dd: page-align read buffer #12143
Open
dd: page-align read buffer #12143
CodSpeed HQ / CodSpeed Performance Analysis
succeeded
May 4, 2026
Performance Gate Passed
⚠️ Different runtime environments detected
Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.
⚡ 9 improved benchmarks
✅ 302 untouched benchmarks
⏩ 46 skipped benchmarks1
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ⚡ | Memory | dd_copy_64k_blocks |
78.1 KB | 14.1 KB | ×5.5 |
| ⚡ | Memory | dd_copy_4k_blocks |
18.1 KB | 14.1 KB | +28.31% |
| ⚡ | Memory | dd_copy_with_seek |
18.4 KB | 14.4 KB | +27.71% |
| ⚡ | Memory | dd_copy_separate_blocks |
138.9 KB | 122.9 KB | +13.02% |
| ⚡ | Memory | dd_copy_partial |
18.1 KB | 14.1 KB | +28.29% |
| ⚡ | Memory | dd_copy_1m_blocks |
1,037.8 KB | 13.8 KB | ×75 |
| ⚡ | Memory | dd_copy_8k_blocks |
22.1 KB | 14.1 KB | +56.62% |
| ⚡ | Memory | dd_copy_default |
14.8 KB | 14.3 KB | +3.5% |
| ⚡ | Memory | dd_copy_with_skip |
18.4 KB | 14.4 KB | +27.71% |
Comparing chrboe:dd-iflag-direct-aligned-buffer (43a7e72) with main (379fbbb)
Footnotes
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46 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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