linux-kernel - Re: Out of memory and no killable processes: 2.6.22-2-686-bigmem

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Date:	Tue, 18 Dec 2007 18:43:22 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	Nico Schottelius <nico-kernel-20071219@...ottelius.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Out of memory and no killable processes: 2.6.22-2-686-bigmem

Nico Schottelius wrote:
> Hello!
> 
> We are running Debian with 2.6.22-2-686-bigmem on Dell Blade 1955 hardware
> and get a Kernel Panic with oom + message that there are no processes
> left to kill:
> 
> http://home.schottelius.org/~nico/unix/linux/oom_no_killable-2.6.22-1.jpeg
> 
> Anyone an idea, what's the cause for that? This error happened on two of
> those machines,
> 
> What I can see in our analysis done with munin is that the number of
> open inodes and inode table size decreased within some days from 40k
> to next to zero. Munin uses
> 
>    awk '{print "used.value " $1-$2 "\nmax.value " $1}' < /proc/sys/fs/inode-nr
> 
> to log those value (happened on both machines).
> 
> Thanks for any hint and CC as usual, please.

How much RAM is in these machines? If you're running tons of memory, it 
really is better to run a 64-bit kernel if possible. I believe there are 
some cases where low memory can be pretty easily exhausted on machines 
with lots of high memory.

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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