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[perf] faster sparse bitpacked filter & take - #9723

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wm/fastlanes-sparse-extraction
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[perf] faster sparse bitpacked filter & take#9723
lwwmanning wants to merge 2 commits into
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wm/fastlanes-sparse-extraction

perf(fastlanes): Batch sparse extraction

9f1f51e
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CodSpeed HQ / CodSpeed Performance Analysis failed Sep 1, 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.

⚡ 3 improved benchmarks
❌ 1 regressed benchmark
✅ 2086 untouched benchmarks
🆕 261 new benchmarks
⏩ 206 skipped benchmarks1
🗄️ 4 archived benchmarks run2

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
❌ Simulation cold_misaligned[(16, 64)] 345.8 µs 389.4 µs -11.21%
⚡ WallTime words_gather_scalar_avx2[65536] 9.4 µs 8.3 µs +13.22%
⚡ WallTime mul_u32_nonnull_avx512 6.3 µs 5.8 µs +10.23%
⚡ Simulation take_10_contiguous 52.4 µs 47.5 µs +10.12%
🆕 WallTime filter_neon[32] N/A 1.7 µs N/A
🆕 WallTime filter_neon[48] N/A 2.1 µs N/A
🆕 WallTime filter_neon[8] N/A 1.2 µs N/A
🆕 WallTime filter_neon[32] N/A 2 µs N/A
🆕 WallTime filter_neon[48] N/A 2.4 µs N/A
🆕 WallTime filter_neon[8] N/A 1.3 µs N/A
🆕 WallTime filter_neon[32] N/A 1.7 µs N/A
🆕 WallTime filter_neon[48] N/A 2.1 µs N/A
🆕 WallTime filter_neon[8] N/A 1.2 µs N/A
🆕 WallTime filter_neon[64] N/A 2.3 µs N/A
🆕 WallTime filter_neon[8] N/A 1.2 µs N/A
🆕 WallTime filter_neon[80] N/A 3 µs N/A
🆕 WallTime filter_neon[96] N/A 3.2 µs N/A
🆕 WallTime filter_neon[64] N/A 2.5 µs N/A
🆕 WallTime filter_neon[8] N/A 1.2 µs N/A
🆕 WallTime filter_neon[80] N/A 3.4 µs N/A
... ... ... ... ... ...

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 wm/fastlanes-sparse-extraction (9f1f51e) with develop (50cd6d7)

Open in CodSpeed

Footnotes

  1. 206 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. 4 benchmarks were run, but are now archived. If they were deleted in another branch, consider rebasing to remove them from the report. Instead if they were added back, click here to restore them. ↩

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