From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Fri, 15 Feb 2008 14:29:58 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [RFC] [PATCH 3/4] Reclaim from groups over their soft limit
 under memory pressure
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On Thu, 14 Feb 2008 21:16:48 -0800
"Paul Menage" <menage@google.com> wrote:

> On Thu, Feb 14, 2008 at 9:07 PM, KAMEZAWA Hiroyuki
> <kamezawa.hiroyu@jp.fujitsu.com> wrote:
> >  We can free memory by just making memory.limit to smaller number.
> >  (This may cause OOM. If we added high-low watermark, making memory.high smaller
> >   can works well for memory freeing to some extent.)
> >
> 
> What about if we want to apply memory pressure to a cgroup to push out
> unused memory, but not push out memory that it's actively using?
> 
Generally, only way to avoid pageout is mlock() because actively-used is just
determeined by reference-bit and heavy pressure can do page-scanning too much.
I hope that RvR's LRU improvement may change things better.


Thanks,
-Kame

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