On Tue, Mar 30, 2010 at 03:31:40PM +0800, KOSAKI Motohiro wrote: > > > > > Very unfortunately, this patch isn't acceptable. In past time, vmscan > > > > > had similar logic, but 1% swap-out made lots bug reports. > > > > can you elaborate this? > > > > Completely restore previous behavior (do full scan with priority 0) is > > > > ok too. > > > > > > This is a option. but we need to know the root cause anyway. > > I thought I mentioned the root cause in first mail. My debug shows > > recent_rotated[0] is big, but recent_rotated[1] is almost zero, which makes > > percent[0] 0. But you can double check too. > > To revert can save percent[0]==0 && priority==0 case. but it shouldn't > happen, I think. It mean to happen big latency issue. > > Can you please try following patch? Also, I'll prepare reproduce environment soon. still oom with the patch. -- 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>