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SubjectRe: [PATCH 3/3] mm,vmscan: Reclaim order-0 and compact instead of lumpy reclaim when under light pressure
On Thu, Nov 11, 2010 at 07:07:04PM +0000, Mel Gorman wrote:
> + if (COMPACTION_BUILD)
> + sc->lumpy_reclaim_mode = LUMPY_MODE_COMPACTION;
> + else
> + sc->lumpy_reclaim_mode = LUMPY_MODE_CONTIGRECLAIM;
>

Gack, I posted the slightly wrong version. This version prevents lumpy
reclaim ever being used. The figures I posted were for a patch where
this condition looked like

if (COMPACTION_BUILD && priority > DEF_PRIORITY - 2)
sc->lumpy_reclaim_mode = LUMPY_MODE_COMPACTION;
else
sc->lumpy_reclaim_mode = LUMPY_MODE_CONTIGRECLAIM;

--
Mel Gorman
Part-time Phd Student Linux Technology Center
University of Limerick IBM Dublin Software Lab


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