From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757512Ab0IGWzm (ORCPT ); Tue, 7 Sep 2010 18:55:42 -0400 Received: from mondschein.lichtvoll.de ([194.150.191.11]:59223 "EHLO mail.lichtvoll.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755614Ab0IGWzk (ORCPT ); Tue, 7 Sep 2010 18:55:40 -0400 From: Martin Steigerwald To: Alex Deucher Subject: Re: Bisecting radeon kms freeze bug: Almost there, please help with choosing next commit Date: Wed, 8 Sep 2010 00:55:08 +0200 User-Agent: KMail/1.13.5 (Linux/2.6.33-tp42-00028-g30d6c72; KDE/4.4.5; i686; ; ) Cc: Dave Airlie , linux-kernel@vger.kernel.org References: <201009071635.11110.Martin@lichtvoll.de> (sfid-20100908_004416_151529_6CE64D7B) In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart8395243.0ytDIrv5jT"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <201009080055.16598.Martin@lichtvoll.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --nextPart8395243.0ytDIrv5jT Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Am Dienstag 07 September 2010 schrieb Alex Deucher: > On Tue, Sep 7, 2010 at 10:34 AM, Martin Steigerwald=20 wrote: > > Hello Alex and und Dave, > >=20 > > please excuse typing errors. The machine is abysmally slow with that > > kernel. > >=20 > > 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 > >=20 > > martin@shambhala:~/Computer/Shambhala/Kernel/2.6.33-2.6.34- > > bisect/linux-2.6> git log | head > > commit 6ad86c311a8b8a6d856527a1b6ba21790ab7054b > > Author: Alex Deucher > > Date: Thu Feb 11 10:47:52 2010 -0500 > >=20 > > drm/radeon/kms: remove HDP flushes from fence emit (v2) > >=20 > > r600_ioctl_wait_idle() now handles this. > >=20 > > v2: update blit fence counts > >=20 > > Unfortunately it has some other issues that has been fixed later on > > prior to 2.6.34 already: > >=20 > > 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% > >=20 > > 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. >=20 > This might be a duplicate of: > https://bugs.freedesktop.org/show_bug.cgi?id=3D28402 > Does the patch there help? Which of the patches mentioned in the bug report? The ones mentioned in: https://bugs.freedesktop.org/show_bug.cgi?id=3D28402#c44 Or your patch from https://bugs.freedesktop.org/show_bug.cgi?id=3D28402#c47 ? I am already testing the next bisect kernel and I am quite close 10-15=20 commits in exactly the area described in the bug report. If=20 30d6c72c4a760cfc9069ee100786e4d6cf6de59d turns out to be good, like it=20 seems, then the issue must have been introduced between it and the sluggy=20 6ad86c311a8b8a6d856527a1b6ba21790ab7054b mentioned below. Thanks, Martin > Alex >=20 > > Here is excerpt from atop which shows ridicully high system CPU usage > > with that kernel. > >=20 > > 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 | > >=20 > > I wrote by mail since bugzilla has too many MySQL connections again. > > Maybe bug can be switched to mail? > >=20 > > 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 =2D-=20 Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 --nextPart8395243.0ytDIrv5jT Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEABECAAYFAkyGwswACgkQmRvqrKWZhMdT+gCeOT403L0F6dL5dpyT1k0XcI5v 2HsAmgJC13yi4m9eMJT/rzXwdw00BSoM =6vFa -----END PGP SIGNATURE----- --nextPart8395243.0ytDIrv5jT--