{
  "description": "Selected measurements from the September 27 pre-release ARM64 relay experiment; not a benchmark of the published v26.3.2 image digests or a production limit.",
  "sourceCommit": "232e1bb2bd7b6513d6e7744b3e77f83ba684a596",
  "sourceEvidenceSha256": "67eaf8cbfe953096cd989f53afb85d72586b4fbe29f9156cb763b43e5550a583",
  "date": "2026-09-27",
  "host": {
    "architecture": "arm64",
    "environment": "OrbStack Linux VM",
    "visibleCpus": 10,
    "approximateRamGiB": 8,
    "sharedWithOtherContainers": true
  },
  "workload": {
    "routes": 4,
    "outputs_per_route": 12,
    "subscribers": 2,
    "duration_seconds": 3600,
    "sample_seconds": 5,
    "media_cpus": 1,
    "media_memory_mib": 2048,
    "topology": "single-host-containers"
  },
  "fixture": "looping 720p30 H.264/AAC; copy mode; RTMP; approximately 2.646 Mbit/s per output; Docker-local media traffic",
  "images": [
    {
      "dockerImageId": "sha256:958b66edbf3072bef59e5fb2c509b085784f64ca65b98076e1a77d3296db063c",
      "architecture": "arm64"
    },
    {
      "dockerImageId": "sha256:793938ca47a15a9af489b307881cf282ced5ea3d2bf3dfd1041a4bacb2b7d2c7",
      "architecture": "arm64"
    }
  ],
  "mediaResourceMetrics": {
    "sample_count": 720,
    "memory_bytes": {
      "count": 720,
      "p50": 945815552.0,
      "p95": 1046898278.4,
      "p99": 1109175304.192,
      "max": 1113470271.488
    },
    "cpu_percent": {
      "count": 720,
      "p50": 29.22,
      "p95": 57.27,
      "p99": 70.4,
      "max": 81.99
    }
  },
  "latencyMs": {
    "read": {
      "attempts": 720,
      "errors": 0,
      "timeouts": 0,
      "censored": 0,
      "count": 720,
      "p50": 7.654416025616229,
      "p95": 12.300363974645734,
      "p99": 16.575718065723777,
      "max": 21.280536078847945
    },
    "snapshot": {
      "attempts": 720,
      "errors": 0,
      "timeouts": 0,
      "censored": 0,
      "count": 720,
      "p50": 8.244129945524037,
      "p95": 12.756655924022198,
      "p99": 16.013632994145155,
      "max": 20.767324953339994
    },
    "mutation": {
      "attempts": 0,
      "errors": 0,
      "timeouts": 0,
      "censored": 0,
      "count": 0,
      "p50": null,
      "p95": null,
      "p99": null,
      "max": null
    },
    "convergence": {
      "attempts": 0,
      "errors": 0,
      "timeouts": 0,
      "censored": 0,
      "count": 0,
      "p50": null,
      "p95": null,
      "p99": null,
      "max": null
    },
    "hls": {
      "attempts": 720,
      "errors": 0,
      "timeouts": 0,
      "censored": 0,
      "count": 720,
      "p50": 18.830729997716844,
      "p95": 63.16822802182287,
      "p99": 83.81070906762034,
      "max": 174.57110399845988
    }
  },
  "capacityContract": {
    "status": "passed",
    "configured_outputs": 48,
    "progress_deadline_seconds": 10,
    "checks": [
      {
        "name": "all output receivers advance without reconnects",
        "phase": "steady",
        "passed": true,
        "samples": 719,
        "minimum_samples": 5,
        "errors_and_timeouts": 0
      },
      {
        "name": "receiver sampling covers the measurement window",
        "phase": "steady",
        "passed": true,
        "samples": 719,
        "minimum_samples": 5,
        "errors_and_timeouts": 0,
        "max_gap_seconds": 5.600699999999961,
        "gap_limit_seconds": 15
      },
      {
        "name": "read availability and p95 <=250 ms",
        "phase": "steady",
        "passed": true,
        "samples": 720,
        "minimum_samples": 5,
        "errors_and_timeouts": 0
      },
      {
        "name": "snapshot availability and p95 <=250 ms",
        "phase": "steady",
        "passed": true,
        "samples": 720,
        "minimum_samples": 5,
        "errors_and_timeouts": 0
      },
      {
        "name": "hls availability",
        "phase": "steady",
        "passed": true,
        "samples": 720,
        "minimum_samples": 5,
        "errors_and_timeouts": 0
      },
      {
        "name": "resource_errors",
        "phase": "steady",
        "passed": true,
        "samples": 719,
        "minimum_samples": 5,
        "errors_and_timeouts": 0
      },
      {
        "name": "subscription_errors",
        "phase": "steady",
        "passed": true,
        "samples": 719,
        "minimum_samples": 5,
        "errors_and_timeouts": 0
      },
      {
        "name": "hls_unavailable_samples",
        "phase": "steady",
        "passed": true,
        "samples": 719,
        "minimum_samples": 5,
        "errors_and_timeouts": 0
      },
      {
        "name": "output_state_errors",
        "phase": "steady",
        "passed": true,
        "samples": 719,
        "minimum_samples": 5,
        "errors_and_timeouts": 0
      },
      {
        "name": "all configured routes and outputs stay live",
        "phase": "steady",
        "passed": true,
        "samples": 720,
        "minimum_samples": 5,
        "errors_and_timeouts": 0
      },
      {
        "name": "media-node-1 resource evidence",
        "phase": "steady",
        "passed": true,
        "samples": 720,
        "minimum_samples": 3,
        "errors_and_timeouts": 0
      },
      {
        "name": "control-plane resource evidence",
        "phase": "steady",
        "passed": true,
        "samples": 720,
        "minimum_samples": 3,
        "errors_and_timeouts": 0
      },
      {
        "name": "origin resource evidence",
        "phase": "steady",
        "passed": true,
        "samples": 720,
        "minimum_samples": 3,
        "errors_and_timeouts": 0
      },
      {
        "name": "sink resource evidence",
        "phase": "steady",
        "passed": true,
        "samples": 720,
        "minimum_samples": 3,
        "errors_and_timeouts": 0
      },
      {
        "name": "generator resource evidence",
        "phase": "steady",
        "passed": true,
        "samples": 720,
        "minimum_samples": 3,
        "errors_and_timeouts": 0
      },
      {
        "name": "collector resource evidence",
        "phase": "steady",
        "passed": true,
        "samples": 720,
        "minimum_samples": 3,
        "errors_and_timeouts": 0
      },
      {
        "name": "media-node-1 heartbeat freshness",
        "phase": "steady",
        "passed": true,
        "samples": 720,
        "minimum_samples": 5,
        "errors_and_timeouts": 0
      }
    ],
    "failures": [],
    "scope": "single-host-containers; sampled RTMP receiver A/V progress, not decoded playback or a server maximum"
  },
  "quarterMemoryMedianMiB": [
    997.673828125,
    996.345703125,
    998.4765625,
    998.708984375
  ],
  "mediaContainer": {
    "sameContainer": true,
    "restartCountBefore": 0,
    "restartCountAfter": 0,
    "cgroupBefore": {
      "memory.current": 25210880,
      "memory.peak": 25210880,
      "memory.max": 2147483648,
      "memory.events": {
        "low": 0,
        "high": 0,
        "max": 0,
        "oom": 0,
        "oom_kill": 0,
        "oom_group_kill": 0,
        "sock_throttled": 0
      },
      "cpu.max": {
        "quota": 100000,
        "period": 100000
      },
      "cpu.stat": {
        "usage_usec": 56821,
        "user_usec": 40586,
        "system_usec": 16234,
        "nice_usec": 0,
        "nr_periods": 2,
        "nr_throttled": 0,
        "throttled_usec": 0,
        "nr_bursts": 0,
        "burst_usec": 0
      }
    },
    "cgroupAfter": {
      "memory.current": 1048498176,
      "memory.peak": 1126096896,
      "memory.max": 2147483648,
      "memory.events": {
        "low": 0,
        "high": 0,
        "max": 0,
        "oom": 0,
        "oom_kill": 0,
        "oom_group_kill": 0,
        "sock_throttled": 0
      },
      "cpu.max": {
        "quota": 100000,
        "period": 100000
      },
      "cpu.stat": {
        "usage_usec": 1115524957,
        "user_usec": 672916260,
        "system_usec": 442608696,
        "nice_usec": 0,
        "nr_periods": 35823,
        "nr_throttled": 4539,
        "throttled_usec": 706979294,
        "nr_bursts": 0,
        "burst_usec": 0
      }
    }
  },
  "limitations": [
    "Receiver counters do not verify decoded playback.",
    "Physical network egress, failover, reconnect bursts, transcoding and audio mixing were not qualified.",
    "A media-container ceiling is not a whole-host recommendation.",
    "CPU quota throttling occurred; one steady hour does not prove recovery reserve."
  ]
}