From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Ying Han <yinghan@google.com>
Cc: kosaki.motohiro@jp.fujitsu.com,
Minchan Kim <minchan.kim@gmail.com>,
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Tejun Heo <tj@kernel.org>, Pavel Emelyanov <xemul@openvz.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Andrew Morton <akpm@linux-foundation.org>,
Li Zefan <lizf@cn.fujitsu.com>, Mel Gorman <mel@csn.ul.ie>,
Christoph Lameter <cl@linux.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Rik van Riel <riel@redhat.com>, Hugh Dickins <hughd@google.com>,
Michal Hocko <mhocko@suse.cz>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Zhu Yanhai <zhu.yanhai@gmail.com>,
linux-mm@kvack.org
Subject: Re: [PATCH V7 4/9] Add memcg kswapd thread pool
Date: Fri, 22 Apr 2011 14:39:24 +0900 (JST) [thread overview]
Message-ID: <20110422143957.FA6D.A69D9226@jp.fujitsu.com> (raw)
In-Reply-To: <1303446260-21333-5-git-send-email-yinghan@google.com>
> +bool mem_cgroup_kswapd_can_sleep(void)
> +{
> + return list_empty(&memcg_kswapd_control.list);
> +}
and,
> @@ -2583,40 +2585,46 @@ static void kswapd_try_to_sleep(struct kswapd *kswapd_p, int order,
> } else {
> + /* For now, we just check the remaining works.*/
> + if (mem_cgroup_kswapd_can_sleep())
> + schedule();
has bad assumption. If freeable memory is very little and kswapds are
contended, memcg-kswap also have to give up and go into sleep as global
kswapd.
Otherwise, We are going to see kswapd cpu 100% consumption issue again.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2011-04-22 5:39 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-22 4:24 [RFC PATCH V7 0/9] memcg: per cgroup background reclaim Ying Han
2011-04-22 4:24 ` [PATCH V7 1/9] Add kswapd descriptor Ying Han
2011-04-22 4:31 ` KAMEZAWA Hiroyuki
2011-04-22 4:47 ` KOSAKI Motohiro
2011-04-22 5:55 ` Ying Han
2011-04-22 4:24 ` [PATCH V7 2/9] Add per memcg reclaim watermarks Ying Han
2011-04-22 4:24 ` [PATCH V7 3/9] New APIs to adjust per-memcg wmarks Ying Han
2011-04-22 4:32 ` KAMEZAWA Hiroyuki
2011-04-22 4:24 ` [PATCH V7 4/9] Add memcg kswapd thread pool Ying Han
2011-04-22 4:36 ` KAMEZAWA Hiroyuki
2011-04-22 4:49 ` Ying Han
2011-04-22 5:00 ` KAMEZAWA Hiroyuki
2011-04-22 5:53 ` Ying Han
2011-04-22 5:59 ` KAMEZAWA Hiroyuki
2011-04-22 6:10 ` Ying Han
2011-04-22 7:46 ` KAMEZAWA Hiroyuki
2011-04-22 7:59 ` Ying Han
2011-04-22 8:02 ` KAMEZAWA Hiroyuki
2011-04-24 23:26 ` KAMEZAWA Hiroyuki
2011-04-25 2:08 ` Ying Han
2011-04-22 6:02 ` Zhu Yanhai
2011-04-22 6:14 ` Ying Han
2011-04-22 5:39 ` KOSAKI Motohiro [this message]
2011-04-22 5:56 ` KAMEZAWA Hiroyuki
2011-04-22 4:24 ` [PATCH V7 5/9] Infrastructure to support per-memcg reclaim Ying Han
2011-04-22 4:38 ` KAMEZAWA Hiroyuki
2011-04-22 5:11 ` KOSAKI Motohiro
2011-04-22 5:59 ` Ying Han
2011-04-22 5:27 ` KOSAKI Motohiro
2011-04-22 6:00 ` Ying Han
2011-04-22 4:24 ` [PATCH V7 6/9] Implement the select_victim_node within memcg Ying Han
2011-04-22 4:39 ` KAMEZAWA Hiroyuki
2011-04-22 4:24 ` [PATCH V7 7/9] Per-memcg background reclaim Ying Han
2011-04-22 4:40 ` KAMEZAWA Hiroyuki
2011-04-22 6:00 ` KOSAKI Motohiro
2011-04-22 7:54 ` Ying Han
2011-04-22 8:44 ` KOSAKI Motohiro
2011-04-22 18:37 ` Ying Han
2011-04-25 2:21 ` [PATCH] vmscan,memcg: memcg aware swap token KOSAKI Motohiro
2011-04-25 9:47 ` KAMEZAWA Hiroyuki
2011-04-25 17:13 ` Ying Han
2011-04-26 2:08 ` KOSAKI Motohiro
2011-04-22 4:24 ` [PATCH V7 8/9] Add per-memcg zone "unreclaimable" Ying Han
2011-04-22 4:43 ` KAMEZAWA Hiroyuki
2011-04-22 6:13 ` KOSAKI Motohiro
2011-04-22 6:17 ` Ying Han
2011-04-22 4:24 ` [PATCH V7 9/9] Enable per-memcg background reclaim Ying Han
2011-04-22 4:44 ` KAMEZAWA Hiroyuki
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20110422143957.FA6D.A69D9226@jp.fujitsu.com \
--to=kosaki.motohiro@jp.fujitsu.com \
--cc=akpm@linux-foundation.org \
--cc=balbir@linux.vnet.ibm.com \
--cc=cl@linux.com \
--cc=dave@linux.vnet.ibm.com \
--cc=hannes@cmpxchg.org \
--cc=hughd@google.com \
--cc=kamezawa.hiroyu@jp.fujitsu.com \
--cc=linux-mm@kvack.org \
--cc=lizf@cn.fujitsu.com \
--cc=mel@csn.ul.ie \
--cc=mhocko@suse.cz \
--cc=minchan.kim@gmail.com \
--cc=nishimura@mxp.nes.nec.co.jp \
--cc=riel@redhat.com \
--cc=tj@kernel.org \
--cc=xemul@openvz.org \
--cc=yinghan@google.com \
--cc=zhu.yanhai@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox