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SubjectRe: Linux 2.4.4-ac10
On Fri, 18 May 2001, Ingo Oeser wrote:
> On Fri, May 18, 2001 at 03:23:03PM -0300, Rik van Riel wrote:

> > "such a tradeoff" ?
> >
> > While this sounds reasonable, I have to point out that
> > up to now nobody has described exactly WHAT tradeoff
> > they'd like to make tunable and why...
> Amount of pages reclaimed from swapout_mm() versus amount of
> pages reclaimed from caches.
> A value that says: "use XX% of my main memory for RSS of
> processes, even if I run heavy disk loadf now" would be nice.
> For general purpose machines, where I run several services but
> also play games, this would allow both to survive.
> The external services would go slower. Who cares, if some CVS
> updates or NFS services go slower, if I can play my favorite game
> at full speed? ;-)

Remember that the executable and data of that game reside
in the filesystem cache. This "double counting" makes it
quite a bit harder to actually implement what seems like
a simple tradeoff.


Linux MM bugzilla:

Virtual memory is like a game you can't win;
However, without VM there's truly nothing to lose...

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