# data-access-benchmark

```bash
mvn package -q
java -jar target/benchmarks.jar

# optional: suppress JDK warning from the launcher JVM
java --sun-misc-unsafe-memory-access=allow -jar target/benchmarks.jar
```

## Benchmark Results (auto-updated)

This section is automatically refreshed by the app after each benchmark run.
Only the content between the markers below is rewritten, so the rest of this README stays untouched.

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Last updated: 2026-04-05T15:49:01.412343645Z

### System info

- OS: `Linux 6.12.74+deb13+1-amd64` (amd64)
- Java: `25.0.2` (vendor: `Microsoft`)
- JVM: `OpenJDK 64-Bit Server VM` `25.0.2+10-LTS`
- CPU model: `AMD Ryzen 5 9600X 6-Core Processor`
- Total physical memory: `80078 MB`
- Available processors: `12`
- Max heap: `20032 MB`

### Run context

- Benchmark: `com.benchmark.benchmarks.DataAccessBenchmark.readSingleUser`
- Thread count: `12`
- Fixtures in this snapshot: `24`

### Results

#### Throughput

| Rank | Fixture | Score | Error | Unit |
|---:|---|---:|---:|---|
| 1 | `in-memory` | 1075.880 | 31.733 | `ops/us` |
| 2 | `chronicle-map` | 85.407 | 3.388 | `ops/us` |
| 3 | `memory-mapped-file` | 79.393 | 1.957 | `ops/us` |
| 4 | `mapdb` | 25.647 | 2.140 | `ops/us` |
| 5 | `sqlite-jdbc-memory` | 3.992 | 0.195 | `ops/us` |
| 6 | `lmdb` | 3.300 | 1.325 | `ops/us` |
| 7 | `kryo` | 2.425 | 0.168 | `ops/us` |
| 8 | `gson` | 2.159 | 0.080 | `ops/us` |
| 9 | `sqlite-jdbc` | 1.932 | 0.181 | `ops/us` |
| 10 | `sqlite-ormlite-memory` | 1.118 | 0.164 | `ops/us` |
| 11 | `sqlite-ormlite` | 0.864 | 0.049 | `ops/us` |
| 12 | `duckdb-jdbc` | 0.048 | 0.006 | `ops/us` |

#### AverageTime

| Rank | Fixture | Score | Error | Unit |
|---:|---|---:|---:|---|
| 1 | `in-memory` | 0.011 | 0.001 | `us/op` |
| 2 | `chronicle-map` | 0.143 | 0.007 | `us/op` |
| 3 | `memory-mapped-file` | 0.154 | 0.004 | `us/op` |
| 4 | `mapdb` | 0.475 | 0.031 | `us/op` |
| 5 | `sqlite-jdbc-memory` | 3.093 | 0.154 | `us/op` |
| 6 | `lmdb` | 3.757 | 0.868 | `us/op` |
| 7 | `kryo` | 4.841 | 0.610 | `us/op` |
| 8 | `gson` | 5.561 | 0.416 | `us/op` |
| 9 | `sqlite-jdbc` | 6.192 | 0.496 | `us/op` |
| 10 | `sqlite-ormlite-memory` | 10.528 | 0.626 | `us/op` |
| 11 | `sqlite-ormlite` | 13.744 | 1.040 | `us/op` |
| 12 | `duckdb-jdbc` | 255.975 | 30.802 | `us/op` |

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