Message 285200 - Python tracker

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Author	vstinner
Recipients	python-dev, serhiy.storchaka, vstinner, xiang.zhang
Date	2017-01-11.08:04:18
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1484121858.68.0.912190416951.issue28870@psf.upfronthosting.co.za>
In-reply-to

Content
I also ran the reliable performance benchmark suite with LTO+PGO. There is no significant performance change on these benchmarks: https://speed.python.org/changes/?rev=b9404639a18c&exe=5&env=speed-python The largest change is on scimark_lu (-13%), but there was an hiccup on the previous change which is probably a small unstability in the benchmark. It's not a speedup of these changes. The second largest change is on spectral_norm: +9%. But this benchmark is known to be unstable, there was already a small peak previously. Again, I don't think that it's related to the changes.

I also ran the reliable performance benchmark suite with LTO+PGO. There is no significant performance change on these benchmarks:
https://speed.python.org/changes/?rev=b9404639a18c&exe=5&env=speed-python

The largest change is on scimark_lu (-13%), but there was an hiccup on the previous change which is probably a small unstability in the benchmark. It's not a speedup of these changes.

The second largest change is on spectral_norm: +9%. But this benchmark is known to be unstable, there was already a small peak previously. Again, I don't think that it's related to the changes.

History
Date	User	Action	Args
2017-01-11 08:04:18	vstinner	set	recipients: + vstinner, python-dev, serhiy.storchaka, xiang.zhang
2017-01-11 08:04:18	vstinner	set	messageid: <1484121858.68.0.912190416951.issue28870@psf.upfronthosting.co.za>
2017-01-11 08:04:18	vstinner	link	issue28870 messages
2017-01-11 08:04:18	vstinner	create