On Fri, 25 Aug 2017 09:04:37 +0100 Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> wrote: > On Thu, Aug 24, 2017 at 05:59:58PM +0800, Kemi Wang wrote: > > Each page allocation updates a set of per-zone statistics with a call to > > zone_statistics(). As discussed in 2017 MM summit, these are a substantial > > source of overhead in the page allocator and are very rarely consumed. This > > significant overhead in cache bouncing caused by zone counters (NUMA > > associated counters) update in parallel in multi-threaded page allocation > > (pointed out by Dave Hansen). > > > > For the series; > > Acked-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> > I'm very happy to see these issues being worked on, from our MM-summit interactions. I would like to provide/have a: Reported-by: Jesper Dangaard Brouer <brouer@xxxxxxxxxx> As I'm not sure an acked-by from me have any value/merit here ;-) -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer -- 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>
