On Wed, 14 Jun 2000, Alan Cox wrote:
> > I'm not sure what you mean. Looking at your changelog there
> > have been no VM chances since -ac10 (my two-liner to clear
> > the referenced bit on lru_cache_add) and -ac17 (Zlatko's
> > one liner)...
>
> I suspect the ac10 change may be the actual one that did the damage. Ingo
> says:
>
> |who has added the PG_AGE_ stuff to filemap.c? It's behaving quite badly on
> |SMP - a simple stream of reads cause 20-30% kswapd activity, with the
> |majority of the profiling hits getting the 'PageTestandClearRreferenced()'
> |line.
This was the case *before* ac10. The patchlet that went into
ac10 always *resets* the referenced bit before adding a page
to the lru list...
regards,
Rik
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