* Martin Hicks <[email protected]> wrote:
> On Mon, Aug 01, 2005 at 09:54:26PM +0200, Ingo Molnar wrote:
> >
> > * Andrew Morton <[email protected]> wrote:
> >
> > > > We could perhaps add a CAP_SYS_ADMIN-only sysctl for this hack,
> > >
> > > That would be more appropriate.
> > >
> > > (I'm still not sure what happened to the idea of adding a call to
> > > "clear out this node+zone's pagecache now" rather than "set this
> > > noed+zone's policy")
> >
> > lets do that as a sysctl hack. It would be useful for debugging purposes
> > anyway. But i'm not sure whether it's the same issue - Martin?
>
> (Sorry..I was on vacation yesterday)
>
> Yes, this is the same issue with a different way of making it happen.
> Setting a zone's policy allows reclaim to happen automatically.
>
> I'll send in a patch to add a sysctl to do the manual dumping of
> pagecache really soon.
cool! [ Incidentally, when i found this problem i was looking for
existing bits in the kernel to write such a patch myself (which i wanted
to use on non-NUMA to create more reproducable workloads for
performance-testing) - now i'll wait for your patch. ]
Ingo
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