linux-kernel - Re: [PATCH v2 0/5] Fix oom killer doesn't work at all if system have

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Message-ID: <348391538.318712.1306828778575.JavaMail.root@zmail06.collab.prod.int.phx2.redhat.com>
Date:	Tue, 31 May 2011 03:59:38 -0400 (EDT)
From:	CAI Qian <caiqian@...hat.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, rientjes@...gle.com, hughd@...gle.com,
	kamezawa hiroyu <kamezawa.hiroyu@...fujitsu.com>,
	minchan kim <minchan.kim@...il.com>, oleg@...hat.com
Subject: Re: [PATCH v2 0/5] Fix oom killer doesn't work at all if system
 have > gigabytes memory  (aka CAI founded issue)



----- Original Message -----
> (2011/05/31 16:50), CAI Qian wrote:
> >
> >
> > ----- Original Message -----
> >>>> - If you run the same program as root, non root process and
> >>>> privilege
> >>>> explicit
> >>>> dropping processes (e.g. irqbalance) will be killed at first.
> >>> Hmm, at least there were some programs were root processes but
> >>> were
> >>> killed
> >>> first.
> >>> [ pid] ppid uid total_vm rss swap score_adj name
> >>> [ 5720] 5353 0 24421 257 0 0 sshd
> >>> [ 5353] 1 0 15998 189 0 0 sshd
> >>> [ 5451] 1 0 19648 235 0 0 master
> >>> [ 1626] 1 0 2287 129 0 0 dhclient
> >>
> >> Hi
> >>
> >> I can't reproduce this too. Are you sure these processes have a
> >> full
> >> root privilege?
> >> I've made new debugging patch. After applying following patch, do
> >> these processes show
> >> cap=1?
> > No, all of them had cap=0. Wondering why something like sshd not
> > been
> > made cap=1 to avoid early oom kill.
> 
> Then, I believe your distro applying distro specific patch to ssh.
> Which distro are you using now?
It is a Fedora-like distro.
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