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

[KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>]

On Mon, 2 Feb 2009 19:38:49 +0530
Balbir Singh <balbir@linux.vnet.ibm.com> wrote:

> * Balbir Singh <balbir@linux.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@linux.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: ....



Thanks,
-Kame

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