Messages in this thread | | | Date | Tue, 1 May 2001 22:30:54 -0300 (BRST) | From | Rik van Riel <> | Subject | Re: 2.4 and 2GB swap partition limit |
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On Wed, 2 May 2001, Roger Larsson wrote: > On Wednesday 02 May 2001 02:43, Rik van Riel wrote: > > On Tue, 1 May 2001, David S. Miller wrote: > > > Rik van Riel writes: > > > > Then we will be scanning through memory looking for something to > > > > swap out (otherwise we'd not be in need of swap space, right?). > > > > At this point we can simply free up swap entries while scanning
> We could reclaim swap space for dirty pages. They have to be > rewritten anyway... > > Or would the fragmentation risk be too high?
I guess the fragmentation would get worse. Also, when you've got more than enough swap left there's absolutely no reason to reclaim the swap when pages get dirtied.
I just guess we should start reclaiming swap space as soon as the free swap space gets below, say, 5%. We could go for a more complex system of only reclaiming the swap space of dirty pages from a lower threshold on, but I doubt that's worth the complexity.
regards,
Rik -- Virtual memory is like a game you can't win; However, without VM there's truly nothing to lose...
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