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SubjectRe: kswapd craziness round 2
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On Fri, Mar 1, 2013 at 1:02 AM, Jiri Slaby <jslaby@suse.cz> 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.

Hillf
--- 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:
--

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