Those are the redb benchmarks with different key value stores and the two different versions of LMDB living on two different branches: mdb.master and mdb.master3. The benchmarks were done on my iMac M3 (2023).
| redb | lmdb (mdb.master) | lmdb (mdb.master3) | rocksdb | sled | sanakirja | |
|---|---|---|---|---|---|---|
| bulk load | 2.97s | 982.90ms | 987.29ms | 5.40s | 4.49s | 865.30ms |
| individual writes | 443.95ms | 7.30ms | 7.37ms | 2.49ms | 403.99ms | 52.14ms |
| batch writes | 4.07s | 2.09s | 2.10s | 222.74ms | 1.38s | 3.63s |
| len() | 2.96µs | 125.00ns | 125.00ns | 174.93ms | 630.46ms | 36.70ms |
| random reads | 701.95ms | 766.74ms | 787.19ms | 2.29s | 909.50ms | 685.38ms |
| random reads | 697.24ms | 755.19ms | 781.41ms | 2.05s | 898.95ms | 686.01ms |
| random range reads | 1.62s | 1.15s | 1.15s | 3.68s | 3.71s | 1.03s |
| random range reads | 1.62s | 1.25s | 1.15s | 3.55s | 3.71s | 1.03s |
| random reads (4 threads) | 205.71ms | 207.71ms | 210.11ms | 613.05ms | 273.04ms | 278.16ms |
| random reads (8 threads) | 178.93ms | 140.11ms | 120.04ms | 500.02ms | 233.05ms | 492.31ms |
| random reads (16 threads) | 187.34ms | 185.21ms | 151.11ms | 462.72ms | 242.46ms | 559.02ms |
| random reads (32 threads) | 183.29ms | 143.41ms | 128.85ms | 403.92ms | 240.05ms | 549.28ms |
| removals | 2.31s | 840.69ms | 762.52ms | 2.35s | 1.62s | 980.74ms |
| size after bench | 1.00 GiB | 584.85 MiB | 584.88 MiB | 383.33 MiB | 458.50 MiB | 4.00 GiB |