Re: sandy bridge kswapd0 livelock with pagecache
From: Pádraig Brady <hidden>
Date: 2011-06-23 19:25:53
On 23/06/11 17:59, Mel Gorman wrote:
On Thu, Jun 23, 2011 at 04:32:27PM +0100, P?draig Brady wrote:quoted
On 23/06/11 16:24, Mel Gorman wrote:quoted
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 unreclaimableNo 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
quoted hunk ↗ jump to hunk
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, Padraig. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. 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@kvack.org"> email@kvack.org </a>