From: "Figo.zhang" <zhangtianfei@leadcoretech.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Wu Fengguang <fengguang.wu@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"rientjes@google.com" <rientjes@google.com>,
figo1802 <figo1802@gmail.com>
Subject: Re: oom_killer crash linux system
Date: Wed, 20 Oct 2010 09:36:47 +0800 [thread overview]
Message-ID: <1287538607.2031.5.camel@myhost> (raw)
In-Reply-To: <20101019152249.e268b1e9.kamezawa.hiroyu@jp.fujitsu.com>
>
> >
> > echo 5 > /proc/sys/vm/dirty_ratio
>
> reduce the dirty_ratio, i can use memory up to 1.75GB, and then it
will
> call oom-killer.
>So it helps. Are there intensive IO after reducing dirty_ratio?
> > - enable vmscan trace
> >
> > mount -t debugfs none /sys/kernel/debug
> > echo 1 > /sys/kernel/debug/tracing/events/vmscan/enable
> > <eat memory and wait for crash>
> > cat /sys/kernel/debug/tracing/trace > trace.log
> would you like to help to see the trace.log , i add attached file.
> There are many vmscan writes showing up in the trace.
yes, the DiskIO is be not aggressive when i reduce the dirty_ratio, but
when i use memory up to 1.75GB (total 2GB), the system suddenly crashed.
when i reboot and want to see the /var/log/message, it is without useful
information.
so it is other useful debug approach to find the issue?
next prev parent reply other threads:[~2010-10-20 1:40 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-18 1:47 oom_killer crash linux system Figo.zhang
2010-10-18 1:57 ` KAMEZAWA Hiroyuki
2010-10-18 2:11 ` Wu Fengguang
2010-10-18 8:13 ` Figo.zhang
2010-10-18 9:10 ` KOSAKI Motohiro
2010-10-18 15:31 ` Wu Fengguang
2010-10-19 2:07 ` Figo.zhang
2010-10-19 2:59 ` KAMEZAWA Hiroyuki
2010-10-19 5:23 ` Minchan Kim
2010-10-19 5:26 ` KAMEZAWA Hiroyuki
2010-10-19 5:34 ` Minchan Kim
2010-10-20 1:35 ` Wu Fengguang
2010-10-20 2:06 ` Figo.zhang
2010-10-20 2:32 ` KOSAKI Motohiro
2010-10-20 2:58 ` Figo.zhang
2010-10-20 3:24 ` KOSAKI Motohiro
2010-10-20 3:43 ` Figo.zhang
2010-10-20 5:05 ` Adam Jiang
2010-10-19 6:22 ` KAMEZAWA Hiroyuki
2010-10-20 1:36 ` Figo.zhang [this message]
2010-10-20 1:47 ` Wu Fengguang
2010-10-19 18:43 ` David Rientjes
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