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SubjectRe: broken VM in 2.4.10-pre9
On Sun, 16 Sep 2001 19:06:45 +0200 (MET) Ricardo Galli <>

> On Sun, 16 Sep 2001, Jeremy Zawodny wrote:
> >
> > Agreed. I'd be great if there was an option to say "Don't swap out
> > memory that was allocated by these programs. If you run out of disk
> > buffers, toss the oldest ones and start re-using them."
> More easy though (for cases of listening mp3's and backups): cache pages
> that were accesed only "once"(*) several seconds ago must be discarded
> first. It only implies a check against an access counter and a "last
> accesed" epoch fields of the page.

Well, I guess this is everybody's first idea about the problem: make an initial
timestamp for knowing how _old_ an allocation really is, and make an access
counter. Ok. The first is easy, but how do you achieve an access-counter? If
this was solved, the problem is solved.
You can do really nice aging with access to such kind of information.
Any ideas?


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