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

Minchan Kim
2011-05-13T03:53:42Z

On Fri, May 13, 2011 at 12:10 PM, 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.
>
> I'll think about "memcg is congested!" flag is required or not, later.
> But this fix is required 1st.

It's reasonable.

>
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>

--
Kind regards,
Minchan Kim