Messages in this thread | | | Date | Tue, 18 Aug 2009 17:42:17 +0100 | From | Mel Gorman <> | Subject | Re: [PATCH 3/3] page-allocator: Move pcp static fields for high and batch off-pcp and onto the zone |
| |
On Tue, Aug 18, 2009 at 10:18:48AM -0400, Christoph Lameter wrote: > > This will increase the cache footprint for the hot code path. Could these > new variable be moved next to zone fields that are already in use there? > The pageset array is used f.e. >
pageset is ____cacheline_aligned_in_smp so putting pcp->high/batch near it won't help in terms of cache footprint. This is why I located it near watermarks because it's known they'll be needed at roughly the same time pcp->high/batch would be normally accessed.
-- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab
| |