[Python-Dev] Current start-up times (original) (raw)
Brett Cannon brett at python.org
Fri Oct 18 19:46:21 CEST 2013
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tl;dr: 2.7 -> 3.3 = 1.92x slower 2.7 -> 3.4 = 1.36x slower 3.3 -> 3.4 = 1.40x faster
IOW the work people have been putting in to speed up interpreter startup are definitely paying off.
./perf.py -b normalstartup,startupnosite ../cpython/py3.3/python.exe ../cpython/default/python.exe Running normal_startup... INFO:root:Running
../cpython/default/python.exe -c1000 times INFO:root:Running../cpython/py3.3/python.exe -c1000 times Running startup_nosite... INFO:root:Running../cpython/default/python.exe -S -c2000 times INFO:root:Running../cpython/py3.3/python.exe -S -c2000 times
Report on Darwin bcannon-macbookpro2.roam.corp.google.com 12.5.0 Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64 x86_64 i386 Total CPU cores: 8
normal_startup
Min: 0.679865 -> 0.484924: 1.40x faster Avg: 0.696644 -> 0.497123: 1.40x faster Significant (t=47.03) Stddev: 0.02796 -> 0.01087: 2.5731x smaller
startup_nosite
Min: 0.297685 -> 0.285106: 1.04x faster Avg: 0.319151 -> 0.309291: 1.03x faster Significant (t=5.64) Stddev: 0.01219 -> 0.01252: 1.0272x larger
./perf.py -b normalstartup,startupnosite ../cpython/py2.7/python.exe ../cpython/default/python.exe Running normal_startup... INFO:root:Running
../cpython/default/python.exe -c1000 times INFO:root:Running../cpython/py2.7/python.exe -c1000 times Running startup_nosite... INFO:root:Running../cpython/default/python.exe -S -c2000 times INFO:root:Running../cpython/py2.7/python.exe -S -c2000 times
Report on Darwin bcannon-macbookpro2.roam.corp.google.com 12.5.0 Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64 x86_64 i386 Total CPU cores: 8
normal_startup
Min: 0.350003 -> 0.484200: 1.38x slower Avg: 0.362935 -> 0.492708: 1.36x slower Significant (t=-44.29) Stddev: 0.02021 -> 0.00459: 4.3999x smaller
startup_nosite
Min: 0.165302 -> 0.282765: 1.71x slower Avg: 0.169915 -> 0.293589: 1.73x slower Significant (t=-222.46) Stddev: 0.00273 -> 0.00484: 1.7705x larger
./perf.py -b normalstartup,startupnosite ../cpython/py2.7/python.exe ../cpython/py3.3/python.exe Running normal_startup... INFO:root:Running
../cpython/py3.3/python.exe -c1000 times INFO:root:Running../cpython/py2.7/python.exe -c1000 times Running startup_nosite... INFO:root:Running../cpython/py3.3/python.exe -S -c2000 times INFO:root:Running../cpython/py2.7/python.exe -S -c2000 times
Report on Darwin bcannon-macbookpro2.roam.corp.google.com 12.5.0 Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64 x86_64 i386 Total CPU cores: 8
normal_startup
Min: 0.350545 -> 0.675245: 1.93x slower Avg: 0.363317 -> 0.696069: 1.92x slower Significant (t=-120.97) Stddev: 0.01682 -> 0.00977: 1.7222x smaller
startup_nosite
Min: 0.166232 -> 0.289506: 1.74x slower Avg: 0.172511 -> 0.300979: 1.74x slower Significant (t=-209.92) Stddev: 0.00299 -> 0.00534: 1.7862x larger -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20131018/6e8e832a/attachment.html>
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