DioCrafts
77 lines
3.2 KiB
JSON
77 lines
3.2 KiB
JSON
{
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"schemaVersion": 1,
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"generatedAt": "2026-07-21",
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"benchmark": "run_migration_workset_materialization",
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"baseline": "one ordered SQL stream collected into Vec before backend work",
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"candidates": [
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"keyset pages of 65536 rows, each page released after consumption",
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"keyset pages of 262144 rows, each page released after consumption"
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],
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"environment": {
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"clientPlatform": "macOS 26.5.2 arm64, Apple M4 Pro",
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"postgres": "18.2-alpine3.23 in oxicloud-postgres-1",
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"transport": "SQLx over the container private IP because the published localhost port refused connections",
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"profile": "release",
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"processIsolation": "one fresh client process per sample; connection and COUNT warm-up precede the timer"
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},
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"fixture": {
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"rows": 1000000,
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"rowShape": "64-byte lowercase hexadecimal hash plus bigint size",
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"expectedChecksum": 4156242879243796640,
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"order": "ORDER BY hash",
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"measuredCompleteRounds": 5,
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"plannedRounds": 7,
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"executionOrder": [
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["current", "paged65536", "paged262144"],
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["paged262144", "paged65536", "current"],
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["paged65536", "current", "paged262144"],
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["current", "paged65536", "paged262144"],
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["paged262144", "paged65536", "current"]
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]
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},
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"results": {
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"current": {
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"elapsedMs": [644.398, 964.231, 261.508, 1175.821, 265.14],
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"medianElapsedMs": 644.398,
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"maxToMinElapsedRatio": 4.5,
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"rssBytes": [106020864, 106070016, 106004480, 106053632, 106053632],
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"medianRssBytes": 106053632,
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"peakRows": 1000000
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},
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"paged65536": {
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"elapsedMs": [1198.549, 4080.427, 1622.317, 2558.891, 1508.613],
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"medianElapsedMs": 1622.317,
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"elapsedRatioVsCurrent": 2.5176,
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"medianElapsedRegressionPercent": 151.76,
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"maxToMinElapsedRatio": 3.4,
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"rssBytes": [18366464, 16236544, 16236544, 18350080, 18300928],
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"medianRssBytes": 18300928,
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"medianRssReductionPercent": 82.74,
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"peakRows": 65536
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},
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"paged262144": {
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"elapsedMs": [320.191, 1297.052, 2871.904, 2333.342, 1928.731],
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"medianElapsedMs": 1928.731,
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"elapsedRatioVsCurrent": 2.9931,
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"medianElapsedRegressionPercent": 199.31,
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"maxToMinElapsedRatio": 8.97,
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"rssBytes": [60833792, 60866560, 58703872, 63012864, 58654720],
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"medianRssBytes": 60833792,
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"medianRssReductionPercent": 42.64,
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"peakRows": 262144
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}
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},
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"correctness": {
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"allMeasuredSamplesReturnedRows": 1000000,
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"allMeasuredSamplesReturnedChecksum": 4156242879243796640,
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"orderedRowEquivalence": "PASS"
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},
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"invalidAttempts": [
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"The first host-private-IP run stopped after four samples with PoolTimedOut and was discarded.",
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"The recorded run stopped after five complete three-way rounds when the Docker bridge failed again; its complete rounds are retained because every mode is present in each round.",
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"A final attempt compiled the harness inside a preinstalled Rust container sharing PostgreSQL's network namespace, but the build container exited before producing any benchmark sample."
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],
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"decision": "rejected; production unchanged",
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"reason": "Both bounded-memory candidates reduced RSS, but neither passed the no-material-latency-regression gate. Production run_migration remains unchanged."
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}
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