LmdbJava Performance Regression Testing

Performance Analysis

The following tables show each benchmark ranked by performance, with percentage difference from the fastest version. Branch versions (e.g., master#65df2ee) are highlighted in bold.

Read by Key

Rank	Version	ms/op	vs Fastest
1	`0.0.5`	44.029	baseline
2	`0.5.0`	44.145	+0.3%
3	`master#65df2ee`	44.977	+2.2%
4	`0.8.3`	45.987	+4.4%
5	`gh-249#72d4e3f`	46.770	+6.2%
6	`0.9.1`	60.285	+36.9%

Write Entry

Rank	Version	ms/op	vs Fastest
1	`0.5.0`	76.138	baseline
2	`0.0.5`	76.202	+0.1%
3	`0.8.3`	83.222	+9.3%
4	`master#65df2ee`	86.645	+13.8%
5	`gh-249#72d4e3f`	86.657	+13.8%
6	`0.9.1`	123.271	+61.9%

Calculate xxHash64

Rank	Version	ms/op	vs Fastest
1	`0.9.1`	39.886	baseline
2	`0.5.0`	39.895	+0.0%
3	`0.0.5`	40.005	+0.3%
4	`0.8.3`	40.264	+0.9%
5	`gh-249#72d4e3f`	40.608	+1.8%
6	`master#65df2ee`	42.217	+5.8%

Iterate Sequentially

Rank	Version	ms/op	vs Fastest
1	`0.9.1`	19.853	baseline
2	`0.0.5`	19.966	+0.6%
3	`gh-249#72d4e3f`	20.396	+2.7%
4	`master#65df2ee`	20.404	+2.8%
5	`0.8.3`	20.602	+3.8%
6	`0.5.0`	21.687	+9.2%

Iterate Reverse

Rank	Version	ms/op	vs Fastest
1	`0.9.1`	18.361	baseline
2	`0.8.3`	19.327	+5.3%
3	`gh-249#72d4e3f`	19.401	+5.7%
4	`0.0.5`	19.418	+5.8%
5	`0.5.0`	19.605	+6.8%
6	`master#65df2ee`	19.631	+6.9%

Calculate CRC32

Rank	Version	ms/op	vs Fastest
1	`0.5.0`	43.332	baseline
2	`0.9.1`	43.391	+0.1%
3	`gh-249#72d4e3f`	44.042	+1.6%
4	`0.8.3`	44.118	+1.8%
5	`0.0.5`	44.973	+3.8%
6	`master#65df2ee`	45.670	+5.4%

Tested Versions

Test Configuration

The benchmark was executed on 2025-11-08 using LmdbJava Benchmarks.

All tests use the LmdbJava Agrona implementation with the following configuration:

Test Environment

CPU	AMD Ryzen 9 7900 12-Core Processor (24 cores)
RAM	62 GiB
OS	Linux 6.17.7-arch1-1 (x86_64)
Java	25.0.1

Benchmark Configuration

Implementation: LmdbJava Agrona only
Test Profile: Run 4 sequential integer configuration (100-byte values)
Key Type: Sequential 32-bit integers
Value Size: 100 bytes
Access Pattern: Sequential
Benchmarks: All 6 operations (readCrc, readKey, readRev, readSeq, readXxh64, write)