data-access-benchmark/README.md

data-access-benchmark

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.

Last updated: 2026-04-05T21:50:27.465645035Z

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: 26

Results

Throughput

Rank	Fixture	Score	Error	Unit
1	in-memory	1089.133	18.619	ops/us
2	memory-mapped-file	79.212	3.253	ops/us
3	datastore4j	61.317	8.837	ops/us
4	leveldb	40.735	3.376	ops/us
5	mapdb	21.572	0.850	ops/us
6	sqlite-jdbc-memory	4.074	0.386	ops/us
7	lmdb	3.133	0.948	ops/us
8	kryo	2.560	0.154	ops/us
9	gson	2.266	0.191	ops/us
10	sqlite-jdbc	2.026	0.090	ops/us
11	sqlite-ormlite-memory	1.202	0.046	ops/us
12	sqlite-ormlite	0.915	0.049	ops/us
13	duckdb-jdbc	0.053	0.002	ops/us

AverageTime

Rank	Fixture	Score	Error	Unit
1	in-memory	0.011	0.000	us/op
2	memory-mapped-file	0.152	0.010	us/op
3	datastore4j	0.213	0.009	us/op
4	leveldb	0.291	0.007	us/op
5	mapdb	0.397	0.048	us/op
6	sqlite-jdbc-memory	2.989	0.441	us/op
7	lmdb	3.906	1.177	us/op
8	kryo	4.686	0.557	us/op
9	gson	5.310	0.319	us/op
10	sqlite-jdbc	5.984	0.313	us/op
11	sqlite-ormlite-memory	10.140	0.744	us/op
12	sqlite-ormlite	13.156	0.389	us/op
13	duckdb-jdbc	229.267	29.402	us/op