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gh-109653: Reduce import overhead of uuid module on Linux #115160

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Merged
hauntsaninja merged 2 commits into from
Mar 6, 2024
Merged

gh-109653: Reduce import overhead of uuid module on Linux #115160

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Reduce import overhead of uuid module
hauntsaninja Feb 8, 2024
4dda652
📜🤖 Added by blurb_it.
blurb-it[bot] Feb 8, 2024
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Reduce import overhead of uuid module 
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
```
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@hauntsaninja
hauntsaninja committed Feb 8, 2024
commit ed29bd6530247f3097eeb6c87a99b18d168e7720
5 changes: 4 additions & 1 deletion Lib/uuid.py
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Expand Up @@ -53,8 +53,11 @@
__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()
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