linux-kernel - Re: [PATCH] mm: check zone->all_unreclaimable in all

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Message-Id: <20110309150656.c7128fdd.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Wed, 9 Mar 2011 15:06:56 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Andrew Vagin <avagin@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Minchan Kim <minchan.kim@...il.com>,
	Andrey Vagin <avagin@...nvz.org>, Mel Gorman <mel@....ul.ie>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: check zone->all_unreclaimable in
 all_unreclaimable()

On Tue, 08 Mar 2011 11:12:22 +0300
Andrew Vagin <avagin@...il.com> wrote:

> Hi, All
> > I agree with Minchan and can't think this is a real fix....
> > Andrey, I'm now trying your fix and it seems your fix for oom-killer,
> > 'skip-zombie-process' works enough good for my environ.
> >
> > What is your enviroment ? number of cpus ? architecture ? size of memory ?
> Processort: AMD Phenom(tm) II X6 1055T Processor (six-core)
> Ram: 8Gb
> RHEL6, x86_64. This host doesn't have swap.
> 
Ok, thanks. "NO SWAP" is a big information ;)

> It hangs up fast. Tomorrow I will have to send a processes state, if it 
> will be interesting for you. With my patch the kernel work fine. I added 
> debug and found that it hangs up in the described case.
> I suppose that my patch may be incorrect, but the problem exists and we 
> should do something.
>

Thanks,
-Kame

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