Messages in this thread | | | Date | Tue, 27 Oct 2009 15:19:05 +0000 | From | Mel Gorman <> | Subject | Re: [PATCH 2/5] page allocator: Do not allow interrupts to use ALLOC_HARDER |
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On Fri, Oct 23, 2009 at 10:03:05PM -0400, Christoph Lameter wrote: > There are now rt dependencies in the page allocator that screw things up? >
The rt logic was present before.
> And an rt flag causes the page allocator to try harder meaning it adds > latency. >
The harder term in the flag is a bit misleading. The effect of ALLOC_HARDER is that the watermark is lower for the task. i.e. a rt task is less likely to enter direct reclaim than normal tasks so it should have less latency.
> ? > >
-- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab
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