Messages in this thread | | | From | Roger Larsson <> | Subject | Re: 2.4.6-pre2, pre3 VM Behavior | Date | Thu, 14 Jun 2001 22:23:44 +0200 |
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On Thursday 14 June 2001 10:47, Daniel Phillips wrote: > On Thursday 14 June 2001 05:16, Rik van Riel wrote: > > On Wed, 13 Jun 2001, Tom Sightler wrote: > > > Quoting Rik van Riel <riel@conectiva.com.br>: > > > > After the initial burst, the system should stabilise, > > > > starting the writeout of pages before we run low on > > > > memory. How to handle the initial burst is something > > > > I haven't figured out yet ... ;) > > > > > > Well, at least I know that this is expected with the VM, although I do > > > still think this is bad behavior. If my disk is idle why would I wait > > > until I have greater than 100MB of data to write before I finally > > > start actually moving some data to disk? > > > > The file _could_ be a temporary file, which gets removed > > before we'd get around to writing it to disk. Sure, the > > chances of this happening with a single file are close to > > zero, but having 100MB from 200 different temp files on a > > shell server isn't unreasonable to expect. > > This still doesn't make sense if the disk bandwidth isn't being used. >
It does if you are running on a laptop. Then you do not want the pages go out all the time. Disk has gone too sleep, needs to start to write a few pages, stays idle for a while, goes to sleep, a few more pages, ...
/RogerL
-- Roger Larsson Skellefteå Sweden
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