On Thu, Oct 25, 2012 at 02:16:47PM +0200, Peter Zijlstra wrote: > Add a 1 second delay before starting to scan the working set of > a task and starting to balance it amongst nodes. > > [ note that before the constant per task WSS sampling rate patch > the initial scan would happen much later still, in effect that > patch caused this regression. ] > > The theory is that short-run tasks benefit very little from NUMA > placement: they come and go, and they better stick to the node > they were started on. As tasks mature and rebalance to other CPUs > and nodes, so does their NUMA placement have to change and so > does it start to matter more and more. > Yeah, ok. It's done by wall time, right? Should it be CPU time in case it spent the first second asleep? -- Mel Gorman SUSE Labs -- 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>