On 04/11/2011 04:08 PM, Greg KH wrote:
On Fri, Apr 01, 2011 at 09:21:09AM +0100, Mel Gorman wrote:
On Thu, Mar 31, 2011 at 03:32:46PM -0500, Christoph Lameter wrote:
On Thu, 31 Mar 2011, Tim Gardner wrote:
Christoph,
commit c2222d66adedc567318a7c288726363daeb3374b in 2.6.32.y (commit
aa45484031ddee09b06350ab8528bfe5b2c76d1c upstream) appears to have introduced
a live-lock regression on UP machines running an SMP kernel.
Pawel Jasnos has bisected his issue to that commit, which is consistent with
the kernel version we've released where things started not working so well.
https://bugs.launchpad.net/ubuntu/maverick/+source/linux/+bug/719446/comments/18
Any thoughts?
Well we have discussed this repeatedly and the upstream solution was to
reduce the vm statistics thresholds. My contribution to the patch
mentioned above was only the zone_page_state_snapshot function. The
rest is from Mel.
AFAICT The fixup to this was 88f5acf88ae6a9778f6d25d0d5d7ec2d57764a97
mm: page allocator: adjust the per-cpu counter threshold when memory is low
Agreed, this was the fixup for reports similar, if not identical, to what
is described in ubuntu#719446 but was not backported to 2.6.32.y. If you
find the patch helps, it may be possible to still get it merged. Thanks.
If someone wants to provide a backported version for me to apply to the
.32-stable tree, I will be glad to apply it.
thanks,
greg k-h
I've started poking at it, but travel is distracting me. I won't get
back to it until late this week.
rtg
--
Tim Gardner [email protected] www.tpi.com
OR 503-601-0234 x102 MT 406-443-5357
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