CodSpeed / CodSpeed Performance Analysis
failed
May 29, 2026 in 0s
24 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.
⚡ 18 improved benchmarks
❌ 22 regressed benchmarks
✅ 237 untouched benchmarks
🆕 12 new benchmarks
Warning
Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| 🆕 | WallTime | import rich |
N/A | 57.3 ms | N/A |
| 🆕 | WallTime | import pytest_codspeed |
N/A | 403.6 ms | N/A |
| 🆕 | WallTime | import pytest |
N/A | 393.7 ms | N/A |
| 🆕 | WallTime | import pytest_codspeed.plugin |
N/A | 403.9 ms | N/A |
| 🆕 | WallTime | import pluggy |
N/A | 110.3 ms | N/A |
| 🆕 | WallTime | python startup |
N/A | 37.5 ms | N/A |
| ❌ | WallTime | test_multiprocessing_map[10000] |
84.3 ms | 108.2 ms | -22.12% |
| ⚡ | WallTime | test_fs_read[1000] |
879.2 ns | 861 ns | +2.11% |
| ⚡ | WallTime | test_sum_of_squares[sum_of_squares_sum_comprehension_product] |
201.3 µs | 197.2 µs | +2.08% |
| ❌ | WallTime | test_hostname_resolution[localhost] |
121.2 µs | 124 µs | -2.23% |
| ⚡ | WallTime | test_threadpool_map[10] |
2.4 ms | 2.3 ms | +3.12% |
| ⚡ | WallTime | test_tcp_connection[google.com-443] |
1.2 ms | 1.2 ms | +6.35% |
| ❌ | WallTime | test_match_word_pattern[aba-GraphTreesGraph] |
106.3 µs | 108.7 µs | -2.2% |
| ⚡ | WallTime | test_noop_pass |
533.8 ns | 510.7 ns | +4.51% |
| ❌ | WallTime | test_generate_all_permutations[sequence1] |
163.8 µs | 171.6 µs | -4.5% |
| ❌ | WallTime | test_open_close_fd[10] |
92.1 µs | 94.5 µs | -2.56% |
| ❌ | WallTime | test_make_bandpass |
5.5 µs | 5.6 µs | -2.32% |
| ❌ | WallTime | test_mmap_operation[40960] |
48.2 µs | 51.5 µs | -6.33% |
| ❌ | WallTime | test_generate_all_subsequences[sequence1] |
97.3 µs | 100.4 µs | -3.05% |
| ⚡ | WallTime | test_multiprocessing_map[100] |
57.7 ms | 56.4 ms | +2.33% |
| ... | ... | ... | ... | ... | ... |
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 ci/import-time-benchmarks (7c66604) with master (b2d12d8)
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