spill 0.5.2

Modern torrent client
Documentation 
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{
  "source_revision": "9ba5c820e51e421dbc7b10fac271f2f960eacb43",
  "source_dirty": true,
  "controlled_reproduction": {
    "test": "endgame_requests_progress_while_other_duplicates_are_stalled",
    "setup": "A Fast peer holds eight primary tail requests; a second holds four duplicates. Both choke without relinquishing their outstanding requests. A healthy third peer can duplicate the other four blocks without exceeding two copies per block.",
    "before": "With the global cap of four, the healthy peer receives no request within three seconds.",
    "after": "Without the global cap, the healthy peer receives all four requests. A fourth peer receives no third copies, all eight original requests are canceled after fulfillment, and the daemon completes with the correct payload.",
    "fast_choke_grace_added": false
  },
  "notes": [
    "The original exploratory run has no Spill log events, so its retirement reasons cannot be recovered.",
    "Removing the global cap fixes the controlled starvation case but does not eliminate the observed swarm tail.",
    "The instrumented stall has outstanding requests only on unchoked peers. Assigned and authorized counts match, so the sampled requests have no duplicate copies. Fast-choke retention is not supported as the cause of this reproduced stall.",
    "Pending upload queues with grants and no output backpressure suggest further investigation of upload/read scheduling. The remaining cause is unresolved; no grace period or request-timeout change was made.",
    "Timings are measured runs, not performance guarantees. The peer-trace run adds diagnostic serialization and trace I/O."
  ],
  "swarm": {
    "scenario_version": 1,
    "leechers": 8,
    "bytes_per_leecher": 268435456,
    "aggregate_bytes": 2147483648,
    "runs": [
      {
        "artifacts": "target/interop/endgame-per-block-swarm-1/result.json",
        "daemon_sha256": "c7155c775ba24e8d6e344969b130f821b30d24ed7584e2cc1d8a3e349b439c2c",
        "seconds": 10.541,
        "aggregate_mb_per_second": 203.727,
        "peak_leecher_total_rss_mib": 269.711,
        "passed": true
      },
      {
        "artifacts": "target/interop/endgame-per-block-swarm-2/result.json",
        "daemon_sha256": "c7155c775ba24e8d6e344969b130f821b30d24ed7584e2cc1d8a3e349b439c2c",
        "seconds": 39.684,
        "aggregate_mb_per_second": 54.115,
        "peak_leecher_total_rss_mib": 326.883,
        "passed": true
      },
      {
        "artifacts": "target/interop/endgame-peer-trace-1/result.json",
        "peer_trace": "target/interop/endgame-peer-trace-1/peer-samples.jsonl",
        "daemon_sha256": "7a056bae71faaa57dd6b1f244e4e6afbd810d353fad5d41c8cbd879e44f8efb8",
        "runner_sha256": "62f17cf81816c8e9edc760c96e01d9fac2f562854514316044c76141a0b41116",
        "seconds": 39.700,
        "aggregate_mb_per_second": 54.093,
        "peak_leecher_total_rss_mib": 332.410,
        "passed": true,
        "stall_snapshot": {
          "seconds": 15.994,
          "incomplete_leechers": 6,
          "assigned_requests": 1176,
          "authorized_requests": 1176,
          "assigned_to_choked_peers": 0,
          "pending_upload_requests": 1176
        }
      }
    ]
  }
}