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

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CodSpeed HQ / CodSpeed Performance Analysis failed May 27, 2026

Performance Regression: -16.42%

⚠️ 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.

⚠️ 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

❌ 1 regressed benchmark
✅ 1264 untouched benchmarks
🆕 16 new benchmarks
⏩ 1 skipped benchmark1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
🆕 Simulation cast_u16_to_u32[65536] N/A 210.2 µs N/A
❌ Simulation chunked_varbinview_opt_canonical_into[(1000, 10)] 187.9 µs 224.8 µs -16.42%
🆕 Simulation cast_i32_to_u32[65536] N/A 832.5 µs N/A
🆕 Simulation cast_u32_to_u8[65536] N/A 286 µs N/A
🆕 Simulation map_with_mask_widen_u16_u32_zero_nulls[65536] N/A 212.4 µs N/A
🆕 Simulation try_map_with_mask_narrow_u64_u32_ignoring_valid[65536] N/A 429.9 µs N/A
🆕 Simulation arrow_cast_narrow_u64_u32[65536] N/A 777.1 µs N/A
🆕 Simulation map_no_validity_widen_u16_u32[65536] N/A 189.7 µs N/A
🆕 Simulation map_with_mask_in_place_u32_zero_nulls[65536] N/A 153.4 µs N/A
🆕 Simulation bitpack_value_only[65536] N/A 452 µs N/A
🆕 Simulation try_map_no_validity_narrow_u64_u32[65536] N/A 424.1 µs N/A
🆕 Simulation try_map_with_mask_narrow_u64_u32_lazy_validity[65536] N/A 494.2 µs N/A
🆕 Simulation arrow_cast_widen_u16_u32[65536] N/A 496.3 µs N/A
🆕 Simulation try_map_with_mask_narrow_u64_u32_value_only_filtered[65536] N/A 429.8 µs N/A
🆕 Simulation try_map_with_mask_in_place_u32_checked_mul[65536] N/A 147.3 µs N/A
🆕 Simulation try_map_with_mask_widen_u16_u32_or_else[65536] N/A 190 µs N/A
🆕 Simulation try_map_with_mask_widen_u16_u32_maskless[65536] N/A 190 µs N/A

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 (aa8a6d1) with develop (87273dc)

Open in CodSpeed

Footnotes

  1. 1 benchmark was skipped, so the baseline result was used instead. If it was deleted from the codebase, click here and archive it to remove it from the performance reports. ↩

View more details on CodSpeed HQ