      "id": "raid-explore-nfs-large-read",
      "title": "Large file ← mounted NFS",
      "workload": "One 2 GiB file. Mounted NFSv4.2 source → XFS RAID destination.",
      "caveat": "Three verified repetitions per current-release setting. A fresh 0.5.2 control followed the first syq run. Shared host and server-cache conditions are recorded in the data.",
      "preparation": {
        "files": 1,
        "size": 2147483648,
        "directories": 0,
        "original": "Current harness: generated pseudorandom file contents with seed 9911; large files in the source tree. The harness generated data with O_DIRECT where supported and requested fixture-page eviction with fadvise; metadata caches stayed warm. NFS server cache was not controlled."
      }
    },
    {
      "id": "raid-explore-local-large",
      "title": "Large file on the same filesystem",
      "workload": "One 2 GiB file. Source and destination on the same XFS RAID filesystem.",
      "caveat": "Three verified repetitions per current-release setting. A fresh 0.5.2 control followed the first syq run. Kernel-assisted copying may share extents; these rates are not physical disk bandwidth.",
      "preparation": {
        "files": 1,
        "size": 2147483648,
        "directories": 0,
        "original": "Current harness: generated pseudorandom file contents with seed 9911; large files in the source tree. The harness generated data with O_DIRECT where supported and requested fixture-page eviction with fadvise; metadata caches stayed warm. "
      },
      "presentation": "capability"
    },
    {
      "id": "lan-repeat-small",
      "title": "LAN: 600,000 small files",
      "workload": "600,000 × 4 KiB files in 256 directories (2.29 GiB total). RAID → RAID, approximately 0.2 ms RTT; both servers use 2 × 10 Gb/s bonds.",
      "caveat": "Three verified repetitions per current-release setting. A fresh 0.5.2 control followed the first syq run. Shared host and server-cache conditions are recorded in the data. Both hosts use two-port 10 Gb/s bonds; this refresh did not repeat the earlier per-port traffic diagnostic.",
      "preparation": {
        "files": 600000,
        "size": 4096,
        "directories": 256,
        "seed": 9911
      }
    },
    {
      "id": "fast-corrected-8g",
      "title": "Fast fabric: one large file",
      "workload": "One 8 GiB file, tmpfs → tmpfs between servers in the same data center.",
      "caveat": "Three verified repetitions per current-release setting. A fresh 0.5.2 control followed the first syq run. Shared host and server-cache conditions are recorded in the data. Timing includes an empty fixture probe; syq used eight rails while rclone used one.",
      "preparation": {
        "files": 1,
        "size": 8589934592,
        "directories": 0,
        "original": "Current harness: generated pseudorandom file contents with seed 9911; large files in the source tree. The harness generated data with O_DIRECT where supported and requested fixture-page eviction with fadvise; metadata caches stayed warm. Tmpfs remained memory-resident; this fixture also included an empty O_DIRECT probe file."
      },
      "presentation": "capability"
    },
    {
      "id": "cloud-rclone-large",
      "title": "Hetzner WAN: one 4 GiB file",
      "workload": "One 4 GiB file, warm tmpfs source to a cloud VM root filesystem. Germany to US East Coast; approximately 108 ms RTT. Two CCX23 guests with four dedicated vCPUs and 16 GiB RAM each.",
      "caveat": "Three verified copies per setting. SFTP ran in a later block after a host-key correction; additional paired release controls matched. No final durability flush.",
      "preparation": {
        "files": 1,
        "size": 4294967296,
        "directories": 0,
        "seed": 9911
      }
    }
  ],
  "rows": [
    {
      "scenario": "fast-corrected-8g",
      "tool": "syq",
      "repeat": 0,
      "bytes": 8589934592,
      "files": 2,
      "wall_s": 6.223769146949053,
      "argv": [
        "env",
        "SYQ_DEBUG=1",
        "syq",
        "rsync",
        "-rt",
        "--no-progress",
        "--syq-no-bootstrap",
        "--rsync-path",
        "REMOTE_RESOURCE_HELPER",
        "-e",
        "SSH_WRAPPER",
        "SOURCE/",
        "USER@SERVER:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 2
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "order": [
          [
            "syq",
            "syq-052",
            "sftp-default",
            "sftp-chunk128",
            "webdav-t16"
          ],
          [
            "sftp-default",
            "sftp-chunk128",
            "webdav-t16",
            "syq"
          ],
          [
            "sftp-chunk128",
            "webdav-t16",
            "syq",
            "sftp-default"
          ]
        ],
        "seed": 9911,
        "cache": "evict",
        "durable": false,
        "verify": true,
        "probes": false,
        "tool_timeout": 120,
        "slow_cutoff": 0
      },
      "workload": [
        {
          "name": "data",
          "kind": "large-file",
          "files": 1,
          "bytes": 8589934592
        }
      ],
      "cache": "evict",
      "case_error": false,
      "cache_limitations": [
        "metadata cache (dentries/inodes) is not evicted: generation, checksum, and repeats all warm it",
        "sftp-default: rclone sftp; harness verification checks regular-file contents, not metadata",
        "sftp-default: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "sftp-chunk128: rclone sftp; harness verification checks regular-file contents, not metadata",
        "sftp-chunk128: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "webdav-t16: rclone webdav; harness verification checks regular-file contents, not metadata",
        "webdav-t16: WebDAV scratch mapping must pass a check before copying; metadata and rename semantics depend on the server",
        "remote end: fixture pages evicted on the client only",
        "data: O_DIRECT unsupported here; evicted with fadvise instead"
      ],
      "host": {
        "kernel": "5.15.0-126-generic",
        "machine": "x86_64",
        "cpus": 160,
        "python": "3.13.13"
      },
      "filesystems": {
        "source": "tmpfs",
        "destination": "tmpfs"
      },
      "tool_identity": {
        "version": "syq 0.6.0",
        "sha256": "4fc2f442d88f83d05bf61a0b4eead718b681678b7c7ad6a52696c16d3f479a24"
      },
      "capture_sha256": "f10cb4f07fe6cc7571611c30d22f352f1a68e1093f71de57c05b05501e9bba45",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "network": {
        "rtt_avg_ms": 0.213
      }
    },
    {
      "scenario": "fast-corrected-8g",
      "tool": "syq",
      "repeat": 1,
      "bytes": 8589934592,
      "files": 2,
      "wall_s": 5.922916378825903,
      "argv": [
        "env",
        "SYQ_DEBUG=1",
        "syq",
        "rsync",
        "-rt",
        "--no-progress",
        "--syq-no-bootstrap",
        "--rsync-path",
        "REMOTE_RESOURCE_HELPER",
        "-e",
        "SSH_WRAPPER",
        "SOURCE/",
        "USER@SERVER:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 2
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "order": [
          [
            "syq",
            "syq-052",
            "sftp-default",
            "sftp-chunk128",
            "webdav-t16"
          ],
          [
            "sftp-default",
            "sftp-chunk128",
            "webdav-t16",
            "syq"
          ],
          [
            "sftp-chunk128",
            "webdav-t16",
            "syq",
            "sftp-default"
          ]
        ],
        "seed": 9911,
        "cache": "evict",
        "durable": false,
        "verify": true,
        "probes": false,
        "tool_timeout": 120,
        "slow_cutoff": 0
      },
      "workload": [
        {
          "name": "data",
          "kind": "large-file",
          "files": 1,
          "bytes": 8589934592
        }
      ],
      "cache": "evict",
      "case_error": false,
      "cache_limitations": [
        "metadata cache (dentries/inodes) is not evicted: generation, checksum, and repeats all warm it",
        "sftp-default: rclone sftp; harness verification checks regular-file contents, not metadata",
        "sftp-default: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "sftp-chunk128: rclone sftp; harness verification checks regular-file contents, not metadata",
        "sftp-chunk128: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "webdav-t16: rclone webdav; harness verification checks regular-file contents, not metadata",
        "webdav-t16: WebDAV scratch mapping must pass a check before copying; metadata and rename semantics depend on the server",
        "remote end: fixture pages evicted on the client only",
        "data: O_DIRECT unsupported here; evicted with fadvise instead"
      ],
      "host": {
        "kernel": "5.15.0-126-generic",
        "machine": "x86_64",
        "cpus": 160,
        "python": "3.13.13"
      },
      "filesystems": {
        "source": "tmpfs",
        "destination": "tmpfs"
      },
      "tool_identity": {
        "version": "syq 0.6.0",
        "sha256": "4fc2f442d88f83d05bf61a0b4eead718b681678b7c7ad6a52696c16d3f479a24"
      },
      "capture_sha256": "f10cb4f07fe6cc7571611c30d22f352f1a68e1093f71de57c05b05501e9bba45",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "network": {
        "rtt_avg_ms": 0.213
      }
    },
    {
      "scenario": "fast-corrected-8g",
      "tool": "syq",
      "repeat": 2,
      "bytes": 8589934592,
      "files": 2,
      "wall_s": 6.073472509160638,
      "argv": [
        "env",
        "SYQ_DEBUG=1",
        "syq",
        "rsync",
        "-rt",
        "--no-progress",
        "--syq-no-bootstrap",
        "--rsync-path",
        "REMOTE_RESOURCE_HELPER",
        "-e",
        "SSH_WRAPPER",
        "SOURCE/",
        "USER@SERVER:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 2
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "order": [
          [
            "syq",
            "syq-052",
            "sftp-default",
            "sftp-chunk128",
            "webdav-t16"
          ],
          [
            "sftp-default",
            "sftp-chunk128",
            "webdav-t16",
            "syq"
          ],
          [
            "sftp-chunk128",
            "webdav-t16",
            "syq",
            "sftp-default"
          ]
        ],
        "seed": 9911,
        "cache": "evict",
        "durable": false,
        "verify": true,
        "probes": false,
        "tool_timeout": 120,
        "slow_cutoff": 0
      },
      "workload": [
        {
          "name": "data",
          "kind": "large-file",
          "files": 1,
          "bytes": 8589934592
        }
      ],
      "cache": "evict",
      "case_error": false,
      "cache_limitations": [
        "metadata cache (dentries/inodes) is not evicted: generation, checksum, and repeats all warm it",
        "sftp-default: rclone sftp; harness verification checks regular-file contents, not metadata",
        "sftp-default: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "sftp-chunk128: rclone sftp; harness verification checks regular-file contents, not metadata",
        "sftp-chunk128: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "webdav-t16: rclone webdav; harness verification checks regular-file contents, not metadata",
        "webdav-t16: WebDAV scratch mapping must pass a check before copying; metadata and rename semantics depend on the server",
        "remote end: fixture pages evicted on the client only",
        "data: O_DIRECT unsupported here; evicted with fadvise instead"
      ],
      "host": {
        "kernel": "5.15.0-126-generic",
        "machine": "x86_64",
        "cpus": 160,
        "python": "3.13.13"
      },
      "filesystems": {
        "source": "tmpfs",
        "destination": "tmpfs"
      },
      "tool_identity": {
        "version": "syq 0.6.0",
        "sha256": "4fc2f442d88f83d05bf61a0b4eead718b681678b7c7ad6a52696c16d3f479a24"
      },
      "capture_sha256": "f10cb4f07fe6cc7571611c30d22f352f1a68e1093f71de57c05b05501e9bba45",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "network": {
        "rtt_avg_ms": 0.213
      }
    },
    {
      "scenario": "fast-corrected-8g",
      "tool": "sftp-default",
      "repeat": 0,
      "bytes": 8589934592,
      "files": 2,
      "wall_s": 32.767548996955156,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--sftp-host",
        "SERVER",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--sftp-user",
        "USER",
        "--sftp-host",
        "SERVER",
        "--sftp-port",
        "PORT",
        "--sftp-user",
        "USER",
        "--sftp-key-file",
        "KEY_FILE",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--create-empty-src-dirs",
        "--contimeout",
        "5s",
        "--retries",
        "1",
        "--",
        ":local:SOURCE",
        ":sftp:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 2
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "order": [
          [
            "syq",
            "syq-052",
            "sftp-default",
            "sftp-chunk128",
            "webdav-t16"
          ],
          [
            "sftp-default",
            "sftp-chunk128",
            "webdav-t16",
            "syq"
          ],
          [
            "sftp-chunk128",
            "webdav-t16",
            "syq",
            "sftp-default"
          ]
        ],
        "seed": 9911,
        "cache": "evict",
        "durable": false,
        "verify": true,
        "probes": false,
        "tool_timeout": 120,
        "slow_cutoff": 0
      },
      "workload": [
        {
          "name": "data",
          "kind": "large-file",
          "files": 1,
          "bytes": 8589934592
        }
      ],
      "cache": "evict",
      "case_error": false,
      "cache_limitations": [
        "metadata cache (dentries/inodes) is not evicted: generation, checksum, and repeats all warm it",
        "sftp-default: rclone sftp; harness verification checks regular-file contents, not metadata",
        "sftp-default: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "sftp-chunk128: rclone sftp; harness verification checks regular-file contents, not metadata",
        "sftp-chunk128: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "webdav-t16: rclone webdav; harness verification checks regular-file contents, not metadata",
        "webdav-t16: WebDAV scratch mapping must pass a check before copying; metadata and rename semantics depend on the server",
        "remote end: fixture pages evicted on the client only",
        "data: O_DIRECT unsupported here; evicted with fadvise instead"
      ],
      "host": {
        "kernel": "5.15.0-126-generic",
        "machine": "x86_64",
        "cpus": 160,
        "python": "3.13.13"
      },
      "filesystems": {
        "source": "tmpfs",
        "destination": "tmpfs"
      },
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "f10cb4f07fe6cc7571611c30d22f352f1a68e1093f71de57c05b05501e9bba45",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "network": {
        "rtt_avg_ms": 0.213
      }
    },
    {
      "scenario": "fast-corrected-8g",
      "tool": "sftp-default",
      "repeat": 1,
      "bytes": 8589934592,
      "files": 2,
      "wall_s": 33.56937559507787,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--sftp-host",
        "SERVER",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--sftp-user",
        "USER",
        "--sftp-host",
        "SERVER",
        "--sftp-port",
        "PORT",
        "--sftp-user",
        "USER",
        "--sftp-key-file",
        "KEY_FILE",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--create-empty-src-dirs",
        "--contimeout",
        "5s",
        "--retries",
        "1",
        "--",
        ":local:SOURCE",
        ":sftp:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 2
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "order": [
          [
            "syq",
            "syq-052",
            "sftp-default",
            "sftp-chunk128",
            "webdav-t16"
          ],
          [
            "sftp-default",
            "sftp-chunk128",
            "webdav-t16",
            "syq"
          ],
          [
            "sftp-chunk128",
            "webdav-t16",
            "syq",
            "sftp-default"
          ]
        ],
        "seed": 9911,
        "cache": "evict",
        "durable": false,
        "verify": true,
        "probes": false,
        "tool_timeout": 120,
        "slow_cutoff": 0
      },
      "workload": [
        {
          "name": "data",
          "kind": "large-file",
          "files": 1,
          "bytes": 8589934592
        }
      ],
      "cache": "evict",
      "case_error": false,
      "cache_limitations": [
        "metadata cache (dentries/inodes) is not evicted: generation, checksum, and repeats all warm it",
        "sftp-default: rclone sftp; harness verification checks regular-file contents, not metadata",
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        "rclone-default: rclone local; harness verification checks regular-file contents, not metadata",
        "rclone-s8: rclone local; harness verification checks regular-file contents, not metadata"
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          [
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            "rclone-webdav",
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          [
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        "rclone-webdav: rclone webdav; harness verification checks regular-file contents, not metadata",
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        "rclone-sftp: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "rclone-webdav: rclone webdav; harness verification checks regular-file contents, not metadata",
        "rclone-webdav: WebDAV scratch mapping must pass a check before copying; metadata and rename semantics depend on the server",
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        "--webdav-vendor",
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        "--ca-cert",
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        "--transfers",
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        "--webdav-pacer-min-sleep",
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        ":webdav:DESTINATION"
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            "rclone-webdav"
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          [
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            "rclone-webdav",
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            "rclone-sftp"
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        "rclone-webdav: rclone webdav; harness verification checks regular-file contents, not metadata",
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      "argv": [
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        "--no-check-dest",
        "--contimeout",
        "10s",
        "--timeout",
        "60s",
        "--retries",
        "1",
        "--webdav-vendor",
        "rclone",
        "--ca-cert",
        "CA_CERT",
        "--transfers",
        "16",
        "--webdav-pacer-min-sleep",
        "2ms",
        "--",
        ":local:SOURCE",
        ":webdav:DESTINATION"
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      "metadata": {
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        "mismatches": 0,
        "entries": 1
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            "rclone-sftp",
            "rclone-webdav"
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          [
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            "rclone-webdav",
            "syq"
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          [
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            "rclone-sftp"
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      "cache_limitations": [
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        "rclone-sftp: rclone sftp; harness verification checks regular-file contents, not metadata",
        "rclone-sftp: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "rclone-webdav: rclone webdav; harness verification checks regular-file contents, not metadata",
        "rclone-webdav: WebDAV scratch mapping must pass a check before copying; metadata and rename semantics depend on the server",
        "remote end: fixture pages evicted on the client only",
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      "argv": [
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        "https://SERVER:PORT/",
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        "--no-check-dest",
        "--contimeout",
        "10s",
        "--timeout",
        "60s",
        "--retries",
        "1",
        "--webdav-vendor",
        "rclone",
        "--ca-cert",
        "CA_CERT",
        "--transfers",
        "16",
        "--webdav-pacer-min-sleep",
        "2ms",
        "--",
        ":local:SOURCE",
        ":webdav:DESTINATION"
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      "exit_code": 0,
      "content_verified": true,
      "metadata": {
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        "mismatches": 0,
        "entries": 1
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      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
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            "rclone-sftp",
            "rclone-webdav"
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          [
            "rclone-sftp",
            "rclone-webdav",
            "syq"
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          [
            "rclone-webdav",
            "syq",
            "rclone-sftp"
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        "cache": "warm",
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        "verify": true,
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        "slow_cutoff": 0
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          "bytes": 4294967296,
          "files": 1
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      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
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        "rclone-sftp: rclone sftp; harness verification checks regular-file contents, not metadata",
        "rclone-sftp: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "rclone-webdav: rclone webdav; harness verification checks regular-file contents, not metadata",
        "rclone-webdav: WebDAV scratch mapping must pass a check before copying; metadata and rename semantics depend on the server",
        "remote end: fixture pages evicted on the client only",
        "The WebDAV listener remained active during the other protocol settings; server and background CPU were not isolated."
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      "host": {
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    {
      "scenario": "cloud-rclone-large",
      "tool": "rclone-sftp",
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      "bytes": 4294967296,
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      "wall_s": 235.25829874300007,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--sftp-host",
        "SERVER",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--create-empty-src-dirs",
        "--no-check-dest",
        "--contimeout",
        "10s",
        "--timeout",
        "60s",
        "--retries",
        "1",
        "--sftp-host",
        "SERVER",
        "--sftp-user",
        "USER",
        "--sftp-key-file",
        "KEY_FILE",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--sftp-md5sum-command",
        "md5sum",
        "--sftp-sha1sum-command",
        "sha1sum",
        "--transfers",
        "32",
        "--sftp-chunk-size",
        "255Ki",
        "--sftp-concurrency",
        "256",
        "--",
        ":local:SOURCE",
        ":sftp:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 1
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "order": [
          [
            "rclone-sftp",
            "syq-052",
            "syq"
          ],
          [
            "syq",
            "syq-052",
            "rclone-sftp"
          ],
          [
            "rclone-sftp"
          ]
        ],
        "seed": 9911,
        "cache": "warm",
        "durable": false,
        "verify": true,
        "probes": false,
        "tool_timeout": 600,
        "slow_cutoff": 0
      },
      "workload": [
        {
          "name": "large-file",
          "kind": "large-file",
          "bytes": 4294967296,
          "files": 1
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "metadata cache (dentries/inodes) is not evicted: generation, checksum, and repeats all warm it",
        "rclone-sftp: rclone sftp; harness verification checks regular-file contents, not metadata",
        "rclone-sftp: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "remote end: fixture pages evicted on the client only",
        "The WebDAV listener remained active during the other protocol settings; server and background CPU were not isolated."
      ],
      "host": {
        "kernel": "6.12.107+deb13-cloud-amd64",
        "machine": "x86_64",
        "cpus": 4,
        "python": "3.13.5"
      },
      "filesystems": {
        "source": "tmpfs",
        "destination": "ext2/ext3"
      },
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "fec3d5cf41e1f862c406e3a3e60cd99653b32c991cda392742343b1fa4bc8879",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "network": {
        "rtt_avg_ms": 107.781
      }
    },
    {
      "scenario": "cloud-rclone-large",
      "tool": "rclone-sftp",
      "repeat": 1,
      "bytes": 4294967296,
      "files": 1,
      "wall_s": 235.61347925099972,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--sftp-host",
        "SERVER",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--create-empty-src-dirs",
        "--no-check-dest",
        "--contimeout",
        "10s",
        "--timeout",
        "60s",
        "--retries",
        "1",
        "--sftp-host",
        "SERVER",
        "--sftp-user",
        "USER",
        "--sftp-key-file",
        "KEY_FILE",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--sftp-md5sum-command",
        "md5sum",
        "--sftp-sha1sum-command",
        "sha1sum",
        "--transfers",
        "32",
        "--sftp-chunk-size",
        "255Ki",
        "--sftp-concurrency",
        "256",
        "--",
        ":local:SOURCE",
        ":sftp:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 1
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "order": [
          [
            "rclone-sftp",
            "syq-052",
            "syq"
          ],
          [
            "syq",
            "syq-052",
            "rclone-sftp"
          ],
          [
            "rclone-sftp"
          ]
        ],
        "seed": 9911,
        "cache": "warm",
        "durable": false,
        "verify": true,
        "probes": false,
        "tool_timeout": 600,
        "slow_cutoff": 0
      },
      "workload": [
        {
          "name": "large-file",
          "kind": "large-file",
          "bytes": 4294967296,
          "files": 1
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "metadata cache (dentries/inodes) is not evicted: generation, checksum, and repeats all warm it",
        "rclone-sftp: rclone sftp; harness verification checks regular-file contents, not metadata",
        "rclone-sftp: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "remote end: fixture pages evicted on the client only",
        "The WebDAV listener remained active during the other protocol settings; server and background CPU were not isolated."
      ],
      "host": {
        "kernel": "6.12.107+deb13-cloud-amd64",
        "machine": "x86_64",
        "cpus": 4,
        "python": "3.13.5"
      },
      "filesystems": {
        "source": "tmpfs",
        "destination": "ext2/ext3"
      },
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "fec3d5cf41e1f862c406e3a3e60cd99653b32c991cda392742343b1fa4bc8879",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "network": {
        "rtt_avg_ms": 107.781
      }
    },
    {
      "scenario": "cloud-rclone-large",
      "tool": "rclone-sftp",
      "repeat": 2,
      "bytes": 4294967296,
      "files": 1,
      "wall_s": 234.55072081700018,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--sftp-host",
        "SERVER",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--create-empty-src-dirs",
        "--no-check-dest",
        "--contimeout",
        "10s",
        "--timeout",
        "60s",
        "--retries",
        "1",
        "--sftp-host",
        "SERVER",
        "--sftp-user",
        "USER",
        "--sftp-key-file",
        "KEY_FILE",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--sftp-md5sum-command",
        "md5sum",
        "--sftp-sha1sum-command",
        "sha1sum",
        "--transfers",
        "32",
        "--sftp-chunk-size",
        "255Ki",
        "--sftp-concurrency",
        "256",
        "--",
        ":local:SOURCE",
        ":sftp:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 1
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "order": [
          [
            "rclone-sftp",
            "syq-052",
            "syq"
          ],
          [
            "syq",
            "syq-052",
            "rclone-sftp"
          ],
          [
            "rclone-sftp"
          ]
        ],
        "seed": 9911,
        "cache": "warm",
        "durable": false,
        "verify": true,
        "probes": false,
        "tool_timeout": 600,
        "slow_cutoff": 0
      },
      "workload": [
        {
          "name": "large-file",
          "kind": "large-file",
          "bytes": 4294967296,
          "files": 1
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "metadata cache (dentries/inodes) is not evicted: generation, checksum, and repeats all warm it",
        "rclone-sftp: rclone sftp; harness verification checks regular-file contents, not metadata",
        "rclone-sftp: SFTP uses rclone's internal SSH library; scratch mapping must pass a check before copying; permissions/ownership preservation is unsupported",
        "remote end: fixture pages evicted on the client only",
        "The WebDAV listener remained active during the other protocol settings; server and background CPU were not isolated."
      ],
      "host": {
        "kernel": "6.12.107+deb13-cloud-amd64",
        "machine": "x86_64",
        "cpus": 4,
        "python": "3.13.5"
      },
      "filesystems": {
        "source": "tmpfs",
        "destination": "ext2/ext3"
      },
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "fec3d5cf41e1f862c406e3a3e60cd99653b32c991cda392742343b1fa4bc8879",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "network": {
        "rtt_avg_ms": 107.781
      }
    },
    {
      "scenario": "wan-repeat-many32g",
      "tool": "syq",
      "repeat": 0,
      "bytes": 34359738368,
      "files": 32,
      "wall_s": 338.7509409878403,
      "argv": [
        "env",
        "SYQ_DEBUG=1",
        "syq",
        "rsync",
        "-rt",
        "--no-progress",
        "--syq-no-bootstrap",
        "--rsync-path",
        "REMOTE_RESOURCE_HELPER",
        "-e",
        "SSH_WRAPPER",
        "SOURCE/",
        "USER@SERVER:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 32
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 32,
          "bytes": 34359738368
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        0.29052734375,
        0.52099609375,
        0.4443359375
      ],
      "tool_identity": {
        "version": "syq 0.6.0",
        "sha256": "4fc2f442d88f83d05bf61a0b4eead718b681678b7c7ad6a52696c16d3f479a24"
      },
      "capture_sha256": "679376b5f4c260372142645bbdc9ab70f71acd4329e6526375721ba34a0e3f4a",
      "runner_sha256": "90adf908dd59b6a608f27b14f5fdac3300dadf6b583825245f7edfc349af7ec3",
      "source_manifest_sha256": "8d21fd63c31e61ff335c21c3009c6812f111eac5218ac0258cb81ab01a040d83",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "worker_tuning_log": [
        "syq: tune: candidate 1 -> 2 workers (measured 116.2 MB/s at 1, state Explore { from: 1, base: 116152779.00237696, direction: Up })",
        "syq: tune: 1 -> 2 workers (candidate ready, state Explore { from: 1, base: 116152779.00237696, direction: Up })",
        "syq: tune: candidate 2 -> 1 workers (measured 116.6 MB/s at 2, state Hold)",
        "syq: tune: 2 -> 1 workers (state Hold)",
        "syq: tune: candidate 1 -> 2 workers (measured 115.7 MB/s at 1, state Explore { from: 1, base: 115728948.29298367, direction: Up })",
        "syq: tune: 1 -> 2 workers (candidate ready, state Explore { from: 1, base: 115728948.29298367, direction: Up })",
        "syq: tune: candidate 2 -> 1 workers (measured 116.6 MB/s at 2, state Hold)",
        "syq: tune: 2 -> 1 workers (state Hold)"
      ],
      "tuning_cache": "existing; not reset between runs",
      "payload_started_by_s": 6.24,
      "payload_startup_evidence": "planning log"
    },
    {
      "scenario": "wan-repeat-many32g",
      "tool": "rclone-sftp",
      "repeat": 0,
      "bytes": 34359738368,
      "files": 32,
      "wall_s": 387.95703223720193,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--retries",
        "1",
        "--stats",
        "10s",
        "--stats-one-line",
        "-vv",
        "--sftp-host",
        "SERVER",
        "--sftp-port",
        "PORT",
        "--sftp-user",
        "USER",
        "--sftp-key-use-agent",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--sftp-md5sum-command",
        "md5sum",
        "--sftp-sha1sum-command",
        "sha1sum",
        "--sftp-chunk-size",
        "255Ki",
        "--sftp-concurrency",
        "256",
        "--no-check-dest",
        "--sftp-key-use-agent=false",
        "--sftp-key-file",
        "KEY_FILE",
        "--transfers",
        "32",
        ":local:SOURCE",
        ":sftp:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 32
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 32,
          "bytes": 34359738368
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        0.13427734375,
        0.3837890625,
        0.4189453125
      ],
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "0c1d6440a27f416b0fd73de58b0d96f6bcad05143213e9736611fa7225544fe9",
      "runner_sha256": "90adf908dd59b6a608f27b14f5fdac3300dadf6b583825245f7edfc349af7ec3",
      "source_manifest_sha256": "8d21fd63c31e61ff335c21c3009c6812f111eac5218ac0258cb81ab01a040d83",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "payload_started_by_s": 14.664083480834961,
      "payload_startup_evidence": "first nonzero progress timestamp plus one second"
    },
    {
      "scenario": "wan-repeat-many32g",
      "tool": "rclone-webdav",
      "repeat": 0,
      "bytes": 34359738368,
      "files": 32,
      "wall_s": 311.69940448366106,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--retries",
        "1",
        "--stats",
        "10s",
        "--stats-one-line",
        "-vv",
        "--webdav-url",
        "https://SERVER:PORT/",
        "--webdav-vendor",
        "rclone",
        "--ca-cert",
        "CA_CERT",
        "--transfers",
        "16",
        "--webdav-pacer-min-sleep",
        "2ms",
        "--no-check-dest",
        ":local:SOURCE",
        ":webdav:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 32
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 32,
          "bytes": 34359738368
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        0.89501953125,
        0.73583984375,
        0.55859375
      ],
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "4f452217dd4de39fd3aa6079c77a22ea2c731f413bb9452cbdf6ddc290144bf5",
      "runner_sha256": "90adf908dd59b6a608f27b14f5fdac3300dadf6b583825245f7edfc349af7ec3",
      "source_manifest_sha256": "8d21fd63c31e61ff335c21c3009c6812f111eac5218ac0258cb81ab01a040d83",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "payload_started_by_s": 11.644653081893921,
      "payload_startup_evidence": "first nonzero progress timestamp plus one second"
    },
    {
      "scenario": "wan-repeat-many32g",
      "tool": "syq",
      "repeat": 1,
      "bytes": 34359738368,
      "files": 32,
      "wall_s": 342.15147986635566,
      "argv": [
        "env",
        "SYQ_DEBUG=1",
        "syq",
        "rsync",
        "-rt",
        "--no-progress",
        "--syq-no-bootstrap",
        "--rsync-path",
        "REMOTE_RESOURCE_HELPER",
        "-e",
        "SSH_WRAPPER",
        "SOURCE/",
        "USER@SERVER:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 32
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 32,
          "bytes": 34359738368
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        3.84765625,
        3.88720703125,
        2.9384765625
      ],
      "tool_identity": {
        "version": "syq 0.6.0",
        "sha256": "4fc2f442d88f83d05bf61a0b4eead718b681678b7c7ad6a52696c16d3f479a24"
      },
      "capture_sha256": "c124152b9ef06767d2f8461e5c5bd3c2705ff655c8554043de97d53e588cbc41",
      "runner_sha256": "90adf908dd59b6a608f27b14f5fdac3300dadf6b583825245f7edfc349af7ec3",
      "source_manifest_sha256": "8d21fd63c31e61ff335c21c3009c6812f111eac5218ac0258cb81ab01a040d83",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "worker_tuning_log": [
        "syq: tune: candidate 1 -> 2 workers (measured 116.1 MB/s at 1, state Explore { from: 1, base: 116145560.93521583, direction: Up })",
        "syq: tune: 1 -> 2 workers (candidate ready, state Explore { from: 1, base: 116145560.93521583, direction: Up })",
        "syq: tune: candidate 2 -> 1 workers (measured 116.1 MB/s at 2, state Hold)",
        "syq: tune: 2 -> 1 workers (state Hold)"
      ],
      "tuning_cache": "existing; not reset between runs",
      "payload_started_by_s": 6.0,
      "payload_startup_evidence": "planning log"
    },
    {
      "scenario": "wan-repeat-many32g",
      "tool": "rclone-sftp",
      "repeat": 1,
      "bytes": 34359738368,
      "files": 32,
      "wall_s": 392.4044215325266,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--retries",
        "1",
        "--stats",
        "10s",
        "--stats-one-line",
        "-vv",
        "--sftp-host",
        "SERVER",
        "--sftp-port",
        "PORT",
        "--sftp-user",
        "USER",
        "--sftp-key-use-agent",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--sftp-md5sum-command",
        "md5sum",
        "--sftp-sha1sum-command",
        "sha1sum",
        "--sftp-chunk-size",
        "255Ki",
        "--sftp-concurrency",
        "256",
        "--no-check-dest",
        "--sftp-key-use-agent=false",
        "--sftp-key-file",
        "KEY_FILE",
        "--transfers",
        "32",
        ":local:SOURCE",
        ":sftp:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 32
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 32,
          "bytes": 34359738368
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        2.4638671875,
        2.32958984375,
        1.40234375
      ],
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "2c99326b71a2e8bd0648c5c0ea96694f50aec166fea306b50262b2ea3c9094ac",
      "runner_sha256": "90adf908dd59b6a608f27b14f5fdac3300dadf6b583825245f7edfc349af7ec3",
      "source_manifest_sha256": "8d21fd63c31e61ff335c21c3009c6812f111eac5218ac0258cb81ab01a040d83",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "payload_started_by_s": 14.014498472213745,
      "payload_startup_evidence": "first nonzero progress timestamp plus one second"
    },
    {
      "scenario": "wan-repeat-many32g",
      "tool": "rclone-webdav",
      "repeat": 1,
      "bytes": 34359738368,
      "files": 32,
      "wall_s": 309.09572109021246,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--retries",
        "1",
        "--stats",
        "10s",
        "--stats-one-line",
        "-vv",
        "--webdav-url",
        "https://SERVER:PORT/",
        "--webdav-vendor",
        "rclone",
        "--ca-cert",
        "CA_CERT",
        "--transfers",
        "16",
        "--webdav-pacer-min-sleep",
        "2ms",
        "--no-check-dest",
        ":local:SOURCE",
        ":webdav:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 32
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 32,
          "bytes": 34359738368
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        4.24365234375,
        3.9833984375,
        2.5146484375
      ],
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "663ec1d98ada48edd92354b2fcee6ea93e660731f2c68b2716031788672d504b",
      "runner_sha256": "90adf908dd59b6a608f27b14f5fdac3300dadf6b583825245f7edfc349af7ec3",
      "source_manifest_sha256": "8d21fd63c31e61ff335c21c3009c6812f111eac5218ac0258cb81ab01a040d83",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "payload_started_by_s": 11.305055856704712,
      "payload_startup_evidence": "first nonzero progress timestamp plus one second"
    },
    {
      "scenario": "wan-repeat-many32g",
      "tool": "syq",
      "repeat": 2,
      "bytes": 34359738368,
      "files": 32,
      "wall_s": 326.39911484345794,
      "argv": [
        "env",
        "SYQ_DEBUG=1",
        "syq",
        "rsync",
        "-rt",
        "--no-progress",
        "--syq-no-bootstrap",
        "--rsync-path",
        "REMOTE_RESOURCE_HELPER",
        "-e",
        "SSH_WRAPPER",
        "SOURCE/",
        "USER@SERVER:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 32
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 32,
          "bytes": 34359738368
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        2.37060546875,
        2.86962890625,
        2.87109375
      ],
      "tool_identity": {
        "version": "syq 0.6.0",
        "sha256": "4fc2f442d88f83d05bf61a0b4eead718b681678b7c7ad6a52696c16d3f479a24"
      },
      "capture_sha256": "7c84da633c4cfca93284220e7b8a6916652a3fca7871a288af23c8ef85077457",
      "runner_sha256": "90adf908dd59b6a608f27b14f5fdac3300dadf6b583825245f7edfc349af7ec3",
      "source_manifest_sha256": "8d21fd63c31e61ff335c21c3009c6812f111eac5218ac0258cb81ab01a040d83",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "worker_tuning_log": [
        "syq: tune: candidate 1 -> 2 workers (measured 116.1 MB/s at 1, state Explore { from: 1, base: 116147049.26987419, direction: Up })",
        "syq: tune: 1 -> 2 workers (candidate ready, state Explore { from: 1, base: 116147049.26987419, direction: Up })",
        "syq: tune: candidate 2 -> 1 workers (measured 114.0 MB/s at 2, state Hold)",
        "syq: tune: 2 -> 1 workers (state Hold)",
        "syq: tune: candidate 1 -> 2 workers (measured 86.5 MB/s at 1, state Explore { from: 1, base: 86482011.16515699, direction: Up })",
        "syq: tune: 1 -> 2 workers (candidate ready, state Explore { from: 1, base: 86482011.16515699, direction: Up })",
        "syq: tune: candidate 2 -> 3 workers (measured 114.5 MB/s at 2, state Explore { from: 2, base: 114474932.32595636, direction: Up })",
        "syq: tune: 2 -> 3 workers (candidate ready, state Explore { from: 2, base: 114474932.32595636, direction: Up })",
        "syq: tune: candidate 3 -> 2 workers (measured 115.0 MB/s at 3, state Hold)",
        "syq: tune: 3 -> 2 workers (state Hold)",
        "syq: tune: candidate 2 -> 1 workers (measured 111.2 MB/s at 2, state Explore { from: 2, base: 111221825.12472571, direction: Down })",
        "syq: tune: 2 -> 1 workers (state Explore { from: 2, base: 111221825.12472571, direction: Down })"
      ],
      "tuning_cache": "existing; not reset between runs",
      "payload_started_by_s": 6.02,
      "payload_startup_evidence": "planning log"
    },
    {
      "scenario": "wan-repeat-many32g",
      "tool": "rclone-sftp",
      "repeat": 2,
      "bytes": 34359738368,
      "files": 32,
      "wall_s": 385.0401226375252,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--retries",
        "1",
        "--stats",
        "10s",
        "--stats-one-line",
        "-vv",
        "--sftp-host",
        "SERVER",
        "--sftp-port",
        "PORT",
        "--sftp-user",
        "USER",
        "--sftp-key-use-agent",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--sftp-md5sum-command",
        "md5sum",
        "--sftp-sha1sum-command",
        "sha1sum",
        "--sftp-chunk-size",
        "255Ki",
        "--sftp-concurrency",
        "256",
        "--no-check-dest",
        "--sftp-key-use-agent=false",
        "--sftp-key-file",
        "KEY_FILE",
        "--transfers",
        "32",
        ":local:SOURCE",
        ":sftp:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 32
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 32,
          "bytes": 34359738368
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        1.57861328125,
        1.94873046875,
        2.34375
      ],
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "3b983f4aa6c08d06ca78b124c93edb2ed5d5fef647c55a84db0cc49dcd59521e",
      "runner_sha256": "715fdeaae36392e7d7ac37721b9aa816f2a7ae81905f0f929be8a2673e61168d",
      "source_manifest_sha256": "8d21fd63c31e61ff335c21c3009c6812f111eac5218ac0258cb81ab01a040d83",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "payload_started_by_s": 14.088998556137085,
      "payload_startup_evidence": "first nonzero progress timestamp plus one second"
    },
    {
      "scenario": "wan-repeat-many32g",
      "tool": "rclone-webdav",
      "repeat": 2,
      "bytes": 34359738368,
      "files": 32,
      "wall_s": 311.349342148751,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--retries",
        "1",
        "--stats",
        "10s",
        "--stats-one-line",
        "-vv",
        "--webdav-url",
        "https://SERVER:PORT/",
        "--webdav-vendor",
        "rclone",
        "--ca-cert",
        "CA_CERT",
        "--transfers",
        "16",
        "--webdav-pacer-min-sleep",
        "2ms",
        "--no-check-dest",
        ":local:SOURCE",
        ":webdav:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 32
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 32,
          "bytes": 34359738368
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        1.95556640625,
        2.85107421875,
        2.8203125
      ],
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "98634f553c9feb35376fb9ad5a3d7744c0b7a78da9fdba2cac21204a5ac6d70e",
      "runner_sha256": "90adf908dd59b6a608f27b14f5fdac3300dadf6b583825245f7edfc349af7ec3",
      "source_manifest_sha256": "8d21fd63c31e61ff335c21c3009c6812f111eac5218ac0258cb81ab01a040d83",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "payload_started_by_s": 11.179059743881226,
      "payload_startup_evidence": "first nonzero progress timestamp plus one second"
    },
    {
      "scenario": "wan-repeat-one8g",
      "tool": "syq",
      "repeat": 0,
      "bytes": 8589934592,
      "files": 1,
      "wall_s": 86.57366842776537,
      "argv": [
        "env",
        "SYQ_DEBUG=1",
        "syq",
        "rsync",
        "-rt",
        "--no-progress",
        "--syq-no-bootstrap",
        "--rsync-path",
        "REMOTE_RESOURCE_HELPER",
        "-e",
        "SSH_WRAPPER",
        "SOURCE/",
        "USER@SERVER:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 1
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 1,
          "bytes": 8589934592
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        5.22412109375,
        3.4541015625,
        2.77587890625
      ],
      "tool_identity": {
        "version": "syq 0.6.0",
        "sha256": "4fc2f442d88f83d05bf61a0b4eead718b681678b7c7ad6a52696c16d3f479a24"
      },
      "capture_sha256": "7f4dcbf525ddd14682bf0bcaf7ad45705db25e3958fa1ae3c7ffba980363d40e",
      "runner_sha256": "715fdeaae36392e7d7ac37721b9aa816f2a7ae81905f0f929be8a2673e61168d",
      "source_manifest_sha256": "efb1c5c66be4ce95bf6de0c7b5e02151f7ef4f472c0318411920c47f5b6cfb01",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "worker_tuning_log": [
        "syq: tune: candidate 2 -> 3 workers (measured 120.8 MB/s at 2, state Explore { from: 2, base: 120758206.04289594, direction: Up })",
        "syq: tune: 2 -> 3 workers (candidate ready, state Explore { from: 2, base: 120758206.04289594, direction: Up })",
        "syq: tune: candidate 3 -> 2 workers (measured 118.2 MB/s at 3, state Hold)",
        "syq: tune: 3 -> 2 workers (state Hold)",
        "syq: tune: candidate 2 -> 1 workers (measured 116.1 MB/s at 2, state Explore { from: 2, base: 116146647.62827909, direction: Down })",
        "syq: tune: 2 -> 1 workers (state Explore { from: 2, base: 116146647.62827909, direction: Down })"
      ],
      "tuning_cache": "existing; not reset between runs",
      "payload_started_by_s": 5.66,
      "payload_startup_evidence": "planning log"
    },
    {
      "scenario": "wan-repeat-one8g",
      "tool": "rclone-webdav",
      "repeat": 0,
      "bytes": 8589934592,
      "files": 1,
      "wall_s": 81.97476843185723,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--retries",
        "1",
        "--stats",
        "10s",
        "--stats-one-line",
        "-vv",
        "--webdav-url",
        "https://SERVER:PORT/",
        "--webdav-vendor",
        "rclone",
        "--ca-cert",
        "CA_CERT",
        "--transfers",
        "16",
        "--webdav-pacer-min-sleep",
        "2ms",
        "--no-check-dest",
        ":local:SOURCE",
        ":webdav:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 1
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 1,
          "bytes": 8589934592
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        2.1982421875,
        2.7802734375,
        2.64013671875
      ],
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "9bf74db3a48850a5dcd2f15f0dc9a1ba5e84f0f786320d2e36c6c112a4eee65a",
      "runner_sha256": "715fdeaae36392e7d7ac37721b9aa816f2a7ae81905f0f929be8a2673e61168d",
      "source_manifest_sha256": "efb1c5c66be4ce95bf6de0c7b5e02151f7ef4f472c0318411920c47f5b6cfb01",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "payload_started_by_s": 11.3162362575531,
      "payload_startup_evidence": "first nonzero progress timestamp plus one second"
    },
    {
      "scenario": "wan-repeat-one8g",
      "tool": "syq",
      "repeat": 1,
      "bytes": 8589934592,
      "files": 1,
      "wall_s": 86.47382276877761,
      "argv": [
        "env",
        "SYQ_DEBUG=1",
        "syq",
        "rsync",
        "-rt",
        "--no-progress",
        "--syq-no-bootstrap",
        "--rsync-path",
        "REMOTE_RESOURCE_HELPER",
        "-e",
        "SSH_WRAPPER",
        "SOURCE/",
        "USER@SERVER:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 1
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 1,
          "bytes": 8589934592
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        2.45849609375,
        2.75830078125,
        2.66552734375
      ],
      "tool_identity": {
        "version": "syq 0.6.0",
        "sha256": "4fc2f442d88f83d05bf61a0b4eead718b681678b7c7ad6a52696c16d3f479a24"
      },
      "capture_sha256": "99d761736c4c1054e0d5cf2b5d53f43f3f7aa3938fe480e67f6438c38c1b5970",
      "runner_sha256": "715fdeaae36392e7d7ac37721b9aa816f2a7ae81905f0f929be8a2673e61168d",
      "source_manifest_sha256": "efb1c5c66be4ce95bf6de0c7b5e02151f7ef4f472c0318411920c47f5b6cfb01",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "worker_tuning_log": [
        "syq: tune: candidate 1 -> 2 workers (measured 116.1 MB/s at 1, state Explore { from: 1, base: 116147795.10142925, direction: Up })",
        "syq: tune: 1 -> 2 workers (candidate ready, state Explore { from: 1, base: 116147795.10142925, direction: Up })",
        "syq: tune: candidate 2 -> 1 workers (measured 116.6 MB/s at 2, state Hold)",
        "syq: tune: 2 -> 1 workers (state Hold)"
      ],
      "tuning_cache": "existing; not reset between runs",
      "payload_started_by_s": 5.41,
      "payload_startup_evidence": "planning log"
    },
    {
      "scenario": "wan-repeat-one8g",
      "tool": "rclone-webdav",
      "repeat": 1,
      "bytes": 8589934592,
      "files": 1,
      "wall_s": 81.97477538511157,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--retries",
        "1",
        "--stats",
        "10s",
        "--stats-one-line",
        "-vv",
        "--webdav-url",
        "https://SERVER:PORT/",
        "--webdav-vendor",
        "rclone",
        "--ca-cert",
        "CA_CERT",
        "--transfers",
        "16",
        "--webdav-pacer-min-sleep",
        "2ms",
        "--no-check-dest",
        ":local:SOURCE",
        ":webdav:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 1
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 1,
          "bytes": 8589934592
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        2.59033203125,
        2.80419921875,
        2.6640625
      ],
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "41974600876df36e3f0e4953cb0f72d23ddb0c29bd8e231eca1522c9313ef89c",
      "runner_sha256": "715fdeaae36392e7d7ac37721b9aa816f2a7ae81905f0f929be8a2673e61168d",
      "source_manifest_sha256": "efb1c5c66be4ce95bf6de0c7b5e02151f7ef4f472c0318411920c47f5b6cfb01",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "payload_started_by_s": 10.927263021469116,
      "payload_startup_evidence": "first nonzero progress timestamp plus one second"
    },
    {
      "scenario": "wan-repeat-one8g",
      "tool": "syq",
      "repeat": 2,
      "bytes": 8589934592,
      "files": 1,
      "wall_s": 87.62406866811216,
      "argv": [
        "env",
        "SYQ_DEBUG=1",
        "syq",
        "rsync",
        "-rt",
        "--no-progress",
        "--syq-no-bootstrap",
        "--rsync-path",
        "REMOTE_RESOURCE_HELPER",
        "-e",
        "SSH_WRAPPER",
        "SOURCE/",
        "USER@SERVER:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 1
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 1,
          "bytes": 8589934592
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        16.7265625,
        7.51708984375,
        4.36376953125
      ],
      "tool_identity": {
        "version": "syq 0.6.0",
        "sha256": "4fc2f442d88f83d05bf61a0b4eead718b681678b7c7ad6a52696c16d3f479a24"
      },
      "capture_sha256": "6a995318efa535a0e4d46465b815153d0a3fca7c465fab74f167ab6538f6b3a4",
      "runner_sha256": "715fdeaae36392e7d7ac37721b9aa816f2a7ae81905f0f929be8a2673e61168d",
      "source_manifest_sha256": "efb1c5c66be4ce95bf6de0c7b5e02151f7ef4f472c0318411920c47f5b6cfb01",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "worker_tuning_log": [
        "syq: tune: candidate 1 -> 2 workers (measured 115.7 MB/s at 1, state Explore { from: 1, base: 115736105.5890817, direction: Up })",
        "syq: tune: 1 -> 2 workers (candidate ready, state Explore { from: 1, base: 115736105.5890817, direction: Up })",
        "syq: tune: candidate 2 -> 1 workers (measured 116.6 MB/s at 2, state Hold)",
        "syq: tune: 2 -> 1 workers (state Hold)"
      ],
      "tuning_cache": "existing; not reset between runs",
      "payload_started_by_s": 5.66,
      "payload_startup_evidence": "planning log"
    },
    {
      "scenario": "wan-repeat-one8g",
      "tool": "rclone-webdav",
      "repeat": 2,
      "bytes": 8589934592,
      "files": 1,
      "wall_s": 81.5741472505033,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--retries",
        "1",
        "--stats",
        "10s",
        "--stats-one-line",
        "-vv",
        "--webdav-url",
        "https://SERVER:PORT/",
        "--webdav-vendor",
        "rclone",
        "--ca-cert",
        "CA_CERT",
        "--transfers",
        "16",
        "--webdav-pacer-min-sleep",
        "2ms",
        "--no-check-dest",
        ":local:SOURCE",
        ":webdav:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds",
        "mismatches": 0,
        "entries": 1
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "warm tmpfs source; no eviction",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "flat regular files",
          "files": 1,
          "bytes": 8589934592
        }
      ],
      "cache": "warm",
      "case_error": false,
      "cache_limitations": [
        "Memory-resident source; destination and server metadata caches uncontrolled; no final fsync.",
        "The WebDAV server remained active across settings. Substantial idle CPU was observed after the WAN series; its time-varying contribution during copies was not isolated."
      ],
      "filesystems": {
        "source": "tmpfs",
        "destination": "XFS RAID"
      },
      "network": {
        "sender_nic_mbps": 1000,
        "sender_congestion_control": "bbr",
        "rtt_avg_ms": 262.299
      },
      "receiver_load_before": [
        7.6513671875,
        8.03271484375,
        4.966796875
      ],
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "f0ec6e2411b5340c52574ad4892afce58fa4470b1b85d428d089c8ab0fae25c7",
      "runner_sha256": "715fdeaae36392e7d7ac37721b9aa816f2a7ae81905f0f929be8a2673e61168d",
      "source_manifest_sha256": "efb1c5c66be4ce95bf6de0c7b5e02151f7ef4f472c0318411920c47f5b6cfb01",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef",
      "payload_started_by_s": 11.541155338287354,
      "payload_startup_evidence": "first nonzero progress timestamp plus one second"
    },
    {
      "scenario": "lan-repeat-small",
      "tool": "syq",
      "repeat": 0,
      "bytes": 2457600000,
      "files": 600000,
      "wall_s": 24.31721754744649,
      "argv": [
        "syq",
        "rsync",
        "-rt",
        "--no-progress",
        "--syq-no-bootstrap",
        "--rsync-path",
        "REMOTE_RESOURCE_HELPER",
        "-e",
        "SSH_WRAPPER",
        "SOURCE/",
        "USER@SERVER:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds; file and directory membership",
        "mismatches": 0,
        "entries": 600000
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "source files read before every timed copy",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "small regular files in 256 directories",
          "files": 600000,
          "bytes": 2457600000
        }
      ],
      "cache": "warm source data and metadata",
      "case_error": false,
      "cache_limitations": [
        "Fresh destination; shared server activity and destination caches uncontrolled; no final fsync.",
        "The WebDAV listener remained active across settings; server/background costs were captured separately."
      ],
      "filesystems": {
        "source": "XFS RAID",
        "destination": "XFS RAID"
      },
      "receiver_load_before": [
        3.68017578125,
        9.052734375,
        8.66796875
      ],
      "tool_identity": {
        "version": "syq 0.6.0",
        "sha256": "4fc2f442d88f83d05bf61a0b4eead718b681678b7c7ad6a52696c16d3f479a24"
      },
      "capture_sha256": "62033ca5f763687981965d6af1fdfc59df516b62053f90bec97842e1a0a99a73",
      "runner_sha256": "5a325cf0daacd503d4f0faceeaafc636b4ce110a0e54afeccef043dc6ab42bd7",
      "verifier_sha256": "4408cbb0a342e39ada31992b0e0e9cc5070e57b30df93ed8719afbcff7af3131",
      "source_manifest_sha256": "65bcf13e98b219ccc14f23f11fc663725faa8cca8bcf57753c99615988f40786",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef"
    },
    {
      "scenario": "lan-repeat-small",
      "tool": "rclone-sftp",
      "repeat": 0,
      "bytes": 2457600000,
      "files": 600000,
      "wall_s": 101.37729541771114,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--timeout",
        "60s",
        "--retries",
        "1",
        "--stats",
        "5s",
        "--stats-one-line",
        "--stats-log-level",
        "NOTICE",
        "--no-check-dest",
        "--sftp-host",
        "SERVER",
        "--sftp-port",
        "PORT",
        "--sftp-user",
        "USER",
        "--sftp-key-file",
        "KEY_FILE",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--sftp-md5sum-command",
        "md5sum",
        "--sftp-sha1sum-command",
        "sha1sum",
        "--transfers",
        "64",
        ":local:SOURCE",
        ":sftp:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds; file and directory membership",
        "mismatches": 0,
        "entries": 600000
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "source files read before every timed copy",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "small regular files in 256 directories",
          "files": 600000,
          "bytes": 2457600000
        }
      ],
      "cache": "warm source data and metadata",
      "case_error": false,
      "cache_limitations": [
        "Fresh destination; shared server activity and destination caches uncontrolled; no final fsync.",
        "The WebDAV listener remained active across settings; server/background costs were captured separately."
      ],
      "filesystems": {
        "source": "XFS RAID",
        "destination": "XFS RAID"
      },
      "receiver_load_before": [
        5.06103515625,
        7.92626953125,
        8.32177734375
      ],
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "b97330c0d7c20f6abf27af599b3f355f319ac01cec18cecc479dcd12feb90c04",
      "runner_sha256": "5a325cf0daacd503d4f0faceeaafc636b4ce110a0e54afeccef043dc6ab42bd7",
      "verifier_sha256": "4408cbb0a342e39ada31992b0e0e9cc5070e57b30df93ed8719afbcff7af3131",
      "source_manifest_sha256": "65bcf13e98b219ccc14f23f11fc663725faa8cca8bcf57753c99615988f40786",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef"
    },
    {
      "scenario": "lan-repeat-small",
      "tool": "rclone-webdav",
      "repeat": 0,
      "bytes": 2457600000,
      "files": 600000,
      "wall_s": 45.16989533789456,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--timeout",
        "60s",
        "--retries",
        "1",
        "--stats",
        "5s",
        "--stats-one-line",
        "--stats-log-level",
        "NOTICE",
        "--no-check-dest",
        "--webdav-url",
        "https://SERVER:PORT/",
        "--webdav-vendor",
        "rclone",
        "--ca-cert",
        "CA_CERT",
        "--transfers",
        "64",
        "--webdav-pacer-min-sleep",
        "0s",
        ":local:SOURCE",
        ":webdav:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds; file and directory membership",
        "mismatches": 0,
        "entries": 600000
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "source files read before every timed copy",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "small regular files in 256 directories",
          "files": 600000,
          "bytes": 2457600000
        }
      ],
      "cache": "warm source data and metadata",
      "case_error": false,
      "cache_limitations": [
        "Fresh destination; shared server activity and destination caches uncontrolled; no final fsync.",
        "The WebDAV listener remained active across settings; server/background costs were captured separately."
      ],
      "filesystems": {
        "source": "XFS RAID",
        "destination": "XFS RAID"
      },
      "receiver_load_before": [
        20.15234375,
        17.24658203125,
        12.02294921875
      ],
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
      },
      "capture_sha256": "6efb4871a80e1c32e16829bfc0a80890d360fe33659afea439d8654609e5f289",
      "runner_sha256": "5a325cf0daacd503d4f0faceeaafc636b4ce110a0e54afeccef043dc6ab42bd7",
      "verifier_sha256": "4408cbb0a342e39ada31992b0e0e9cc5070e57b30df93ed8719afbcff7af3131",
      "source_manifest_sha256": "65bcf13e98b219ccc14f23f11fc663725faa8cca8bcf57753c99615988f40786",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef"
    },
    {
      "scenario": "lan-repeat-small",
      "tool": "syq",
      "repeat": 1,
      "bytes": 2457600000,
      "files": 600000,
      "wall_s": 24.467313159257174,
      "argv": [
        "syq",
        "rsync",
        "-rt",
        "--no-progress",
        "--syq-no-bootstrap",
        "--rsync-path",
        "REMOTE_RESOURCE_HELPER",
        "-e",
        "SSH_WRAPPER",
        "SOURCE/",
        "USER@SERVER:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds; file and directory membership",
        "mismatches": 0,
        "entries": 600000
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "source files read before every timed copy",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "small regular files in 256 directories",
          "files": 600000,
          "bytes": 2457600000
        }
      ],
      "cache": "warm source data and metadata",
      "case_error": false,
      "cache_limitations": [
        "Fresh destination; shared server activity and destination caches uncontrolled; no final fsync.",
        "The WebDAV listener remained active across settings; server/background costs were captured separately."
      ],
      "filesystems": {
        "source": "XFS RAID",
        "destination": "XFS RAID"
      },
      "receiver_load_before": [
        15.27099609375,
        19.58056640625,
        15.12548828125
      ],
      "tool_identity": {
        "version": "syq 0.6.0",
        "sha256": "4fc2f442d88f83d05bf61a0b4eead718b681678b7c7ad6a52696c16d3f479a24"
      },
      "capture_sha256": "c5a6171dfe5bdeea06657996aba82d563478f02d11c3aa73eedd9b07dda72ed3",
      "runner_sha256": "5a325cf0daacd503d4f0faceeaafc636b4ce110a0e54afeccef043dc6ab42bd7",
      "verifier_sha256": "4408cbb0a342e39ada31992b0e0e9cc5070e57b30df93ed8719afbcff7af3131",
      "source_manifest_sha256": "65bcf13e98b219ccc14f23f11fc663725faa8cca8bcf57753c99615988f40786",
      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef"
    },
    {
      "scenario": "lan-repeat-small",
      "tool": "rclone-sftp",
      "repeat": 1,
      "bytes": 2457600000,
      "files": 600000,
      "wall_s": 140.93221531622112,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--create-empty-src-dirs",
        "--contimeout",
        "10s",
        "--timeout",
        "60s",
        "--retries",
        "1",
        "--stats",
        "5s",
        "--stats-one-line",
        "--stats-log-level",
        "NOTICE",
        "--no-check-dest",
        "--sftp-host",
        "SERVER",
        "--sftp-port",
        "PORT",
        "--sftp-user",
        "USER",
        "--sftp-key-file",
        "KEY_FILE",
        "--sftp-known-hosts-file",
        "KNOWN_HOSTS",
        "--sftp-md5sum-command",
        "md5sum",
        "--sftp-sha1sum-command",
        "sha1sum",
        "--transfers",
        "64",
        ":local:SOURCE",
        ":sftp:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular-file sizes and mtimes, whole seconds; file and directory membership",
        "mismatches": 0,
        "entries": 600000
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "source files read before every timed copy",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "small regular files in 256 directories",
          "files": 600000,
          "bytes": 2457600000
        }
      ],
      "cache": "warm source data and metadata",
      "case_error": false,
      "cache_limitations": [
        "Fresh destination; shared server activity and destination caches uncontrolled; no final fsync.",
        "The WebDAV listener remained active across settings; server/background costs were captured separately."
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      "source_manifest_sha256": "d79c4ce3ed842976e3caf21f9241967ae081aa189980173ab7538bd3c7d5beec",
      "capture_sha256": "6f2d6fa462576eb60a4224102a43f15b018b320a25ece7740d852fc84721076c",
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      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef"
    },
    {
      "scenario": "nfs-repeat-small-read",
      "tool": "rclone-t64",
      "repeat": 2,
      "bytes": 1638400000,
      "files": 400000,
      "wall_s": 30.16447566705756,
      "argv": [
        "rclone",
        "copy",
        "--config",
        "/dev/null",
        "--metadata",
        "--create-empty-src-dirs",
        "--transfers",
        "64",
        "--stats",
        "5s",
        "--stats-one-line",
        "--stats-log-level",
        "NOTICE",
        ":local:SOURCE",
        ":local:DESTINATION"
      ],
      "exit_code": 0,
      "content_verified": true,
      "metadata": {
        "scope": "regular files and directories: membership, type, mode, uid, gid, mtime_ns; file contents SHA256; root excluded",
        "mismatches": 0,
        "entries": 400256
      },
      "recorded_status": "verified",
      "seed": 9911,
      "protocol": {
        "repeats": 3,
        "cache": "source file contents and metadata read before every timed copy",
        "durable": false,
        "verify": true,
        "tool_timeout": 900
      },
      "workload": [
        {
          "name": "small regular files in 256 directories",
          "files": 400000,
          "bytes": 1638400000
        }
      ],
      "cache": "warm source data and metadata",
      "case_error": false,
      "cache_limitations": [
        "NFS server caches and other clients uncontrolled; shared host; no final durability flush.",
        "Source generated on another client, then fully read and verified on the measured client before each timed copy."
      ],
      "filesystems": {
        "source": "mounted NFS",
        "destination": "XFS RAID"
      },
      "tool_identity": {
        "version": "rclone v1.75.1",
        "sha256": "f66d8c1d552ad90296a11bc8b46d56a7fa5da1a7fa05e7ca522d95df92c4a4c0"
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      "harness_revision": "b87f3aeff75d05cc56e5f961f7d66518e39998ef"
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  ],
  "setup_attempts": [
    {
      "scenario": "cloud-rclone-large",
      "tool": "rclone-sftp",
      "stage": "endpoint preflight",
      "completed_copy": false,
      "reason": "SSH host-key mismatch before copying. All server key algorithms were obtained over an existing trusted SSH connection; corrected attempts are the three displayed SFTP runs."
    },
    {
      "scenario": "wan-repeat-many32g",
      "tool": "sftp",
      "stage": "SSH connection",
      "completed_copy": false,
      "reason": "SSH host-key mismatch before copying; corrected attempt retained separately."
    }
  ],
  "network_checks": []
}