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Author methane
Recipients Louis Huemiller, methane
Date 2019-10-16.06:34:39
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1571207680.02.0.414718143735.issue38477@roundup.psfhosted.org>
In-reply-to
Content 
I can not confirm performance regression in 3.8.0.

$ time ~/pyenv/versions/3.7.3/bin/python permutations2x2 --max_depth 6 | egrep "^# Total_Time" ; time ~/pyenv/versions/3.8.0/bin/python permutations2x2 --max_depth 6 | egrep "^# Total_Time"
# Total_Time: 50.24

real    0m50.665s                                                                                                                                                                                                                                                             user    0m49.729s
sys     0m4.354s
# Total_Time: 47.97

real    0m48.502s
user    0m47.380s
sys     0m4.506s

I suspect that this is a binary specific issue.

Would you try "perf record python ..."?
History
Date User Action Args
2019-10-16 06:34:40methanesetrecipients: + methane, Louis Huemiller
2019-10-16 06:34:40methanesetmessageid: <1571207680.02.0.414718143735.issue38477@roundup.psfhosted.org>
2019-10-16 06:34:40methanelinkissue38477 messages
2019-10-16 06:34:39methanecreate