On Thu, 16 Sep 2010 19:01:32 +0900 (JST) KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> wrote: > Yes, sadly intel motherboard turn on zone_reclaim_mode by default. and > current zone_reclaim_mode doesn't fit file/web server usecase ;-) > > So, I've created new proof concept patch. This doesn't disable zone_reclaim > at all. Instead, distinguish for file cache and for anon allocation and > only file cache doesn't use zone-reclaim. > > That said, high-end hpc user often turn on cpuset.memory_spread_page and > they avoid this issue. But, why don't we consider avoid it by default? > > > Rob, I wonder if following patch help you. Could you please try it? > > > Subject: [RFC] vmscan: file cache doesn't use zone_reclaim by default > Hm, can't we use migration of file caches rather than pageout in zone_reclaim_mode ? Doent' it fix anything ? Thanks, -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>