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perf[buffer]: iteration for fallible operations with validity#8120

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joseph-isaacs merged 27 commits into
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ji/fast-iter-valid
Jun 17, 2026
Merged

perf[buffer]: iteration for fallible operations with validity#8120
joseph-isaacs merged 27 commits into
developfrom
ji/fast-iter-valid

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CodSpeed HQ / CodSpeed Performance Analysis failed Jun 17, 2026

Performance Regression: -3.62%

⚠️ 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.

⚡ 8 improved benchmarks
❌ 12 regressed benchmarks
✅ 1524 untouched benchmarks
🆕 3 new benchmarks
⏩ 11 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 183 µs -34.05%
Simulation encode_varbin[(1000, 2)] 176.1 µs 237.1 µs -25.74%
Simulation take_10k_random 196.9 µs 255.6 µs -22.97%
Simulation patched_take_10k_contiguous_patches 230.6 µs 290.8 µs -20.69%
Simulation patched_take_10k_random 242.6 µs 302.8 µs -19.89%
Simulation chunked_varbinview_canonical_into[(1000, 10)] 161.8 µs 198 µs -18.28%
Simulation chunked_varbinview_into_canonical[(1000, 10)] 177.1 µs 213.5 µs -17.06%
Simulation bench_many_codes_few_values[1024] 393.2 µs 465.6 µs -15.55%
Simulation decompress_rd[f64, (100000, 0.0)] 845.5 µs 982.8 µs -13.97%
Simulation varbinview_large 112.2 µs 130.4 µs -13.97%
Simulation chunked_varbinview_canonical_into[(100, 100)] 273.8 µs 307.9 µs -11.08%
Simulation chunked_varbinview_into_canonical[(100, 100)] 326.4 µs 365 µs -10.58%
Simulation sum_i32_nullable_all_valid 69.2 µs 35.4 µs +95.64%
Simulation null_count_run_end[(10000, 4, 0.01)] 125.4 µs 91.6 µs +36.98%
Simulation encode_varbinview[(1000, 2)] 189 µs 157.1 µs +20.26%
Simulation chunked_varbinview_opt_into_canonical[(1000, 10)] 229.3 µs 192.7 µs +18.96%
Simulation and_bool_nullable 93.7 µs 82.6 µs +13.41%
Simulation baseline_lt[4, 1024] 78.5 µs 69.9 µs +12.23%
Simulation decompress_rd[f64, (100000, 0.01)] 981.2 µs 890.4 µs +10.2%
Simulation decompress_rd[f64, (100000, 0.1)] 981.2 µs 890.4 µs +10.19%
... ... ... ... ... ...

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 ji/fast-iter-valid (7ed76bc) with develop (679e2c5)2

Open in CodSpeed

Footnotes

  1. 11 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 (9f494a1) 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.