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feat: add bitpacked chunk offset child - #9940

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mhk197 merged 1 commit into
mk/bitpacked-stack-02-cpu-layoutfrom
mk/bitpacked-stack-04-offset-child
Sep 23, 2026
Merged

mhk197 merged 1 commit into
mk/bitpacked-stack-02-cpu-layoutfrom
mk/bitpacked-stack-04-offset-child

refactor: store bitpacked chunk offsets before migrating kernels

ecd1bd3
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CodSpeed / CodSpeed Performance Analysis failed Sep 23, 2026

Performance Regression: -22.08%

⚠️ 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.

❌ 3 regressed benchmarks
✅ 216 untouched benchmarks
⏩ 2342 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Benchmark BASE HEAD Efficiency
arrow_checked_add_u32_neon[16384] 12.3 µs 20.4 µs -39.83%
dbp_split_kernel_mixed_null_neon[(I256, 1024)] 1.9 µs 2.2 µs -12.21%
mul_u32_nonnull_avx512 5.6 µs 6.3 µs -10.44%

Tip

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


Comparing mk/bitpacked-stack-04-offset-child (ecd1bd3) with mk/bitpacked-stack-03-width-child (6dc1734)

Open in CodSpeed

Footnotes

  1. 2342 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.