From: Ying Han <yinghan@google.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Michal Hocko <mhocko@suse.cz>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>,
Hugh Dickins <hughd@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Glauber Costa <glommer@parallels.com>,
Kir Kolyshkin <kir@parallels.com>,
Pavel Emelianov <xemul@parallels.com>,
GregThelen <gthelen@google.com>,
"pjt@google.com" <pjt@google.com>,
Tim Hockin <thockin@google.com>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Paul Menage <paul@paulmenage.org>,
James Bottomley <James.Bottomley@hansenpartnership.com>
Subject: Re: [RFD] Isolated memory cgroups again
Date: Fri, 21 Oct 2011 13:00:18 -0700 [thread overview]
Message-ID: <CALWz4iw9OGUNKjD5y2xGDGaesTjwUT5TOL2A7wDd5apy4M5fnw@mail.gmail.com> (raw)
In-Reply-To: <20111021121759.429d8222.kamezawa.hiroyu@jp.fujitsu.com>
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On Thursday, October 20, 2011, KAMEZAWA Hiroyuki <
kamezawa.hiroyu@jp.fujitsu.com> wrote:
> On Thu, 20 Oct 2011 19:45:55 -0700
> Michal Hocko <mhocko@suse.cz> wrote:
>
>> On Thu 20-10-11 16:41:27, Ying Han wrote:
>> [...]
>> > Hi Michal:
>>
>> Hi,
>>
>> >
>> > I didn't read through the patch itself but only the description. If we
>> > wanna protect a memcg being reclaimed from under global memory
>> > pressure, I think we can approach it by making change on soft_limit
>> > reclaim.
>> >
>> > I have a soft_limit change built on top of Johannes's patchset, which
>> > does basically soft_limit aware reclaim under global memory pressure.
>>
>> Is there any link to the patch(es)? I would be interested to look at
>> it before we discuss it.
>>
>
> I'd like to see it, too.
>
> Thanks,
> -Kame
>
Now I am at airport heading to Prague , I will try to post one before the
meeting if possible. The current patch is simple enough which most of the
work are reverting the existing soft limit implementation and then the new
logic is based on the memcg aware global reclaim.
The logic is based on reclaim priority, and we skip reclaim from certain
memcg(under soft limit) before getting down to DEF_PRIORITY - 3. This is
simple enough to get us start collecting some data result and I am looking
forward to discuss more thoughts in the meeting
--ying
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next prev parent reply other threads:[~2011-10-21 20:00 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-20 1:33 [RFD] Isolated memory cgroups again Michal Hocko
2011-10-20 1:59 ` KAMEZAWA Hiroyuki
2011-10-20 16:30 ` Michal Hocko
2011-10-21 16:04 ` Balbir Singh
2011-10-22 9:26 ` Michal Hocko
2011-10-21 16:11 ` Balbir Singh
2011-10-20 8:55 ` Glauber Costa
2011-10-20 16:42 ` Michal Hocko
2011-10-20 23:41 ` Ying Han
2011-10-21 2:45 ` Michal Hocko
2011-10-21 3:17 ` KAMEZAWA Hiroyuki
2011-10-21 20:00 ` Ying Han [this message]
2011-10-22 9:31 ` Michal Hocko
2011-10-21 8:39 ` Glauber Costa
2011-10-21 12:16 ` Johannes Weiner
2011-10-22 9:47 ` Michal Hocko
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