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perf: batch fragmented CASE branch execution - #9820

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perf: batch fragmented CASE branch execution#9820
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ngates/batched-case-execution

Batch fragmented CASE branches and push selections before scalar exec…

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CodSpeed HQ / CodSpeed Performance Analysis failed Sep 9, 2026

19 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.

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

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⚡ 27 improved benchmarks
❌ 19 regressed benchmarks
✅ 2147 untouched benchmarks
🆕 12 new benchmarks
⏩ 218 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
❌ Simulation case_when_nary_10_conditions[1000] 285 µs 404.6 µs -29.55%
❌ Simulation random_i8[0.5] 67.9 µs 93.3 µs -27.25%
❌ Simulation take_filter_primitive_nullable_slice_mask_random_indices[4096, 1000] 100.9 µs 131 µs -22.99%
❌ Simulation case_when_nary_equality_lookup[1000] 246.4 µs 317.3 µs -22.34%
❌ Simulation filter_list_primitive_short[Sparse] 132.2 µs 168.9 µs -21.74%
❌ Simulation filter_list_primitive_wide[Sparse] 133.3 µs 169.2 µs -21.23%
❌ Simulation take_filter_primitive_nullable_slice_mask_random_indices[16384, 1000] 119.5 µs 150.9 µs -20.85%
❌ Simulation filter_list_primitive_short[Clustered] 134.2 µs 168.6 µs -20.4%
❌ Simulation case_when_nary_3_conditions[1000] 174.9 µs 219.2 µs -20.23%
❌ Simulation case_when_nary_early_dominant[1000] 174.8 µs 216.1 µs -19.1%
❌ Simulation filter_list_primitive_short[Prefix] 137.8 µs 169.8 µs -18.87%
❌ Simulation filter_list_primitive_wide[Clustered] 137.6 µs 169.4 µs -18.79%
❌ Simulation case_when_nary_equality_lookup[10000] 390.2 µs 480 µs -18.71%
❌ Simulation filter_list_primitive_wide[Prefix] 138 µs 169.3 µs -18.48%
❌ Simulation filter_powerlaw_by_random[10000] 32.3 µs 37.9 µs -14.66%
❌ Simulation take_filter_primitive_slice_mask_sequential_indices[16384, 1000] 53.7 µs 61.5 µs -12.69%
❌ Simulation filter_ultra_sparse[250000] 74.3 µs 84.7 µs -12.3%
❌ WallTime mul_u32_nonnull_avx512 5.6 µs 6.3 µs -12.13%
❌ Simulation case_when_without_else[10000] 211.7 µs 237.8 µs -10.99%
⚡ Simulation density_sweep_single_slice[0.9999] 84.2 µs 27.3 µs ×3.1
... ... ... ... ... ...

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

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Comparing ngates/batched-case-execution (2ae4de6) with develop (9d1b103)

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Footnotes

  1. 218 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. ↩

View more details on CodSpeed HQ