Re: [PATCH][BUGFIX] memcg fix zone congestion

Daisuke Nishimura
2011-05-13T04:19:52Z

On Fri, 13 May 2011 12:10:30 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:

>
> ZONE_CONGESTED should be a state of global memory reclaim.
> If not, a busy memcg sets this and give unnecessary throttoling in
> wait_iff_congested() against memory recalim in other contexts. This makes
> system performance bad.
>
hmm, nice catch.

Just from my curiosity, is there any number of performance improvement by this patch?

Thanks,
Daisuke Nishimura.