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| author | Shantanu <12621235+hauntsaninja@users.noreply.github.com> | 2024-03-06 22:39:43 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-03-06 22:39:43 (GMT) |
| commit | 68b8ffff8c4b20d2f46b708b1a7906377ecc255f (patch) | |
| tree | 489afdf2dd9810a93ba4eb9ad182e1ac38193f8d | |
| parent | 0876b921b28bb14e3fa61b188e52fc9b4c77cb1a (diff) | |
| download | cpython-68b8ffff8c4b20d2f46b708b1a7906377ecc255f.zip cpython-68b8ffff8c4b20d2f46b708b1a7906377ecc255f.tar.gz cpython-68b8ffff8c4b20d2f46b708b1a7906377ecc255f.tar.bz2 | |
gh-109653: Reduce import overhead of uuid module on Linux (#115160)
This follows in the footsteps of #21586
This speeds up import uuid by about 6ms on Linux.
Before:
```
λ hyperfine -w 4 "./python -c 'import uuid'"
Benchmark 1: ./python -c 'import uuid'
Time (mean ± σ): 20.4 ms ± 0.4 ms [User: 16.7 ms, System: 3.8 ms]
Range (min … max): 19.6 ms … 21.8 ms 136 runs
```
After:
```
λ hyperfine -w 4 "./python -c 'import uuid'"
Benchmark 1: ./python -c 'import uuid'
Time (mean ± σ): 14.5 ms ± 0.3 ms [User: 11.5 ms, System: 3.2 ms]
Range (min … max): 13.9 ms … 16.0 ms 175 runs
```
| -rw-r--r-- | Lib/uuid.py | 5 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Documentation/2024-02-08-08-51-37.gh-issue-109653.QHLW4w.rst | 1 |
2 files changed, 5 insertions, 1 deletions
diff --git a/Lib/uuid.py b/Lib/uuid.py index 470bc0d..d4e486d 100644 --- a/Lib/uuid.py +++ b/Lib/uuid.py @@ -53,8 +53,11 @@ from enum import Enum, _simple_enum __author__ = 'Ka-Ping Yee <ping@zesty.ca>' # The recognized platforms - known behaviors -if sys.platform in ('win32', 'darwin', 'emscripten', 'wasi'): +if sys.platform in {'win32', 'darwin', 'emscripten', 'wasi'}: _AIX = _LINUX = False +elif sys.platform == 'linux': + _LINUX = True + _AIX = False else: import platform _platform_system = platform.system() diff --git a/Misc/NEWS.d/next/Documentation/2024-02-08-08-51-37.gh-issue-109653.QHLW4w.rst b/Misc/NEWS.d/next/Documentation/2024-02-08-08-51-37.gh-issue-109653.QHLW4w.rst new file mode 100644 index 0000000..97e0c8d --- /dev/null +++ b/Misc/NEWS.d/next/Documentation/2024-02-08-08-51-37.gh-issue-109653.QHLW4w.rst @@ -0,0 +1 @@ +Improve import time of :mod:`uuid` on Linux. |