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ListLayout bench#8640

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ListLayout bench#8640
mhk197 wants to merge 1 commit into
mk/add-list-layoutfrom
mk/list-layout-reader-bench

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@mhk197 mhk197 commented Jul 1, 2026 •
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Add a layout reader benchmark comparing ListLayout and FlatLayout

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bench
b41e81f 
Signed-off-by: Matt Katz <mhkatz97@gmail.com>
@mhk197 mhk197 changed the title bench ListLayout bench Jul 1, 2026
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codspeed-hq Bot commented Jul 1, 2026

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Merging this PR will not alter performance

⚠️ 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

⚡ 8 improved benchmarks
❌ 2 regressed benchmarks
✅ 1585 untouched benchmarks
⏩ 4 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
❌ Simulation bitwise_not_vortex_buffer_mut[128] 215.3 ns 244.4 ns -11.93%
❌ Simulation chunked_varbinview_into_canonical[(100, 100)] 271.6 µs 306.4 µs -11.37%
⚡ Simulation chunked_varbinview_opt_canonical_into[(1000, 10)] 206.2 µs 169.6 µs +21.57%
⚡ Simulation chunked_varbinview_into_canonical[(1000, 10)] 205.5 µs 169.3 µs +21.38%
⚡ Simulation chunked_varbinview_opt_into_canonical[(1000, 10)] 219.6 µs 183.4 µs +19.75%
⚡ Simulation slice_empty_vortex 397.8 ns 339.4 ns +17.18%
⚡ Simulation encode_varbin[(1000, 8)] 155.4 µs 140.1 µs +10.88%
⚡ Simulation encode_varbin[(1000, 4)] 153.7 µs 139.2 µs +10.43%
⚡ Simulation encode_varbin[(1000, 2)] 153.2 µs 138.7 µs +10.41%
⚡ Simulation encode_varbin[(1000, 32)] 159.1 µs 144.4 µs +10.16%

Tip

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

Comparing mk/list-layout-reader-bench (b41e81f) with mk/add-list-layout (ebbac66)

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. ↩

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