Re: kswapd at 96% CPU on my 16Mb system

From: Mike Galbraith (
Date: Fri Jun 16 2000 - 10:13:56 EST

On Fri, 16 Jun 2000, Kees Bakker wrote:

> >>>>> "Mike" == Mike Galbraith <> writes:
> Mike> On Thu, 15 Jun 2000, Kees Bakker wrote:
> >> With test1-ac17 I still have very bad performance, because kswapd eats
> >> almost all of the CPU cycles. The bare test1 was a little better, but not
> >> much.
> Mike> Hmm, plain test1 gives MUCH (>100%) better performance here (128mb.. not
> Mike> tested under ram-impoverished config) Have you tried 99-pre5 on this box?..
> Mike> pre5 was the last kernel which gave me nice all-around (vm) preformance.
> No I haven't tried 99-pre5. 2.4.0-test is the first kernel I tried on this
> machine. Kswapd uses about 86-90% CPU. Then I grabbed ac17, but now kswapd
> takes even more CPU.

I suggest giving pre5 a trial run. I suspect that it will work quite
well on your low ram box. If this suspicion proves accurate, that bit
of info could be useful to the vm wizards. [mvho: if it takes your box
20 minutes to an hour to boot with >=test1 kernels, further testing
of these kernels on your hardware is a pointless waste of your time]


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