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SubjectRe: Avoid allocating during interleave from almost full nodes
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On Wed, 2006-11-08 at 02:21 -0800, Paul Jackson wrote:
> Christoph wrote:
> > On Sat, 4 Nov 2006, Paul Jackson wrote:
> >
> > > Do you know of any existing counters that we could use like this?
> > >
> > > Adding a system wide count of pages allocated or scanned, just for
> > > these fullnode hint caches, bothers me.
> >
> > There are already such counters. PGALLOC_* and PGSCAN_*. See
> > include/linux/vmstat.h
>
>
> Andrew,
>
> I'm willing to take a shot at replacing the wall clock time
> base with one of these vm counters, in my patch in *-mm:
>
> memory-page_alloc-zonelist-caching-speedup.patch
>
> But it will be a few weeks before I can get to it.
>
> I really need to do some other stuff first.

The swap token code in -mm (which I still have to review) has a global
fault counter to measure 'time'. Perhaps we can generalise that.


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