feat: teach ArrayStream instrument(span) #7741
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CodSpeed HQ / CodSpeed Performance Analysis
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Apr 30, 2026
Performance Regression: -38.78%
⚠️ 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.
⚡ 2 improved benchmarks
❌ 4 regressed benchmarks
✅ 1192 untouched benchmarks
⚠️ Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ❌ | WallTime | mix[50%_in/50%_out] |
340 µs | 395.3 µs | -13.99% |
| ❌ | WallTime | for[10M_u8] |
75.4 µs | 123.2 µs | -38.78% |
| ❌ | WallTime | for[10M_u16] |
95.6 µs | 151.6 µs | -36.95% |
| ❌ | WallTime | mix[100%_in/0%_out] |
452.6 µs | 505.9 µs | -10.53% |
| ⚡ | WallTime | runend[10M_i32_runlen_100000] |
130 µs | 91.1 µs | +42.7% |
| ⚡ | WallTime | 10M_50%[5000000] |
192.3 µs | 153.4 µs | +25.35% |
Comparing dk/instrumented-array-stream (bc3b8f5) with develop (deb7de0)
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