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Optimize buffer ops - #8322

Merged
AdamGS merged 11 commits into
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adamg/buffer-slice-fast
Jun 17, 2026
Merged

Optimize buffer ops#8322
AdamGS merged 11 commits into
developfrom
adamg/buffer-slice-fast

Merge branch 'develop' into adamg/buffer-slice-fast

4430546
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CodSpeed HQ / CodSpeed Performance Analysis failed Jun 17, 2026

12 benchmarks 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.

⚡ 22 improved benchmarks
❌ 12 regressed benchmarks
✅ 1498 untouched benchmarks
🆕 21 new benchmarks
⏩ 23 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
Simulation chunked_dict_primitive_into_canonical[u32, (1000, 10, 10)] 120.7 µs 180.7 µs -33.2%
Simulation encode_varbin[(1000, 2)] 176.1 µs 234.6 µs -24.95%
Simulation bitwise_not_vortex_buffer_mut[128] 186.1 ns 244.4 ns -23.86%
Simulation bitwise_not_vortex_buffer_mut[1024] 246.4 ns 304.7 ns -19.14%
Simulation decompress_rd[f64, (100000, 0.0)] 845.5 µs 1,025.5 µs -17.55%
Simulation chunked_varbinview_into_canonical[(1000, 10)] 177.1 µs 213.9 µs -17.21%
Simulation bench_many_codes_few_values[1024] 393.2 µs 467.5 µs -15.87%
Simulation decompress_rd[f32, (100000, 0.0)] 499.1 µs 587.7 µs -15.06%
Simulation varbinview_large 112.2 µs 130.9 µs -14.33%
Simulation bitwise_not_vortex_buffer_mut[2048] 369.4 ns 427.8 ns -13.64%
Simulation set_indices_arrow_buffer[128] 951.9 ns 1,068.6 ns -10.92%
Simulation map_new_output[128] 731.1 ns 818.6 ns -10.69%
Simulation slice_empty_vortex 2,628.6 ns 368.3 ns ×7.1
Simulation sum_i32_nullable_all_valid 69.2 µs 35.2 µs +96.74%
Simulation slice_vortex_buffer[1024] 1,305.8 ns 871.4 ns +49.86%
Simulation slice_vortex_buffer[16384] 1,305.8 ns 871.4 ns +49.86%
Simulation slice_vortex_buffer[2048] 1,305.8 ns 871.4 ns +49.86%
Simulation slice_vortex_buffer[128] 1,305.8 ns 871.4 ns +49.86%
Simulation slice_vortex_buffer[65536] 1,305.8 ns 871.4 ns +49.86%
Simulation null_count_run_end[(10000, 4, 0.01)] 125.4 µs 91.7 µs +36.74%
... ... ... ... ... ...

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 adamg/buffer-slice-fast (4430546) with develop (679e2c5)2

Open in CodSpeed

Footnotes

  1. 23 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. No successful run was found on develop (cb82828) during the generation of this report, so 679e2c5 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report.