DioCrafts
129 lines
4.1 KiB
JSON
129 lines
4.1 KiB
JSON
{
|
|
"benchmark": "verify_integrity_sqlx_streaming",
|
|
"date": "2026-07-22",
|
|
"decision": {
|
|
"status": "rejected",
|
|
"reason": "The bounded producer/channel variant reduced RSS by 74.23% and accelerated phase 1, but the same-round full-method median was 4.17% slower than the historical implementation. No streaming code was applied to production."
|
|
},
|
|
"fixture": {
|
|
"database": "fresh disposable PostgreSQL database",
|
|
"manifest_rows": 1000,
|
|
"manifest_occurrences": 250000,
|
|
"blob_rows": 250000,
|
|
"query_count": {
|
|
"phase_one": 1,
|
|
"full_method": 2
|
|
},
|
|
"prefetch_rows": 16,
|
|
"normal_prefetch_occurrence_bound": 4000,
|
|
"window_occurrences": 256,
|
|
"large_manifest_occurrences": 1024,
|
|
"samples_per_mode": 7,
|
|
"fresh_processes": true,
|
|
"rotated_order": true
|
|
},
|
|
"semantic_gates": [
|
|
{
|
|
"scenario": "empty",
|
|
"rows": 0,
|
|
"phase_calls": [0, 0, 0, 0],
|
|
"full_calls": [0, 0, 0, 0],
|
|
"issues_equal": true
|
|
},
|
|
{
|
|
"scenario": "one",
|
|
"rows": 1,
|
|
"phase_calls": [1, 1, 1, 1],
|
|
"full_calls": [2, 2, 2, 2],
|
|
"issues_equal": true
|
|
},
|
|
{
|
|
"scenario": "four",
|
|
"rows": 1,
|
|
"phase_calls": [4, 4, 4, 4],
|
|
"full_calls": [8, 8, 8, 8],
|
|
"issues_equal": true
|
|
},
|
|
{
|
|
"scenario": "semantics_with_malformed",
|
|
"rows": 4,
|
|
"issues": 8,
|
|
"checksum": 1417964566409558305,
|
|
"phase_calls_historical_materialized_direct_prefetch": [6, 4, 4, 4],
|
|
"full_calls_historical_materialized_direct_prefetch": [10, 8, 8, 8],
|
|
"malformed_probe_suppressed": true,
|
|
"issues_equal_and_ordered": true
|
|
},
|
|
{
|
|
"scenario": "shared",
|
|
"phase_calls_historical_materialized_direct_prefetch": [512, 64, 64, 64],
|
|
"full_calls_historical_materialized_direct_prefetch": [544, 96, 96, 96],
|
|
"issues_equal": true
|
|
},
|
|
{
|
|
"scenario": "unique",
|
|
"phase_calls": [256, 256, 256, 256],
|
|
"full_calls": [512, 512, 512, 512],
|
|
"issues_equal": true
|
|
},
|
|
{
|
|
"scenario": "large_manifest_sliced",
|
|
"phase_calls": [1024, 1024, 1024, 1024],
|
|
"full_calls": [2048, 2048, 2048, 2048],
|
|
"issues_equal": true
|
|
}
|
|
],
|
|
"final_same_round_abc_medians": {
|
|
"historical": {
|
|
"phase_ms": 638.057167,
|
|
"full_ms": 1146.865750,
|
|
"max_rss_bytes": 32620544
|
|
},
|
|
"materialized_owned": {
|
|
"phase_ms": 754.104000,
|
|
"full_ms": 1507.712417,
|
|
"max_rss_bytes": 32751616
|
|
},
|
|
"streaming_prefetch": {
|
|
"phase_ms": 370.620500,
|
|
"full_ms": 1194.661583,
|
|
"max_rss_bytes": 8404992
|
|
},
|
|
"prefetch_vs_historical": {
|
|
"phase_speedup": 1.721592,
|
|
"full_speedup": 0.959992,
|
|
"full_regression_percent": 4.1675,
|
|
"rss_reduction_percent": 74.2341
|
|
},
|
|
"prefetch_vs_materialized_owned": {
|
|
"phase_speedup": 2.034707,
|
|
"full_speedup": 1.262041,
|
|
"rss_reduction_percent": 74.3372
|
|
}
|
|
},
|
|
"raw_final_abc_samples": {
|
|
"historical": {
|
|
"phase_ms": [638.057167, 302.385875, 473.900417, 774.089833, 632.479584, 1075.826334, 1435.878333],
|
|
"full_ms": [1146.865750, 630.661958, 1089.854458, 1794.876250, 885.336625, 1857.877417, 1657.854292],
|
|
"max_rss_bytes": [32669696, 32538624, 32620544, 32636928, 32620544, 32669696, 32604160]
|
|
},
|
|
"materialized_owned": {
|
|
"phase_ms": [299.143625, 704.092708, 657.428250, 1017.416708, 1391.611125, 754.104000, 1051.222917],
|
|
"full_ms": [774.324375, 1370.037708, 1230.500333, 1860.589583, 1635.081625, 1507.712417, 1900.343500],
|
|
"max_rss_bytes": [32833536, 32751616, 32899072, 32800768, 32555008, 32555008, 32718848]
|
|
},
|
|
"streaming_prefetch": {
|
|
"phase_ms": [276.988833, 370.693334, 1387.695584, 370.620500, 219.138375, 637.540250, 332.878083],
|
|
"full_ms": [581.776666, 870.599875, 1666.224584, 1194.661583, 923.753250, 2379.057125, 1565.068625],
|
|
"max_rss_bytes": [8339456, 8404992, 8617984, 8667136, 8552448, 8372224, 8290304]
|
|
}
|
|
},
|
|
"connection_lifecycle": {
|
|
"pool_max_connections": 1,
|
|
"held_during_nonempty_stream": true,
|
|
"released_before_phase_two": true,
|
|
"extra_queries": 0,
|
|
"temporary_database_removed": true
|
|
}
|
|
}
|