Hello, Le 03/03/2017 à 08:27, Nick Coghlan a écrit : > On 2 March 2017 at 07:00, Victor Stinner <[email protected] > <mailto:[email protected]>> 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. > >
This was 'almost' intentional, as no specific O/S tuning was done. The intent is to compare performance between two specific versions of the interperter, not to target any gain in performance. Such tuning would suposedly have a linear impact on both version. If not, then the compiler definitively does some funky things that I want to be aware of. > 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. > Now this is an interesting test that I can probably do myself to a certain extent using containers and/or VM on the same hardware. While it will be no mean a strong validation of the performances, I may be able to confirm a similar trend in the results before going forward with tests on baremetal. > Cheers, > Nick. > Thanks, ...Louis -- Louis Bouchard Software engineer, Cloud & Sustaining eng. Canonical Ltd Ubuntu developer Debian Maintainer GPG : 429D 7A3B DD05 B6F8 AF63 B9C4 8B3D 867C 823E 7A61 _______________________________________________ Python-Dev mailing list [email protected] https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com