linux-kernel - Re: 2.6.20 OOM with 8Gb RAM

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Date:	Fri, 13 Apr 2007 18:39:36 -0400
From:	Jason Lunz <lunz@...ooley.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Cameron Schaus <cam@...aus.ca>, linux-kernel@...r.kernel.org
Subject: Re: 2.6.20 OOM with 8Gb RAM

On Thu, Apr 12, 2007 at 12:15:53PM -0700, Andrew Morton wrote:
> All of ZONE_NORMAL got used by ramdisk, and networking wants to
> allocate a page from ZONE_NORMAL.  An oom-killing is the correct
> response, although probably not effective.
> 
> ramdisk is a nasty thing - cannot you use ramfs or tmpfs?

What do you mean by "nasty thing"? I've heard that about loopback too.

If I want to run a system entirely from ram with a compressed filesystem
image mounted on /, is it better to store that image in a ramdisk, or on
a tmpfs and mount it via loopback?

Jason
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