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 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/
