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Subject: Re: PROBLEM: ramfs causes system hang when swapping
To: nobbi@cheerful.com
Date: Mon, 26 Feb 2001 21:18:58 +0000 (GMT)
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <20010226220338.A1558@DeepThought> from "Norbert Nemec" at Feb 26, 2001 10:03:38 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> I have a ramfs mounted as /tmp. When I create a large file:
> 
>     dd if=/dev/zero of=/tmp/xxx bs=1024K count=200
>     
> (with 128M RAM), the complete system comes to a halt. Hitting keys does not do 

RAMfs doesnt use swap. It also in 2.4.2 doesnt have limits. The -ac one uses
limits so will stop you totally running the box out of ram. 2.4ac also has
the true tmpfs with swap backing
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