[Python-Dev] Help requested with Python 2.7 performance regression (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Fri Mar 3 02:27:08 EST 2017

On 2 March 2017 at 07:00, Victor Stinner <victor.stinner at gmail.com> wrote:

Hi,

Your document doesn't explain how you configured the host to run benchmarks. Maybe you didn't tune Linux or anything else? Be careful with modern hardware which can make funny (or not) surprises.

Victor, do you know if you or anyone else has compared the RHEL/CentOS 7.x binaries (Python 2.7.5 + patches, built with GCC 4.8.x) with the Fedora 25 binaries (Python 2.7.13 + patches, built with GCC 6.3.x)?

I know you've been using perf to look for differences between Python major versions, but this would be more about using Python's benchmark suite to investigate the performance of gcc, since it appears that may be the culprit here.

Cheers, Nick.

-- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20170303/c2d62b7a/attachment.html>

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