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performance: Use push_unchecked when building indices for element take in fixedsizedlist take #6222

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CodSpeed HQ / CodSpeed Performance Analysis failed Feb 2, 2026 in 0s

Performance Regression: -32.37%

Summary

⚡ 20 improved benchmarks
❌ 1 regressed benchmark
✅ 1117 untouched benchmarks
⏩ 1384 skipped benchmarks1

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
Simulation chunked_bool_into_canonical[(1000, 10)] 43.1 µs 63.7 µs -32.37%
Simulation take_fsl_nullable_random[1024, 100] 3.1 ms 2 ms +54.43%
Simulation take_fsl_nullable_random[256, 100] 796.3 µs 525.5 µs +51.54%
Simulation take_fsl_nullable_random[1024, 1000] 32.6 ms 22.6 ms +44.58%
Simulation take_fsl_nullable_random[16, 1000] 533.6 µs 399.2 µs +33.66%
Simulation take_fsl_nullable_random[64, 1000] 1.9 ms 1.3 ms +47.87%
Simulation take_fsl_nullable_random[64, 100] 233.6 µs 165.5 µs +41.13%
Simulation take_fsl_random[16, 1000] 516.1 µs 366.5 µs +40.81%
Simulation take_fsl_nullable_random[4096, 1000] 131 ms 90.8 ms +44.32%
Simulation take_fsl_random[1024, 1000] 34.4 ms 23 ms +49.44%
Simulation take_fsl_nullable_random[16, 100] 140.7 µs 123.6 µs +13.83%
Simulation take_fsl_nullable_random[256, 1000] 7.2 ms 4.7 ms +53.19%
Simulation take_fsl_random[1024, 100] 3.1 ms 2 ms +57.14%
Simulation take_fsl_random[4096, 1000] 138.2 ms 92.7 ms +49.1%
Simulation take_fsl_nullable_random[4096, 100] 12.4 ms 8.1 ms +53.39%
Simulation take_fsl_random[256, 100] 804.6 µs 519.7 µs +54.82%
Simulation take_fsl_random[16, 100] 75 µs 59.7 µs +25.61%
Simulation take_fsl_random[4096, 100] 12.7 ms 8.2 ms +55.62%
Simulation take_fsl_random[256, 1000] 7.8 ms 4.9 ms +57.72%
Simulation take_fsl_random[64, 1000] 2 ms 1.3 ms +53.46%
... ... ... ... ... ...

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

Footnotes

  1. 1384 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.