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DO NOT MERGE Combine PiecewiseSequence take stack#8837

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codex/piecewise-sequence-combined-pr
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DO NOT MERGE Combine PiecewiseSequence take stack#8837
danking wants to merge 39 commits into
developfrom
codex/piecewise-sequence-combined-pr

Merge remote-tracking branch 'origin/codex/list-take-piecewise-elemen…

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CodSpeed HQ / CodSpeed Performance Analysis failed Jul 17, 2026 in 0s

1 benchmark regressed

⚠️ 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

⚡ 32 improved benchmarks
❌ 1 regressed benchmark
✅ 1637 untouched benchmarks
🆕 128 new benchmarks
⏩ 53 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
Simulation varbinview_large 389.9 µs 446.4 µs -12.66%
Simulation struct_large 432.6 µs 38 µs ×11
Simulation fsl_large 616.5 µs 87.8 µs ×7
Simulation take_fsl_random[1024, 1000] 15.2 ms 6 ms ×2.5
Simulation take_fsl_nullable_random[1024, 1000] 14.8 ms 6 ms ×2.5
Simulation take_fsl_random[256, 1000] 3.5 ms 1.6 ms ×2.2
Simulation take_fsl_nullable_random[256, 1000] 3.4 ms 1.6 ms ×2.1
Simulation take_fsl_random[1024, 100] 1,568.1 µs 798 µs +96.51%
Simulation take_fsl_nullable_random[1024, 100] 1,535.9 µs 808.3 µs +90.02%
Simulation take_fsl_random[256, 100] 418.5 µs 237.7 µs +76.06%
Simulation take_fsl_random[64, 1000] 815.7 µs 468.1 µs +74.28%
Simulation take_fsl_nullable_random[64, 1000] 812 µs 482.8 µs +68.19%
Simulation take_fsl_nullable_random[256, 100] 415.8 µs 247.9 µs +67.73%
Simulation list_i32_large 172.3 µs 106.2 µs +62.22%
Simulation take_fsl_random[16, 1000] 237.9 µs 182.4 µs +30.43%
Simulation take_filter_list_slice_mask_random_indices[256, 50] 118.4 µs 93.2 µs +27.06%
Simulation take_filter_list_small_uncached_random_mask_random_indices[256, 10] 116.1 µs 91.6 µs +26.82%
Simulation take_filter_list_nullable_random_mask_random_indices[256, 50] 128.4 µs 101.3 µs +26.78%
Simulation take_filter_list_small_random_mask_random_indices[256, 10] 115.4 µs 91.1 µs +26.69%
Simulation take_filter_list_slice_mask_random_indices[768, 50] 118.6 µs 93.9 µs +26.3%
... ... ... ... ... ...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

Tip

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


Comparing codex/piecewise-sequence-combined-pr (012f18f) with develop (e6eeaae)

Open in CodSpeed

Footnotes

  1. 53 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.