On 23/06/11 17:59, Mel Gorman wrote: > On Thu, Jun 23, 2011 at 04:32:27PM +0100, P?draig Brady wrote: >> On 23/06/11 16:24, Mel Gorman wrote: >>> >>> Theory 2 it is then. This is to be applied on top of the patch for >>> theory 1. >>> >>> ==== CUT HERE ==== >>> mm: vmscan: Prevent kswapd doing excessive work when classzone is unreclaimable >> >> No joy :( >> > > Joy is indeed rapidly fleeing the vicinity. > > Check /proc/sys/vm/laptop_mode . If it's set, unset it and try again. It was not set > > diff --git a/mm/vmscan.c b/mm/vmscan.c > index dce95dd..c8c0f5a 100644 > --- a/mm/vmscan.c > +++ b/mm/vmscan.c > @@ -2426,19 +2426,19 @@ loop_again: > * zone has way too many pages free already. > */ > if (!zone_watermark_ok_safe(zone, order, > - 8*high_wmark_pages(zone), end_zone, 0)) Note 8 was not in my tree. Manually applied patch makes no difference :( Well maybe kswapd0 started spinning a little later. cheers, Pádraig. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>