{ "measuredAt": "2026-11-02T10:48:24.664Z", "runtime": { "execution": "compiled JavaScript", "node": "v24.14.1", "platform": "linux", "arch": "x64", "cpu": "Intel Xeon E312xx (Sandy Bridge, IBRS update)", "logicalCpus": 12, "totalMemoryGiB": 35.22977066040039, "loadAverage": [ 2.19, 3.52, 3.52 ] }, "scope": "Compiled local loopback HTTP; changed text; 32 serial and 64 concurrency-8 warm samples per scenario. Percentiles pooled across two batches. CPU/RSS include client and server. Experimental NORMAL affects disposable benchmark databases only.", "verifiedHttpResponses": 2700, "rows": [ { "sizeBytes": 16384, "label": "16 KiB", "baseline": "raw source cache", "baselineMetrics": { "coldMs": 145.9149209999996, "serial": { "p50Ms": 8.318075000000135, "p95Ms": 10.736985999999888, "requestsPerSecond": 117.44442918645578, "cpuMsPerRequest": 11.06740625, "peakRssMiB": 146.50390625 }, "concurrent8": { "p50Ms": 50.20099499999969, "p95Ms": 71.84271200000012, "requestsPerSecond": 142.73942902734086, "cpuMsPerRequest": 9.620406249999998, "peakRssMiB": 170.53125 } }, "currentMetrics": { "coldMs": 709.8329450000001, "serial": { "p50Ms": 44.88915300000008, "p95Ms": 68.10151200000018, "requestsPerSecond": 20.710932531095363, "cpuMsPerRequest": 13.53253125, "peakRssMiB": 147.47265625 }, "concurrent8": { "p50Ms": 362.3927130000002, "p95Ms": 462.1094459999995, "requestsPerSecond": 20.755357071571403, "cpuMsPerRequest": 11.042078125, "peakRssMiB": 154.1328125 } }, "experimentalNormalMetrics": { "coldMs": 211.99763500000017, "serial": { "p50Ms": 6.900600000000395, "p95Ms": 9.86466399999972, "requestsPerSecond": 134.73985687410286, "cpuMsPerRequest": 8.7118125, "peakRssMiB": 141.24609375 }, "concurrent8": { "p50Ms": 38.635037999999895, "p95Ms": 46.82847199999969, "requestsPerSecond": 197.41218048206238, "cpuMsPerRequest": 6.15025, "peakRssMiB": 147.6875 } }, "gzipSavingPercent": 61.97907215871288 }, { "sizeBytes": 262144, "label": "256 KiB", "baseline": "raw source cache", "baselineMetrics": { "coldMs": 100.41967600000021, "serial": { "p50Ms": 36.49021599999992, "p95Ms": 53.95963900000015, "requestsPerSecond": 26.236596142201567, "cpuMsPerRequest": 42.746187500000005, "peakRssMiB": 215.1875 }, "concurrent8": { "p50Ms": 120.57758600000034, "p95Ms": 250.78685799999994, "requestsPerSecond": 53.7503475211922, "cpuMsPerRequest": 37.485390625, "peakRssMiB": 268.109375 } }, "currentMetrics": { "coldMs": 726.5002400000001, "serial": { "p50Ms": 45.89932399999998, "p95Ms": 73.79595599999993, "requestsPerSecond": 20.372770202529612, "cpuMsPerRequest": 16.253875, "peakRssMiB": 160.78515625 }, "concurrent8": { "p50Ms": 326.38565800000015, "p95Ms": 444.0948499999995, "requestsPerSecond": 23.057422718927143, "cpuMsPerRequest": 12.072328124999999, "peakRssMiB": 185.7578125 } }, "experimentalNormalMetrics": { "coldMs": 293.5069330000001, "serial": { "p50Ms": 11.702889000000141, "p95Ms": 16.41937599999983, "requestsPerSecond": 80.13277379588973, "cpuMsPerRequest": 14.18359375, "peakRssMiB": 160.62890625 }, "concurrent8": { "p50Ms": 72.28398599999946, "p95Ms": 89.62643300000036, "requestsPerSecond": 105.43423551997391, "cpuMsPerRequest": 11.027765625, "peakRssMiB": 185.6328125 } }, "gzipSavingPercent": 61.890196641851716 }, { "sizeBytes": 2097152, "label": "2 MiB", "baseline": "existing transformed cache", "baselineMetrics": { "coldMs": 2903.1252619999996, "serial": { "p50Ms": 236.22282199999972, "p95Ms": 288.4866490000004, "requestsPerSecond": 4.133831174669408, "cpuMsPerRequest": 362.9403125, "peakRssMiB": 336.703125 }, "concurrent8": { "p50Ms": 690.5366940000022, "p95Ms": 929.2231830000001, "requestsPerSecond": 10.958910900736049, "cpuMsPerRequest": 253.19115625, "peakRssMiB": 308.02734375 } }, "currentMetrics": { "coldMs": 4133.51807, "serial": { "p50Ms": 60.49789199999941, "p95Ms": 100.03485599999931, "requestsPerSecond": 15.358397676800456, "cpuMsPerRequest": 50.210843749999995, "peakRssMiB": 298.671875 }, "concurrent8": { "p50Ms": 478.30868799999917, "p95Ms": 528.2149260000006, "requestsPerSecond": 16.483621344424616, "cpuMsPerRequest": 55.64621875, "peakRssMiB": 296.6875 } }, "experimentalNormalMetrics": { "coldMs": 3895.830503, "serial": { "p50Ms": 25.95565600000009, "p95Ms": 32.11927700000069, "requestsPerSecond": 40.429950182644916, "cpuMsPerRequest": 43.713375, "peakRssMiB": 307.65625 }, "concurrent8": { "p50Ms": 161.56209900000067, "p95Ms": 324.75534399999924, "requestsPerSecond": 43.95237969807028, "cpuMsPerRequest": 39.839515625000004, "peakRssMiB": 307.93359375 } }, "gzipSavingPercent": 62.199088089151175 } ], "indexProbe": { "measuredAt": "2026-11-02T10:42:36.314Z", "scope": "Synthetic metadata-only scale probe. Dummy blob rows have no payload files; excludes directory scanning and disk reads for those rows. Real reads use one verified blob. Eviction probe uses real 64 KiB files.", "node": "v24.14.1", "cardinality": [ { "seedBlobs": 0, "seedAliases": 0, "seedDecisions": 0, "seedHistory": 0, "adminStats": { "p50Ms": 0.5495260000002418, "p95Ms": 0.8194220000000314, "maxMs": 0.8764419999997699 }, "warmSourceHit": { "p50Ms": 22.106009000000086, "p95Ms": 32.67359299999998, "maxMs": 38.92065599999978 }, "decisionWrite": { "p50Ms": 6.600801999999931, "p95Ms": 12.472383000000264, "maxMs": 15.8033989999999 }, "smallFill": { "p50Ms": 71.12627699999939, "p95Ms": 98.24754799999982, "maxMs": 100.35789100000011 } }, { "seedBlobs": 10000, "seedAliases": 20000, "seedDecisions": 10000, "seedHistory": 10000, "adminStats": { "p50Ms": 6.904306000000361, "p95Ms": 9.677666999999929, "maxMs": 12.638716999999815 }, "warmSourceHit": { "p50Ms": 22.83701199999996, "p95Ms": 47.79449499999828, "maxMs": 102.36107600000014 }, "decisionWrite": { "p50Ms": 8.062501999999768, "p95Ms": 13.995523999999932, "maxMs": 14.909832000001188 }, "smallFill": { "p50Ms": 75.03789299999971, "p95Ms": 117.16210499999943, "maxMs": 143.80038499999955 } }, { "seedBlobs": 100000, "seedAliases": 200000, "seedDecisions": 100000, "seedHistory": 100000, "adminStats": { "p50Ms": 66.83604900000137, "p95Ms": 78.69937500000015, "maxMs": 87.98320400000011 }, "warmSourceHit": { "p50Ms": 26.310491000000184, "p95Ms": 82.98941600000035, "maxMs": 112.1549300000006 }, "decisionWrite": { "p50Ms": 22.948387000000366, "p95Ms": 45.47333599999911, "maxMs": 56.50094800000079 }, "smallFill": { "p50Ms": 136.3280279999999, "p95Ms": 214.8330500000011, "maxMs": 312.4176129999978 } } ], "eviction": { "requests": 300, "distinctObjects": 100, "upstreamFills": 300, "hitRate": 0, "elapsedMs": 24658.882357999995, "p50Ms": 74.17433299999539, "p95Ms": 107.83662400000321, "peakAllocated": 3997696, "final": { "blobs": 60, "originalBytes": 3932160, "storedBytes": 3932160, "allocatedBytes": 3932160, "oldestAccess": 1793616151486, "budgetBytes": 4194304, "reservedBytes": 0, "maxObjectBytes": 65536, "activeReaders": 0, "decisions": 0 } }, "assertions": "passed" }, "recommendation": "Keep production disabled pending reduction of synchronous metadata commits and retesting. No application settings changed." }