lkml.org 
[lkml]   [2001]   [Jun]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: 2.4.6-pre2, pre3 VM Behavior
Date
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

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:17    [W:0.318 / U:0.748 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site