Re: 2.4.19-preX: What we really need: -AA patches finally in thetree

From: Martin Knoblauch (Martin.Knoblauch@TeraPort.de)
Date: Wed Feb 27 2002 - 06:06:40 EST

Rik van Riel wrote:
>
> On Wed, 27 Feb 2002, Martin Knoblauch wrote:
>
> > > > Not to begin the flamewar, but no thanks. rmap-12f blows -aa away AFAIK
> > > > on this P200 w/ 64MB ram.
> > >
> > > rmap still sucks on large systems though. I'd love to see rmap
> > > in the main kernel, but it needs to get the scalability fixed first.
> > > The main problem seems to be pagemap_lru_lock ... Rik & crew
> > > know about this problem, but let's give them some time to fix it
> > > before rmap gets put into mainline ....
> >
> > just out of curiosity: where does "large systems" start in your
> > context?
>
> My guess it would start at about 4 or 8 CPUs.
>
> Systems which have a lot of pagetable overhead would also
> suffer with -rmap, until -rmap supports pte_highmem.
>

 So, what about a Dual-Athlon system with 2-3 GB of memory? Large
system, or just a peanut? :-)

Martin 

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