linux-kernel - Re: oom_killer crash linux system

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Date:	Wed, 20 Oct 2010 12:24:34 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	"Figo.zhang" <zhangtianfei@...dcoretech.com>
Cc:	kosaki.motohiro@...fujitsu.com,
	Wu Fengguang <fengguang.wu@...el.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Minchan Kim <minchan.kim@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"rientjes@...gle.com" <rientjes@...gle.com>,
	figo1802 <figo1802@...il.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: oom_killer crash linux system

> 
> > 
> > can you please try 1) invoke oom 2) get page-types -r again. I'm curious
> > that oom makes page accounting lost again. I mean, please send us oom 
> > log and "page-types -r" result.
> > 
> > thanks
> 
> ok, i do the experiment and catch the log:

thanks.


> active_anon:398375 inactive_anon:82967 isolated_anon:0 
>  active_file:81 inactive_file:429 isolated_file:32
>  unevictable:13 dirty:2 writeback:14 unstable:0
>  free:11942 slab_reclaimable:2391 slab_unreclaimable:3303
>  mapped:5617 shmem:33909 pagetables:2280 bounce:0

active_anon + inactive_anon + isolated_anon = 481342 pages ~= 1.8GB
Um, this oom doesn't makes accounting lost.

> here is the page-types log:
>              flags	page-count       MB  symbolic-flags long-symbolic-flags
> 
> 0x0000000000005828	     83024      324 ___U_l_____Ma_b___________________ uptodate,lru,mmap,anonymous,swapbacked
> 0x0000000000005868	    358737     1401 ___U_lA____Ma_b___________________ uptodate,lru,active,mmap,anonymous,swapbacked
>              total	    515071     2011

page-types show similar result.


The big difference is, previous and current are showing some different processes.
only previous has VirtualBox, only current has vmware-usbarbit, etc..

Can you use same test environment?



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