linux-kernel - Re: [-mm patch] Show memcg information during OOM

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Message-ID: <20090203043404.GK918@balbir.in.ibm.com>
Date:	Tue, 3 Feb 2009 10:04:04 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
	"lizf@...fujitsu.com" <lizf@...fujitsu.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: [-mm patch] Show memcg information during OOM

* KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> [2009-02-03 10:21:57]:

> On Mon, 2 Feb 2009 19:38:49 +0530
> Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:
> 
> > * Balbir Singh <balbir@...ux.vnet.ibm.com> [2009-02-02 18:22:40]:
> > 
> > > Hi, All,
> > > 
> > > I found the following patch useful while debugging the memory
> > > controller. It adds additional information if memcg invoked the OOM.
> > > 
> > > Comments, Suggestions?
> > >
> > 
> > 
> > Description: Add RSS and swap to OOM output from memcg
> > 
> > From: Balbir Singh <balbir@...ux.vnet.ibm.com>
> > 
> 
> > This patch displays memcg values like failcnt, usage and limit
> > when an OOM occurs due to memcg.
> > 
> 
> please use "KB" not bytes in OOM killer information.
> 
> And the most important information is dropped..
> Even if you show information, the most important information that
> "where I am and where we hit limit ?" is not coverred.
> Could you consider some way to show full-path ?
> 
>   OOM-Killer:
>   Task in /memory/xxx/yyy/zzz is killed by
>   Limit of /memory/xxxx
>   RSS Limit :     Usage:     Failcnt....
>   RSS+SWAP Limit: ....
>

Sounds good to me, let me add this information. 

-- 
	Balbir
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