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try read_ranges IO - #8670

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adamg/pread-like-api
Closed

try read_ranges IO#8670
AdamGS wants to merge 4 commits into
developfrom
adamg/pread-like-api

minimize dashmap contention

235c03a
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CodSpeed HQ / CodSpeed Performance Analysis failed Jul 7, 2026

2 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.

⚡ 5 improved benchmarks
❌ 2 regressed benchmarks
✅ 1638 untouched benchmarks
⏩ 4 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
Simulation chunked_varbinview_into_canonical[(1000, 10)] 170.1 µs 206.5 µs -17.64%
Simulation compact[(4096, 90)] 750.6 ns 838.1 ns -10.44%
Simulation bitwise_not_vortex_buffer_mut[128] 273.6 ns 215.3 ns +27.1%
Simulation chunked_varbinview_canonical_into[(1000, 10)] 190.5 µs 154.2 µs +23.51%
Simulation bitwise_not_vortex_buffer_mut[1024] 333.9 ns 275.6 ns +21.17%
Simulation bitwise_not_vortex_buffer_mut[2048] 427.8 ns 369.4 ns +15.79%
Simulation chunked_varbinview_into_canonical[(100, 100)] 307.7 µs 272.7 µs +12.84%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.


Comparing adamg/pread-like-api (235c03a) with develop (0d50342)

Open in CodSpeed

Footnotes

  1. 4 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.