On (02/08/07 09:44), KAMEZAWA Hiroyuki didst pronounce: > On Wed, 01 Aug 2007 15:02:51 -0400 > Lee Schermerhorn <[EMAIL PROTECTED]> wrote: > > [But, maybe reordering the zonelists is not such a good idea > > when ZONE_MOVABLE is populated?] > > > > It's case-by-case I think. In zone order with ZONE_MOVABLE case, > user's page cache will not use ZONE_NORMAL until ZONE_MOVABLE in all node > is exhausted. This is an expected behavior, I think. >
This is expected behaviour. I see no reason for lower zones to be used for allocations that use memory from a higher zone with free memory. > I think the real problem is the scheme for "How to set zone movable size to > appropriate value for the system". This needs more study and documentation. > (but maybe depends on system configuration to some extent.) > It depends on the system configuration and the workload requirements. Right now, there isn't exact information available on what size the zone should be. It'll need to be studied over a period of time. -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
