[lkml]   [2011]   [Jun]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [patch 7/8] vmscan: memcg-aware unevictable page rescue scanner
2011/6/3 Ying Han <>:
> On Thu, Jun 2, 2011 at 6:27 AM, Hiroyuki Kamezawa
> <> wrote:
>> 2011/6/1 Johannes Weiner <>:
>>> Once the per-memcg lru lists are exclusive, the unevictable page
>>> rescue scanner can no longer work on the global zone lru lists.
>>> This converts it to go through all memcgs and scan their respective
>>> unevictable lists instead.
>>> Signed-off-by: Johannes Weiner <>
>> Hm, isn't it better to have only one GLOBAL LRU for unevictable pages ?
>> memcg only needs counter for unevictable pages and LRU is not necessary
>> to be per memcg because we don't reclaim it...
> Hmm. Are we suggesting to keep one un-evictable LRU list for all
> memcgs? So we will have
> exclusive lru only for file and anon. If so, we are not done to make
> all the lru list being exclusive
> which is critical later to improve the zone->lru_lock contention
> across the memcgs
considering lrulock, yes, maybe you're right.

> Sorry If i misinterpret the suggestion here

My concern is I don't know for what purpose this function is used ..


 \ /
  Last update: 2011-06-03 00:03    [W:0.170 / U:0.448 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site