build: enable free-threaded wheels in cibuildwheel#121
Merged
CodSpeed HQ / CodSpeed Performance Analysis
failed
May 13, 2026
17 benchmarks regressed
⚠️ Different runtime environments detected
Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.
⚡ 30 improved benchmarks
❌ 13 regressed benchmarks
✅ 234 untouched benchmarks
Warning
Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ⚡ | WallTime | test_open_close_fd[10] |
99.2 µs | 93.2 µs | +6.45% |
| ⚡ | WallTime | test_fs_write[100] |
14.3 µs | 13.8 µs | +3.73% |
| ⚡ | WallTime | test_sum_of_squares[sum_of_squares_sum_labmda_product] |
295.6 µs | 281.2 µs | +5.12% |
| ⚡ | WallTime | test_make_bandpass |
5.7 µs | 5.5 µs | +2.21% |
| ⚡ | WallTime | test_make_highshelf |
8 µs | 7.8 µs | +2.6% |
| ❌ | WallTime | test_generate_all_permutations[sequence1] |
162.6 µs | 167.1 µs | -2.65% |
| ❌ | WallTime | test_generate_all_subsequences[sequence1] |
95.5 µs | 98.7 µs | -3.2% |
| ❌ | WallTime | test_minimax[scores0] |
7.7 µs | 8 µs | -3.05% |
| ⚡ | WallTime | test_mmap_operation[40960] |
49.9 µs | 48.6 µs | +2.64% |
| ⚡ | WallTime | test_multiprocessing_map[100] |
56.9 ms | 55.8 ms | +2.07% |
| ❌ | WallTime | test_noop_pass |
498.2 ns | 538 ns | -7.39% |
| ❌ | WallTime | test_array_alloc[100] |
1.1 µs | 1.2 µs | -3.57% |
| ⚡ | WallTime | test_generate_all_combinations[5-4] |
11.1 µs | 10.4 µs | +7.02% |
| ⚡ | WallTime | test_sudoku[initial_grid0] |
8.3 µs | 8.1 µs | +3.52% |
| ⚡ | WallTime | test_make_lowpass |
5.8 µs | 5.3 µs | +9.17% |
| ⚡ | WallTime | test_iir_filter_process |
3.2 µs | 3.1 µs | +4.04% |
| ⚡ | WallTime | test_make_peak |
7.1 µs | 6.4 µs | +9.93% |
| ⚡ | WallTime | test_open_close_fd[1000] |
9.4 ms | 9 ms | +4.21% |
| ❌ | WallTime | test_fs_write[10000] |
42.5 µs | 44.2 µs | -3.95% |
| ⚡ | WallTime | test_hostname_resolution[localhost] |
125.5 µs | 122.2 µs | +2.74% |
| ... | ... | ... | ... | ... | ... |
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 fix/freethreaded-wheels (8b581dd) with master (080d620)
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