From: Arjan van de Ven <arjan@infradead.org>
To: Balbir Singh <balbir@in.ibm.com>
Cc: Linux MM <linux-mm@kvack.org>,
dev@openvz.org, ckrm-tech@lists.sourceforge.net,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
haveblue@us.ibm.com, rohitseth@google.com
Subject: Re: [RFC][PATCH 8/8] RSS controller support reclamation
Date: Thu, 09 Nov 2006 20:45:43 +0100 [thread overview]
Message-ID: <1163101543.3138.528.camel@laptopd505.fenrus.org> (raw)
In-Reply-To: <20061109193636.21437.11778.sendpatchset@balbir.in.ibm.com>
On Fri, 2006-11-10 at 01:06 +0530, Balbir Singh wrote:
>
> Reclaim memory as we hit the max_shares limit. The code for reclamation
> is inspired from Dave Hansen's challenged memory controller and from the
> shrink_all_memory() code
Hmm.. I seem to remember that all previous RSS rlimit attempts actually
fell flat on their face because of the reclaim-on-rss-overflow behavior;
in the shared page / cached page (equally important!) case, it means
process A (or container A) suddenly penalizes process B (or container B)
by making B have pagecache misses because A was using a low RSS limit.
Unmapping the page makes sense, sure, and even moving then to inactive
lists or whatever that is called in the vm today, but reclaim... that's
expensive...
next prev parent reply other threads:[~2006-11-09 19:45 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-09 19:35 [RFC][PATCH 0/8] RSS controller for containers Balbir Singh
2006-11-09 19:35 ` [RFC][PATCH 1/8] Fix resource groups parsing, while assigning shares Balbir Singh
2006-11-09 19:35 ` [RFC][PATCH 2/8] RSS controller setup Balbir Singh
2006-11-09 19:35 ` [RFC][PATCH 3/8] RSS controller add callbacks Balbir Singh
2006-11-09 19:36 ` [RFC][PATCH 4/8] RSS controller accounting Balbir Singh
2006-11-10 9:06 ` Pavel Emelianov
2006-11-10 9:29 ` Balbir Singh
2006-11-09 19:36 ` [RFC][PATCH 5/8] RSS controller task migration support Balbir Singh
2006-11-09 19:36 ` [RFC][PATCH 6/8] RSS controller shares allocation Balbir Singh
2006-11-10 9:11 ` Pavel Emelianov
2006-11-10 10:27 ` [ckrm-tech] " Balbir Singh
2006-11-10 10:32 ` Pavel Emelianov
2006-11-10 12:55 ` Balbir Singh
2006-11-09 19:36 ` [RFC][PATCH 7/8] RSS controller fix resource groups parsing Balbir Singh
2006-11-10 9:13 ` Pavel Emelianov
2006-11-10 9:32 ` Balbir Singh
2006-11-09 19:36 ` [RFC][PATCH 8/8] RSS controller support reclamation Balbir Singh
2006-11-09 19:45 ` Arjan van de Ven [this message]
2006-11-10 1:56 ` [ckrm-tech] " Balbir Singh
2006-11-10 8:54 ` Pavel Emelianov
2006-11-10 9:16 ` Balbir Singh
2006-11-10 9:29 ` Pavel Emelianov
2006-11-10 12:42 ` Balbir Singh
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