On 30.10.2012 20:18, Mel Gorman wrote:
On Mon, Oct 29, 2012 at 11:52:03AM +0100, Thorsten Leemhuis wrote:
On 15.10.2012 13:09, Mel Gorman wrote:
On Mon, Oct 15, 2012 at 11:54:13AM +0200, Jiri Slaby wrote:
On 10/12/2012 03:57 PM, Mel Gorman wrote:
mm: vmscan: scale number of pages reclaimed by reclaim/compaction only in direct reclaim
Jiri Slaby reported the following:
[...]
Yes, applying this instead of the revert fixes the issue as well.
Just wondering, is there a reason why this patch wasn't applied to
mainline? Did it simply fall through the cracks? Or am I missing
something?
It's because a problem was reported related to the patch (off-list,
whoops). I'm waiting to hear if a second patch fixes the problem or not.
Anything in particular I should look out for while testing?
I'm asking because I think I stil see the issue on
3.7-rc2-git-checkout-from-friday. Seems Fedora rawhide users are
hitting it, too:
https://bugzilla.redhat.com/show_bug.cgi?id=866988
I like the steps to reproduce.
One of those cases where the bugzilla bug template was not very helpful
or where it was not used as intended (you decide) :-)
Is step 3 profit?
Yes, but psst, don't tell anyone; step 4 (world domination! for real!)
is also hidden to keep that part of the big plan a secret for now ;-)
Or are we seeing something different which just looks similar? I can
test the patch if it needs further testing, but from the discussion
I got the impression that everything is clear and the patch ready
for merging.
It could be the same issue. Can you test with the "mm: vmscan: scale
number of pages reclaimed by reclaim/compaction only in direct reclaim"
patch and the following on top please?
Built a vanilla mainline kernel with those two patches and installed it
on the machine where I was seeing problems high kswapd0 load on 3.7-rc3.
Ran it an hour yesterday and a few hours today; seems the patches fix
the issue for me as kswapd behaves:
$ LC_ALL=C ps -aux | grep 'kswapd'
root 62 0.0 0.0 0 0 ? S Oct30 0:05 [kswapd0]
So everything is looking fine again so far thx to the two patches --
hopefully it stays that way even after hitting "send" in my mailer in a
few seconds.
CU
knurd
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