Re: Plain 2.4.5 VM

Mike Galbraith
2001-05-31T05:23:37Z

On Wed, 30 May 2001, Marcelo Tosatti wrote:

> On Wed, 30 May 2001, Mike Galbraith wrote:
>
> > On Wed, 30 May 2001, Rik van Riel wrote:
> >
> > > On Wed, 30 May 2001, Marcelo Tosatti wrote:
> > >
> > > > The problem is that we allow _every_ task to age pages on the system
> > > > at the same time --- this is one of the things which is fucking up.
> > >
> > > This should not have any effect on the ratio of cache
> > > reclaiming vs. swapout use, though...
> >
> > It shouldn't.. but when many tasks are aging, it does.
>
> What Rik means is that they are independant problems.

Ok.

>
> > Excluding these guys certainly seems to make a difference.
>
> Sure, those guys are going to "help" kswapd to unmap pte's and allocate
> swap space.
>
> Now even if only kswapd does this job (meaning a sane amount of cache
> reclaims/swapouts), you still have to deal with the reclaim/swapout
> tradeoff.
>
> See?

Yes.

-Mike