From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.sourceforge.net
Subject: [Bug 15328] high load avg, extreme sluggishness on T41 w/ Radeon Mobility M7
Date: Tue, 16 Feb 2010 21:24:33 GMT [thread overview]
Message-ID: <201002162124.o1GLOXmV025187@demeter.kernel.org> (raw)
In-Reply-To: <bug-15328-2300@http.bugzilla.kernel.org/>
http://bugzilla.kernel.org/show_bug.cgi?id=15328
--- Comment #3 from Thomas Hellstrom <thellstrom@vmware.com> 2010-02-16 21:24:27 ---
Really, The Radeon driver *should* never change caching policy from WC to UC,
and thus never hit the code path affected by that patch. However if it does,
and particularly if it does frequently it's quite natural that the patch causes
severe CPU overhead since transition from WC->WB->UC causes a cache flush
whereas WC->UC doesn't.
Maybe Jerome has some input?
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next prev parent reply other threads:[~2010-02-16 21:24 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-16 20:25 [Bug 15328] New: high load avg, extreme sluggishness on T41 w/ Radeon Mobility M7 bugzilla-daemon
2010-02-16 20:36 ` [Bug 15328] " bugzilla-daemon
2010-02-16 20:43 ` bugzilla-daemon
2010-02-16 21:24 ` bugzilla-daemon [this message]
2010-02-17 22:06 ` bugzilla-daemon
2010-02-17 22:25 ` bugzilla-daemon
2010-02-18 2:00 ` bugzilla-daemon
2010-02-18 15:45 ` bugzilla-daemon
2010-02-18 17:02 ` bugzilla-daemon
2010-02-18 18:53 ` bugzilla-daemon
2010-02-18 19:15 ` bugzilla-daemon
2010-02-19 14:24 ` bugzilla-daemon
2010-02-19 15:01 ` bugzilla-daemon
2010-02-19 16:49 ` bugzilla-daemon
2010-02-19 18:47 ` bugzilla-daemon
2010-02-19 22:35 ` bugzilla-daemon
2010-02-19 22:49 ` bugzilla-daemon
2010-02-19 23:36 ` bugzilla-daemon
2010-02-19 23:44 ` bugzilla-daemon
2010-02-19 23:49 ` bugzilla-daemon
2010-02-20 0:03 ` bugzilla-daemon
2010-02-22 21:42 ` bugzilla-daemon
-- strict thread matches above, loose matches on Subject: below --
2010-03-21 20:27 2.6.34-rc2: Reported regressions 2.6.32 -> 2.6.33 Rafael J. Wysocki
2010-03-21 20:30 ` [Bug #15328] high load avg, extreme sluggishness on T41 w/ Radeon Mobility M7 Rafael J. Wysocki
2010-03-21 20:30 ` Rafael J. Wysocki
2010-04-08 22:54 2.6.34-rc3-git8: Reported regressions 2.6.32 -> 2.6.33 Rafael J. Wysocki
2010-04-08 23:04 ` [Bug #15328] high load avg, extreme sluggishness on T41 w/ Radeon Mobility M7 Rafael J. Wysocki
[not found] <bug-15328-2300@https.bugzilla.kernel.org/>
2010-03-21 19:20 ` [Bug 15328] " bugzilla-daemon
2010-03-22 16:01 ` bugzilla-daemon
2010-10-28 23:32 ` bugzilla-daemon
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