Messages in this thread |  | | | Date | Tue, 7 Sep 2010 14:34:25 -0400 | | Subject | Re: Bisecting radeon kms freeze bug: Almost there, please help with choosing next commit | | From | Alex Deucher <> |
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On Tue, Sep 7, 2010 at 10:34 AM, Martin Steigerwald <Martin@lichtvoll.de> wrote: > > Hello Alex and und Dave, > > please excuse typing errors. The machine is abysmally slow with that > kernel. > > I am almost there with bisecting Bug 16376, random - possibly Radeon DRM > KM related - freezes. I think I found the merge where is issue has been > introduced and I am now testing > > martin@shambhala:~/Computer/Shambhala/Kernel/2.6.33-2.6.34- > bisect/linux-2.6> git log | head > commit 6ad86c311a8b8a6d856527a1b6ba21790ab7054b > Author: Alex Deucher <alexdeucher@gmail.com> > Date: Thu Feb 11 10:47:52 2010 -0500 > > drm/radeon/kms: remove HDP flushes from fence emit (v2) > > r600_ioctl_wait_idle() now handles this. > > v2: update blit fence counts > > Unfortunately it has some other issues that has been fixed later on prior > to 2.6.34 already: > > 7.9.2010 - 2.6.32-tp42-00514-g6ad86c3 > 6ad86c311a8b8a6d856527a1b6ba21790ab7054b > - Sluggy desktop. Short pauses, locks of about a second. > - Slow scroll performance on tty. > - No complete freeze yet. > - Much CPU time used in system:70-90% > > You know the changes in that merge better than me. Can you recommend which > commits to test next? Som commits may require other ones and thus it might > be wise to choose the next commits with that in mind. Maybe you already > have an idea which one it could be. I thought about the memory controllr > v2 changes, but I really don't have the foggiest.
This might be a duplicate of: https://bugs.freedesktop.org/show_bug.cgi?id=28402 Does the patch there help?
Alex
> > > Here is excerpt from atop which shows ridicully high system CPU usage with > that kernel. > > ATOP - shambhala 2010/09/07 16:11:22 10 seconds > elapsed > PRC | sys 8.66s | user 1.30s | #proc 195 | #zombie 0 | #exit > 0 | > CPU | sys 85% | user 11% | irq 4% | idle 0% | wait > 0% | > CPL | avg1 3.39 | avg5 3.80 | avg15 3.25 | csw 18458 | intr > 11472 | > MEM | tot 2.0G | free 543.1M | cache 759.6M | buff 95.0M | slab > 37.8M | > SWP | tot 3.8G | free 3.8G | | vmcom 1.3G | vmlim > 4.8G | > DSK | sda | busy 3% | read 1 | write 95 | avio 2 > ms | > > I wrote by mail since bugzilla has too many MySQL connections again. Maybe > bug can be switched to mail? > > Rebooting and testing this kernel another time whether it hard freezes, > -- > Martin 'Helios' Steigerwald - http://www.Lichtvoll.de > GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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