http://bugzilla.kernel.org/show_bug.cgi?id=15328
Summary: high load avg, extreme sluggishness on T41 w/ Radeon
Mobility M7
Product: Drivers
Version: 2.5
Kernel Version: 2.6.33-rc8
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - non Intel)
AssignedTo: drivers_video-...@kernel-bugs.osdl.org
ReportedBy: linvi...@tuxdriver.com
CC: thellst...@vmware.com
Regression: Yes
After loading a recent wireless-testing kernel (based on 2.6.33-rc8) on my T41
I noticed an unacceptabel sluggishness. Opening gnome-terminal took a long
time, firefox took so long I rebooted before it ever came-up, etc. The w
command continually reported a load average for between 2 and 3 on an
apparently idle box.
A git bisect session identified this patch:
commit db78e27de7e29a6db6be7caf607cf803d84094aa
Author: Francisco Jerez <curroje...@riseup.net>
Date: Tue Jan 12 18:49:43 2010 +0100
drm/ttm: Avoid conflicting reserve_memtype during ttm_tt_set_page_caching.
Fixes errors like:
> reserve_ram_pages_type failed 0x15b7a000-0x15b7b000, track 0x8, req 0x10
when a BO is moved between WC and UC areas.
Reported-by: Xavier Chantry <shinin...@gmail.com>
Signed-off-by: Francisco Jerez <curroje...@riseup.net>
Acked-by: Thomas Hellstrom <thellst...@vmware.com>
Signed-off-by: Dave Airlie <airl...@redhat.com>
Just to verify, I sent back to my wireless-testing tree and reverted that
patch. This restored normal/acceptable performance.
If you need/want testing or whatnot just let me know...
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