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Date: Sun, 3 Mar 2002 20:52:37 -0800
From: Mike Fedyk <mfedyk@matchmail.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: "T. A." <tkhoadfdsaf@hotmail.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Question on the rmap VM
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On Sun, Mar 03, 2002 at 01:40:44PM +0000, Alan Cox wrote:
> >     I have a question on the rmap VM.  What is the swap requierment for it?
> > I remember the previous Rik van Riel VM required twice the amount of
> > swapspace as memory to run effectively as many people were complaining about
> > that.  I read a while ago that the switch in 2.4.10 to the new AA VM fixed
> > that issue.  Will rmap bring back that 2x requirement?  Thanks.
> 
> That issue was fixed before the VM was changed - its actually a seperate
> matter of when the kernel went to the trouble of trying to dig stuff out
> of swap.
> 
> If you have a 2.4.18-ac2 kernel you can also see the worst case swap 
> usage requirement at the current moment in /proc/meminfo as
> "Committed AS" 
> 

Can "Committed AS" be easily ported to mainline or -aa?  IOW, does it have an
effective requirement for rmap?
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