From: Peter Zijlstra <peterz@infradead.org>
To: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Cc: balbir@linux.vnet.ibm.com,
Linux Kernel <linux-kernel@vger.kernel.org>,
Linux Containers <containers@lists.osdl.org>,
linux-mm <linux-mm@kvack.org>, Balbir Singh <balbir@in.ibm.com>,
Pavel Emelianov <xemul@sw.ru>, Paul Menage <menage@google.com>,
Kirill Korotaev <dev@sw.ru>,
devel@openvz.org, Andrew Morton <akpm@linux-foundation.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Herbert Poetzl <herbert@13thfloor.at>,
Roy Huang <royhuang9@gmail.com>, Aubrey Li <aubreylee@gmail.com>,
riel@redhat
Subject: Re: [RFC] mm-controller
Date: Mon, 25 Jun 2007 18:22:41 +0200 [thread overview]
Message-ID: <1182788561.6174.70.camel@lappy> (raw)
In-Reply-To: <467BFA47.4050802@linux.vnet.ibm.com>
On Fri, 2007-06-22 at 22:05 +0530, Vaidyanathan Srinivasan wrote:
> Merging both limits will eliminate the issue, however we would need
> individual limits for pagecache and RSS for better control. There are
> use cases for pagecache_limit alone without RSS_limit like the case of
> database application using direct IO, backup applications and
> streaming applications that does not make good use of pagecache.
I'm aware that some people want this. However we rejected adding a
pagecache limit to the kernel proper on grounds that reclaim should do a
better job.
And now we're sneaking it in the backdoor.
If we're going to do this, get it in the kernel proper first.
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Cc: balbir@linux.vnet.ibm.com,
Linux Kernel <linux-kernel@vger.kernel.org>,
Linux Containers <containers@lists.osdl.org>,
linux-mm <linux-mm@kvack.org>, Balbir Singh <balbir@in.ibm.com>,
Pavel Emelianov <xemul@sw.ru>, Paul Menage <menage@google.com>,
Kirill Korotaev <dev@sw.ru>,
devel@openvz.org, Andrew Morton <akpm@linux-foundation.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Herbert Poetzl <herbert@13thfloor.at>,
Roy Huang <royhuang9@gmail.com>, Aubrey Li <aubreylee@gmail.com>,
riel@redhat
Subject: Re: [RFC] mm-controller
Date: Mon, 25 Jun 2007 18:22:41 +0200 [thread overview]
Message-ID: <1182788561.6174.70.camel@lappy> (raw)
In-Reply-To: <467BFA47.4050802@linux.vnet.ibm.com>
On Fri, 2007-06-22 at 22:05 +0530, Vaidyanathan Srinivasan wrote:
> Merging both limits will eliminate the issue, however we would need
> individual limits for pagecache and RSS for better control. There are
> use cases for pagecache_limit alone without RSS_limit like the case of
> database application using direct IO, backup applications and
> streaming applications that does not make good use of pagecache.
I'm aware that some people want this. However we rejected adding a
pagecache limit to the kernel proper on grounds that reclaim should do a
better job.
And now we're sneaking it in the backdoor.
If we're going to do this, get it in the kernel proper first.
--
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next prev parent reply other threads:[~2007-06-25 16:25 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-21 9:32 [RFC] mm-controller Peter Zijlstra
2007-06-21 9:32 ` Peter Zijlstra
2007-06-21 11:03 ` Balbir Singh
2007-06-21 11:03 ` Balbir Singh
2007-06-21 13:50 ` Peter Zijlstra
2007-06-21 13:50 ` Peter Zijlstra
2007-06-21 17:31 ` Balbir Singh
2007-06-21 17:31 ` Balbir Singh
2007-06-22 2:21 ` Pavel Emelianov
2007-06-22 2:21 ` Pavel Emelianov
2007-06-22 16:35 ` Vaidyanathan Srinivasan
2007-06-22 16:35 ` Vaidyanathan Srinivasan
2007-06-25 16:22 ` Peter Zijlstra [this message]
2007-06-25 16:22 ` Peter Zijlstra
2007-06-25 18:02 ` Vaidyanathan Srinivasan
2007-06-25 18:02 ` Vaidyanathan Srinivasan
2007-06-26 3:01 ` Balbir Singh
2007-06-26 3:01 ` Balbir Singh
2007-06-25 17:35 ` Paul Menage
2007-06-25 17:35 ` Paul Menage
2007-06-25 17:36 ` Paul Menage
2007-06-25 17:36 ` Paul Menage
2007-06-25 18:22 ` Vaidyanathan Srinivasan
2007-06-25 18:22 ` Vaidyanathan Srinivasan
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