On 10/07/2013 06:29 AM, Mel Gorman wrote: > This patch replaces find_idlest_cpu_node with task_numa_find_cpu. > find_idlest_cpu_node has two critical limitations. It does not take the > scheduling class into account when calculating the load and it is unsuitable > for using when comparing loads between NUMA nodes. > > task_numa_find_cpu uses similar load calculations to wake_affine() when > selecting the least loaded CPU within a scheduling domain common to the > source and destimation nodes. It avoids causing CPU load imbalances in > the machine by refusing to migrate if the relative load on the target > CPU is higher than the source CPU. > > Signed-off-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Reviewed-by: Rik van Riel <riel@xxxxxxxxxx> -- All rights reversed -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>