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
Date: Sun, 3 Mar 2002 20:52:37 -0800 [thread overview]
Message-ID: <20020304045237.GE353@matchmail.com> (raw)
In-Reply-To: <OE50LayI4TY7zD5J47O00005d3d@hotmail.com> <E16hWEG-0004IT-00@the-village.bc.nu>
In-Reply-To: <E16hWEG-0004IT-00@the-village.bc.nu>
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?
next prev parent reply other threads:[~2002-03-04 4:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-03 9:17 Question on the rmap VM T. A.
2002-03-03 13:40 ` Alan Cox
2002-03-04 4:52 ` Mike Fedyk [this message]
2002-03-03 19:02 ` Rik van Riel
2002-03-04 2:49 ` Mike Fedyk
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