fastlanes: bit-packed compare-constant fast path + bitpack_constant kernel#8013
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joseph-isaacs wants to merge 8 commits into
Closed
fastlanes: bit-packed compare-constant fast path + bitpack_constant kernel#8013joseph-isaacs wants to merge 8 commits into
joseph-isaacs wants to merge 8 commits into
CodSpeed HQ / CodSpeed Performance Analysis
failed
Jun 2, 2026 in 0s
5 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.
⚡ 9 improved benchmarks
❌ 5 regressed benchmarks
✅ 1261 untouched benchmarks
🆕 16 new benchmarks
Warning
Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ❌ | Simulation | baseline_lt[16, 65536] |
217.6 µs | 303 µs | -28.19% |
| ❌ | Simulation | baseline_eq[4, 65536] |
185 µs | 243 µs | -23.86% |
| ❌ | Simulation | baseline_lt[4, 65536] |
200.8 µs | 258 µs | -22.17% |
| ❌ | Simulation | baseline_eq[16, 65536] |
229.9 µs | 287.8 µs | -20.13% |
| ❌ | Simulation | chunked_varbinview_canonical_into[(1000, 10)] |
162.1 µs | 198.2 µs | -18.2% |
| ⚡ | Simulation | fast_eq_out_of_range[16, 65536] |
225.1 µs | 36.2 µs | ×6.2 |
| ⚡ | Simulation | fast_lt_out_of_range[16, 65536] |
207.8 µs | 36.5 µs | ×5.7 |
| ⚡ | Simulation | fast_lt_out_of_range[4, 65536] |
190.7 µs | 35.8 µs | ×5.3 |
| ⚡ | Simulation | fast_eq_out_of_range[4, 65536] |
174.6 µs | 36.1 µs | ×4.8 |
| ⚡ | Simulation | fast_lt_out_of_range[4, 1024] |
37.9 µs | 26.5 µs | +42.93% |
| ⚡ | Simulation | baseline_lt[4, 1024] |
78.9 µs | 63.2 µs | +24.81% |
| ⚡ | Simulation | fast_lt_out_of_range[16, 1024] |
31.8 µs | 26.6 µs | +19.76% |
| ⚡ | Simulation | fast_eq_out_of_range[16, 1024] |
32.1 µs | 27.7 µs | +15.71% |
| ⚡ | Simulation | fast_eq_out_of_range[4, 1024] |
31.4 µs | 27.7 µs | +13.17% |
| 🆕 | Simulation | full_encode[16, 65536] |
N/A | 358 µs | N/A |
| 🆕 | Simulation | in_range_eq[4, 1024] |
N/A | 30.8 µs | N/A |
| 🆕 | Simulation | in_range_eq[16, 1024] |
N/A | 31 µs | N/A |
| 🆕 | Simulation | in_range_eq_baseline[4, 1024] |
N/A | 83.5 µs | N/A |
| 🆕 | Simulation | full_encode[4, 1024] |
N/A | 19.1 µs | N/A |
| 🆕 | Simulation | in_range_eq[16, 65536] |
N/A | 156.4 µs | N/A |
| ... | ... | ... | ... | ... | ... |
ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.
Tip
Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.
Comparing claude/bitpack-compare-speedup-KGPS3 (940b84d) with develop (7de53da)1
Footnotes
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