Messages in this thread | | | Date | Thu, 27 Mar 2008 10:17:14 +0100 | From | Ingo Molnar <> | Subject | Re: Serious performance regression in Wine applications and Linux 2.6.24.* |
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* Kai <epimetreus@fastmail.fm> wrote:
> The issue only shows with Age of Wonders II and AoW Shadow Magic. > > Every version of wine from 0.9.55 to 0.9.58, including several > intermediate git builds. > > Xorg version 1.4.0.90, and a couple other versions (the problems has > persisted across a couple updates of Xorg) > > Hardware rendering; using the prop. nV driver; updating that also > doesn't affect the issue, nor does retaining the same version.
could you run this script while such a slowdown is really prominent:
http://people.redhat.com/mingo/cfs-scheduler/tools/cfs-debug-info.sh
and send me the output it generates? The output is the most useful if you do this on a kernel that has CONFIG_SCHED_DEBUG=y and CONFIG_SCHEDSTATS=y enabled.
on the off chance that this issue has been fixed in the soon-to-be 2.6.25 kernel, you might also want to try x86.git/latest, which is based on the latest Linus tree and has all relevant x86 fixes and improvements added as well:
http://people.redhat.com/mingo/x86.git/README
several of the changes can affect performance.
a third (and most comprehensive) way to debug this would be to send me a scheduler trace of such a slowdown, you can generate a scheduler trace the following way:
http://people.redhat.com/mingo/sched-devel.git/readme-tracer.txt
but we can probably give a first estimation based on the cfs-debug-info output already. Btw., you can combine the scheduler and the x86 git tree into a temporary unified tree by doing these two commands:
git-checkout -b tmp x86/latest git-merge sched-devel/latest
(run "make oldconfig" to pick up the new config options.)
Ingo
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