BitPacked row-encode kernel (vortex-fastlanes) #8009
Closed
CodSpeed HQ / CodSpeed Performance Analysis
failed
May 18, 2026
1 benchmark regressed
⚠️ Unknown Walltime execution environment detected
Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.
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⚡ 2 improved benchmarks
❌ 1 regressed benchmark
✅ 1218 untouched benchmarks
Warning
Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ❌ | Simulation | chunked_varbinview_canonical_into[(100, 100)] |
273.3 µs | 309 µs | -11.56% |
| ⚡ | Simulation | chunked_varbinview_canonical_into[(1000, 10)] |
197.9 µs | 161.9 µs | +22.25% |
| ⚡ | Simulation | chunked_varbinview_into_canonical[(100, 100)] |
358.4 µs | 325 µs | +10.26% |
Tip
Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.
Comparing claude/row-c24-bitpacked-kernel (f46aefd) with develop (faf7e42)1
Footnotes
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