Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: Performance issue since 3.2.6 | Date | Mon, 21 Jan 2013 23:49:34 +0100 |
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On Monday, January 21, 2013 03:26:10 PM Olivier Doucet wrote: > >> FYI, I benchmarked a new version with : > >> CONFIG_PM_RUNTIME=y > >> CONFIG_PM=y > >> > >> but the performance loss is still present. > > > > In that case it is not quite likely that the commit you bisected to > > really introduced the problem, because it doesn't change things for > > CONFIG_PM=y. > > > > Does reverting that commit still help? > > I tested several combinations. Results follows : > 3.2.6 (base) + CONFIG_PM unset => BAD > 3.2.6 (base) + CONFIG_PM=y => BAD > 3.2.6 (base) + patch reverted + CONFIG_PM=y => BAD > 3.2.6 (base) + patch reverted + CONFIG_PM unset => GOOD
I see. Two bugs, then.
> So if I understand right, the targeted patch introduced the bug when > CONFIG_PM is unset, but there is an other bug when this var is set. > I'll try to track this commit.
Thanks a lot!
Rafael
-- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.
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