feat: chunk list elements + bounded sub-range reader - #8678
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CodSpeed HQ / CodSpeed Performance Analysis
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Jul 7, 2026 in 0s
3 benchmarks regressed
⚡ 9 improved benchmarks
❌ 3 regressed benchmarks
✅ 1595 untouched benchmarks
⏩ 42 skipped benchmarks1
Warning
Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ❌ | Simulation | bench_many_codes_few_values[1024] |
364.2 µs | 539.7 µs | -32.52% |
| ❌ | Simulation | chunked_varbinview_canonical_into[(1000, 10)] |
154 µs | 191 µs | -19.38% |
| ❌ | Simulation | bitwise_not_vortex_buffer_mut[128] |
215.3 ns | 244.4 ns | -11.93% |
| ⚡ | Simulation | extend_from_array_zctl[(1000, 8)] |
408.4 µs | 239.6 µs | +70.45% |
| ⚡ | Simulation | extend_from_array_non_zctl_overlapping[(1000, 8)] |
436.3 µs | 271.4 µs | +60.74% |
| ⚡ | Simulation | extend_from_array_non_zctl_overlapping[(1000, 32)] |
894.4 µs | 734.7 µs | +21.73% |
| ⚡ | Simulation | extend_from_array_zctl[(1000, 64)] |
1.2 ms | 1 ms | +16.2% |
| ⚡ | Simulation | sum_i32_nullable_all_valid |
42 µs | 37.2 µs | +12.68% |
| ⚡ | Simulation | extend_from_array_zctl[(10000, 8)] |
2.2 ms | 1.9 ms | +12.06% |
| ⚡ | Simulation | extend_from_array_non_zctl_overlapping[(10000, 8)] |
2.5 ms | 2.2 ms | +11.91% |
| ⚡ | Simulation | chunked_varbinview_opt_canonical_into[(100, 100)] |
340.6 µs | 305.6 µs | +11.46% |
| ⚡ | Simulation | i32_small_overlapping |
44.7 µs | 40.2 µs | +11.28% |
Tip
Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.
Comparing mk/list-chunked-elements (284cf25) with mk/add-list-layout (fc7ed0a)
Footnotes
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42 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. ↩
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