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SubjectRe: 2.4.8/2.4.9 VM problems
On Mon, 20 Aug 2001, Daniel Phillips wrote:

> On August 20, 2001 09:14 pm, Mike Galbraith wrote:
> > On Mon, 20 Aug 2001, Daniel Phillips wrote:
> > > On August 20, 2001 05:40 pm, Mike Galbraith wrote:
> > > > I'll give your patch a shot. In the meantime, below is what I did
> > > > to it here. I might have busted use_once all to pieces ;-) but it
> > > > cured my problem, so I'll show it anyway.
> > >
> > > No, this doesn't break it at all, what it does is require the IO page
> > > to be touched more times before it's considered truly active. This
> > > partly takes care of the theory that an intial burst of activity on
> > > the page should be considered as only one use.
> >
> > (it turns it into a ~sortof used twiceish in my specific case I think..
>
> Actually, used-thriceish.
>
> > the aging must happen to make it work right though.. very very tricky.
>
> I doubt the aging has much to do with it, what's more important is the length
> of the inactive_dirty queue. Of course, aging affects that and so does
> scanning policy, both a little "uncalibrated" at the moment.
>
> > Nope, I don't have anything other than a 'rough visual' to work with..
> > might be totally out there ;-)
>
> What made you think of trying the higher activation threshold? ;-)

Well :)) there I sat daydreaming, imagining myself as a bonnie page
running around queues, got dizzy and finally just changed the little
spot that kept attracting my eyeballs.. a hunch.

-Mike

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