From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: minchan.kim@gmail.com
Cc: abarry@cray.com, akpm@linux-foundation.org, linux-mm@kvack.org,
mgorman@suse.de, riel@redhat.com, hannes@cmpxchg.org,
linux-kernel@vger.kernel.org, fengguang.wu@intel.com
Subject: Re: Unending loop in __alloc_pages_slowpath following OOM-kill; rfc: patch.
Date: Tue, 24 May 2011 18:36:29 +0900 [thread overview]
Message-ID: <4DDB7C1D.8040300@jp.fujitsu.com> (raw)
In-Reply-To: <BANLkTimbu0pDNb1cHGu0B6P-foRHQ2uiWw@mail.gmail.com>
>> Can you please tell me previous discussion url or mail subject?
>> I mean, if it is costly and performance degression risk, we don't have to
>> take my idea.
>
> Yes. You could see it by https://lkml.org/lkml/2011/4/30/81.
I think Wu pointed out "lightweight vmscan could reclaim pages but stealed
from another task case". It's very different with "most heavyweight vmscan
still failed to reclaim any pages". The point is, IPIs cost depend on the
frequency. stealing frequently occur on current logic, but vmscan priority==0
is?
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prev parent reply other threads:[~2011-05-24 9:36 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-13 21:31 Andrew Barry
2011-05-17 10:34 ` Minchan Kim
2011-05-17 11:34 ` Mel Gorman
2011-05-17 15:49 ` Andrew Barry
2011-05-18 22:29 ` Minchan Kim
2011-05-20 16:49 ` Minchan Kim
2011-05-20 17:16 ` Rik van Riel
2011-05-20 17:23 ` Mel Gorman
2011-05-24 4:54 ` KOSAKI Motohiro
2011-05-24 5:45 ` KOSAKI Motohiro
2011-05-24 8:30 ` Mel Gorman
2011-05-24 8:36 ` KOSAKI Motohiro
2011-05-24 8:49 ` Mel Gorman
2011-05-24 9:05 ` KOSAKI Motohiro
2011-05-24 9:16 ` Mel Gorman
2011-05-24 9:40 ` KOSAKI Motohiro
2011-05-24 10:57 ` Mel Gorman
2011-05-24 23:53 ` KOSAKI Motohiro
2011-05-24 8:34 ` Minchan Kim
2011-05-24 8:41 ` KOSAKI Motohiro
2011-05-24 8:57 ` Minchan Kim
2011-05-24 9:36 ` KOSAKI Motohiro [this message]
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