Ubuntu 16.04 speed issues
I've a niggling feeling there was discussion about some performance drops on 16.04 not all that long ago, but I'm completely failing to find it in my emails.
The OpenStack-Ansible project has noticed that performance on Ubuntu 16.04 is quite significantly slower than on 14.04. At the moment it's looking like *possibly* a GCC related bug.
https://bugs.launchpad.net/ubuntu/+source/python2.7/+bug/1638695
Hello,
The OpenStack-Ansible project has noticed that performance on Ubuntu 16.04 is quite significantly slower than on 14.04. At the moment it's looking like *possibly* a GCC related bug.
Is it exactly the same Python version? What is the full version?
Try to get compiler flags:
python2 -c 'import sysconfig; print(sysconfig.get_config_var("CFLAGS"))'
2016-11-10 18:01 GMT+01:00 Paul Graydon <paul@paulgraydon.co.uk>:
I've a niggling feeling there was discussion about some performance drops on 16.04 not all that long ago, but I'm completely failing to find it in my emails.
You might run https://github.com/python/performance on Ubuntu 14.04 and 16.04 on the same hardware, or at least similar hardware, to compare performance.
Victor
On 11 November 2016 at 03:01, Paul Graydon <paul@paulgraydon.co.uk> wrote:
I've a niggling feeling there was discussion about some performance drops on 16.04 not all that long ago, but I'm completely failing to find it in my emails.
You may be thinking of the PGO-related issue that Victor found on *14*.04: https://mail.python.org/pipermail/speed/2016-November/000471.html
Cheers, Nick.
-- Nick Coghlan | ncoghlan@gmail.com | Brisbane, Australia
participants (3)
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Nick Coghlan -
Paul Graydon -
Victor Stinner