Skip to content

Write vortex-compact with Zstdbuffers instead of Zstd with unstable_encodings#8542

Open
myrrc wants to merge 2 commits into
developfrom
myrrc/bench-zstdbuffers-byte-length
Open

Write vortex-compact with Zstdbuffers instead of Zstd with unstable_encodings#8542
myrrc wants to merge 2 commits into
developfrom
myrrc/bench-zstdbuffers-byte-length

Merge branch 'develop' into myrrc/bench-zstdbuffers-byte-length

6cd01e8
Select commit
Loading
Failed to load commit list.
CodSpeed HQ / CodSpeed Performance Analysis failed Jun 24, 2026 in 0s

1 benchmark regressed

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 5 improved benchmarks
❌ 1 regressed benchmark
✅ 1583 untouched benchmarks
⏩ 4 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
Simulation slice_empty_vortex 310 ns 368.3 ns -15.84%
WallTime cuda/bitpacked_u8/unpack/3bw[100M] 353.7 µs 299.8 µs +17.97%
Simulation encode_varbin[(1000, 8)] 159.3 µs 140.4 µs +13.46%
Simulation encode_varbin[(1000, 4)] 158.3 µs 139.8 µs +13.27%
Simulation encode_varbin[(1000, 2)] 157.6 µs 140.7 µs +12.02%
Simulation encode_varbin[(1000, 32)] 160.1 µs 144.8 µs +10.58%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.


Comparing myrrc/bench-zstdbuffers-byte-length (6cd01e8) with develop (5e95e75)2

Open in CodSpeed

Footnotes

  1. 4 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports.

  2. No successful run was found on develop (51752c8) during the generation of this report, so 5e95e75 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report.