On Fri, Mar 8, 2013 at 3:37 AM, Jiri Slaby <jslaby@xxxxxxx> wrote: > On 03/01/2013 03:02 PM, Hillf Danton wrote: >> On Fri, Mar 1, 2013 at 1:02 AM, Jiri Slaby <jslaby@xxxxxxx> wrote: >>> >>> Ok, no difference, kswap is still crazy. I'm attaching the output of >>> "grep -vw '0' /proc/vmstat" if you see something there. >>> >> Thanks to you for test and data. >> >> Lets try to restore the deleted nap, then. > > Oh, it seems to be nice now: > root 579 0.0 0.0 0 0 ? S Mar04 0:13 [kswapd0] > Double thanks. But Mel does not like it, probably. Lets try nap in another way. Hillf --- a/mm/vmscan.c Thu Feb 21 20:01:02 2013 +++ b/mm/vmscan.c Fri Mar 8 14:36:10 2013 @@ -2793,6 +2793,10 @@ loop_again: * speculatively avoid congestion waits */ zone_clear_flag(zone, ZONE_CONGESTED); + + else if (sc.priority > 2 && + sc.priority < DEF_PRIORITY - 2) + wait_iff_congested(zone, BLK_RW_ASYNC, HZ/10); } /* -- >> >> --- a/mm/vmscan.c Thu Feb 21 20:01:02 2013 >> +++ b/mm/vmscan.c Fri Mar 1 21:55:40 2013 >> @@ -2817,6 +2817,10 @@ loop_again: >> */ >> if (sc.nr_reclaimed >= SWAP_CLUSTER_MAX) >> break; >> + >> + if (sc.priority < DEF_PRIORITY - 2) >> + congestion_wait(BLK_RW_ASYNC, HZ/10); >> + >> } while (--sc.priority >= 0); >> >> out: >> -- >> > > > -- > js > suse labs -- 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>