Messages in this thread | | | Date | Wed, 27 Feb 2002 08:01:45 -0300 (BRT) | From | Rik van Riel <> | Subject | Re: 2.4.19-preX: What we really need: -AA patches finally in thetree |
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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.
regards,
Rik -- "Linux holds advantages over the single-vendor commercial OS" -- Microsoft's "Competing with Linux" document
http://www.surriel.com/ http://distro.conectiva.com/
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