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@kriszyp kriszyp commented Dec 26, 2025

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📊 Benchmark Results

get-sync.bench.ts

getSync() > random keys - small key size (100 records)

Implementation Rank Operations/sec Mean (ms) Min (ms) Max (ms) RME (%) Samples
🥇 lmdb 1 21.05K ops/sec 47.52 41.81 434.831 0.835 10,523
🥈 rocksdb 2 4.39K ops/sec 227.729 209.453 3,019.371 1.35 2,196

getSync() > sequential keys - small key size (100 records)

Implementation Rank Operations/sec Mean (ms) Min (ms) Max (ms) RME (%) Samples
🥇 lmdb 1 24.65K ops/sec 40.57 35.88 2,301.422 1.26 12,325
🥈 rocksdb 2 4.53K ops/sec 220.574 207.953 805.116 0.378 2,267

ranges.bench.ts

getRange() > small range (100 records, 50 range)

Implementation Rank Operations/sec Mean (ms) Min (ms) Max (ms) RME (%) Samples
🥇 lmdb 1 23.93K ops/sec 41.79 36.60 330.712 0.948 11,965
🥈 rocksdb 2 3.40K ops/sec 294.171 266.332 834.419 1.21 1,700

realistic-load.bench.ts

Realistic write load with workers > write variable records with transaction log

Implementation Rank Operations/sec Mean (ms) Min (ms) Max (ms) RME (%) Samples
🥇 rocksdb 1 182.05 ops/sec 5,493.002 66.14 159,994.5 46.46 384
🥈 lmdb 2 26.23 ops/sec 38,120.156 273.754 1,199,452.389 136.947 64.00

transaction-log.bench.ts

Transaction log > read 100 iterators while write log with 100 byte records

Implementation Rank Operations/sec Mean (ms) Min (ms) Max (ms) RME (%) Samples
🥇 rocksdb 1 33.43K ops/sec 29.91 15.59 495.46 0.702 16,717
🥈 lmdb 2 424.24 ops/sec 2,357.155 942.46 7,841.532 3.92 213

Transaction log > read one entry from random position from log with 1000 100 byte records

Implementation Rank Operations/sec Mean (ms) Min (ms) Max (ms) RME (%) Samples
🥇 rocksdb 1 581.21K ops/sec 1.72 1.52 435.613 0.337 290,605
🥈 lmdb 2 301.88K ops/sec 3.31 1.70 4,919.223 4.38 151,000

worker-put-sync.bench.ts

putSync() > random keys - small key size (100 records, 10 workers)

Implementation Rank Operations/sec Mean (ms) Min (ms) Max (ms) RME (%) Samples
🥇 rocksdb 1 887.64 ops/sec 1,126.587 969.888 1,822.465 0.274 1,776
🥈 lmdb 2 0.91 ops/sec 1,098,659.178 967,231.815 1,141,261.678 3.22 10.00

worker-transaction-log.bench.ts

Transaction log with workers > write log with 100 byte records

Implementation Rank Operations/sec Mean (ms) Min (ms) Max (ms) RME (%) Samples
🥇 rocksdb 1 17.79K ops/sec 56.20 30.35 6,169.229 0.841 35,588
🥈 lmdb 2 792.52 ops/sec 1,261.795 82.00 17,994.995 5.80 1,587

Results from commit 4ed8c95

@kriszyp kriszyp marked this pull request as ready for review December 27, 2025 22:22
@kriszyp kriszyp requested a review from cb1kenobi December 27, 2025 22:22
kriszyp and others added 4 commits January 7, 2026 15:57
Co-authored-by: Chris Barber <chris@harperdb.io>
Co-authored-by: Chris Barber <chris@harperdb.io>
Co-authored-by: Chris Barber <chris@harperdb.io>
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@cb1kenobi cb1kenobi left a comment

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Awesome!

@cb1kenobi cb1kenobi merged commit 605d689 into main Jan 7, 2026
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3 participants