Re: kswapd eats the cpu without swap

Marcelo Tosatti (marcelo@conectiva.com.br)
Mon, 6 Aug 2001 19:47:41 -0300 (BRT)


On Tue, 7 Aug 2001, Daniel Phillips wrote:

> On Tuesday 07 August 2001 00:48, BERECZ Szabolcs wrote:
> > On Fri, 3 Aug 2001, Marcelo Tosatti wrote:
> > > Does the problem happen only with the used-once patch ?
> > >
> > > If it also happens without the used-once patch, can you reproduce
> > > the problem with 2.4.6 ?
> >
> > The problem happened about 4 times, with the used-once patch,
> > but I don't know exactly what triggered it.
> >
> > now I use 2.4.7-ac5, and I have not seen the problem, yet.
> >
> > I will try with the used-once patch, if it appears again.
>
> Please note the additional patch, to be applied after the used-once
> patch for 2.4.7 and 2.4.7-ac*, or directly to 2.4.8-pre*. This was
> posted on lkml and linux-mm on Aug 5 under the subject:
>
> [PATCH] Unlazy activate
>
> which adds the additional behaviour of moving used-twice pages to the
> active list.

Daniel,

I would like to identify the reason why kswapd is looping like mad instead
trying _any_ fix.

I can't see why unlazy activation would make kswapd not loop like mad
anymore.

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