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From: Herbert Poetzl <herbert@13thfloor.at>
To: Dave Hansen <hansendc@us.ibm.com>
Cc: Kirill Korotaev <dev@sw.ru>,
	containers@lists.osdl.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Paul Menage <menage@google.com>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Pavel Emelianov <xemul@sw.ru>
Subject: Re: [RFC][PATCH 4/7] RSS accounting hooks over the code
Date: Tue, 13 Mar 2007 00:54:52 +0100	[thread overview]
Message-ID: <20070312235452.GB11578@MAIL.13thfloor.at> (raw)
In-Reply-To: <1173718208.11945.54.camel@localhost.localdomain>

On Mon, Mar 12, 2007 at 09:50:08AM -0700, Dave Hansen wrote:
> On Mon, 2007-03-12 at 19:23 +0300, Kirill Korotaev wrote:
> > 
> > For these you essentially need per-container page->_mapcount counter,
> > otherwise you can't detect whether rss group still has the page 
> > in question being mapped in its processes' address spaces or not. 

> What do you mean by this?  You can always tell whether a process has a
> particular page mapped.  Could you explain the issue a bit more.  I'm
> not sure I get it.

OpenVZ wants to account _shared_ pages in a guest
different than separate pages, so that the RSS
accounted values reflect the actual used RAM instead
of the sum of all processes RSS' pages, which for
sure is more relevant to the administrator, but IMHO
not so terribly important to justify memory consuming
structures and sacrifice performance to get it right

YMMV, but maybe we can find a smart solution to the
issue too :)

best,
Herbert

> -- Dave
> 
> _______________________________________________
> Containers mailing list
> Containers@lists.osdl.org
> https://lists.osdl.org/mailman/listinfo/containers

  parent reply	other threads:[~2007-03-12 23:54 UTC|newest]

Thread overview: 129+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-03-06 14:42 [RFC][PATCH 0/7] Resource controllers based on process containers Pavel Emelianov
2007-03-06 14:49 ` [RFC][PATCH 1/7] Resource counters Pavel Emelianov
2007-03-07  4:03   ` Balbir Singh
2007-03-07  7:19     ` Pavel Emelianov
2007-03-09 16:37       ` Herbert Poetzl
2007-03-11  9:01         ` Pavel Emelianov
2007-03-11 19:00         ` Eric W. Biederman
2007-03-12  1:16           ` Herbert Poetzl
2007-03-13  9:09             ` Eric W. Biederman
2007-03-13  9:27               ` Pavel Emelianov
2007-03-13  9:49               ` [Devel] " Kirill Korotaev
2007-03-13 15:21               ` Herbert Poetzl
2007-03-13 15:41                 ` Pavel Emelianov
2007-03-13 16:07                   ` Srivatsa Vaddagiri
2007-03-14  7:12                     ` Pavel Emelianov
2007-03-15 16:51                       ` Eric W. Biederman
2007-03-13 16:32                   ` Herbert Poetzl
2007-03-06 14:55 ` [RFC][PATCH 2/7] RSS controller core Pavel Emelianov
2007-03-06 22:00   ` Andrew Morton
2007-03-09 16:48     ` Herbert Poetzl
2007-03-11  9:08       ` Pavel Emelianov
2007-03-11 14:32         ` Herbert Poetzl
2007-03-11 15:04           ` Pavel Emelianov
2007-03-12  0:41             ` Herbert Poetzl
2007-03-12  8:31               ` Pavel Emelianov
2007-03-12  9:55       ` Balbir Singh
2007-03-12 23:43         ` Herbert Poetzl
2007-03-13  1:57           ` Balbir Singh
2007-03-13  2:24             ` Srivatsa Vaddagiri
2007-03-13 16:06             ` Herbert Poetzl
2007-03-11 12:26     ` Kirill Korotaev
2007-03-11 12:51       ` Andrew Morton
2007-03-11 15:51         ` Balbir Singh
2007-03-11 19:34         ` Eric W. Biederman
2007-03-12  9:23           ` [Devel] " Kirill Korotaev
2007-03-13  9:26             ` Eric W. Biederman
2007-03-13 15:43               ` Kirill Korotaev
2007-03-12  1:00         ` Herbert Poetzl
2007-03-12  9:02           ` Pavel Emelianov
2007-03-12 21:11             ` Herbert Poetzl
2007-03-13  7:17               ` Pavel Emelianov
2007-03-13 15:05                 ` Herbert Poetzl
2007-03-13 15:32                   ` Pavel Emelianov
2007-03-13 15:10               ` Kirill Korotaev
2007-03-13 15:11                 ` Herbert Poetzl
2007-03-13 15:54                   ` Kirill Korotaev
2007-03-12 18:42           ` Dave Hansen
2007-03-12 22:41             ` Herbert Poetzl
2007-03-12 23:02               ` Dave Hansen
2007-03-18 16:58                 ` Eric W. Biederman
2007-03-13  6:04               ` Andrew Morton
2007-03-13 10:19                 ` [Devel] " Kirill Korotaev
2007-03-13 11:48                   ` Andrew Morton
2007-03-13 14:59                     ` Herbert Poetzl
2007-03-13 17:05                     ` Dave Hansen
2007-03-14 15:38                       ` Mel Gorman
2007-03-14 20:42                         ` Dave Hansen
2007-03-20 18:57                           ` Mel Gorman
2007-03-18 22:44                       ` [Devel] " Paul Menage
2007-03-19 17:41                         ` Eric W. Biederman
2007-03-13 17:26                 ` Dave Hansen
2007-03-13 19:09                   ` Alan Cox
2007-03-13 20:28                     ` Dave Hansen
2007-03-16  0:55                     ` Eric W. Biederman
2007-03-16 16:31                       ` Dave Hansen
2007-03-16 18:54                         ` Eric W. Biederman
2007-03-16 19:46                           ` Dave Hansen
2007-03-18 17:42                             ` Eric W. Biederman
2007-03-19 15:48                               ` Herbert Poetzl
2007-03-20 16:15                               ` controlling mmap()'d vs read/write() pages Dave Hansen
2007-03-20 21:19                                 ` Eric W. Biederman
2007-03-23  0:51                                   ` Herbert Poetzl
2007-03-23  5:57                                   ` Nick Piggin
2007-03-23 10:12                                     ` Eric W. Biederman
2007-03-23 10:47                                       ` Nick Piggin
2007-03-23 12:21                                         ` Eric W. Biederman
2007-03-28  7:33                                           ` Nick Piggin
2007-03-23 16:41                                       ` Dave Hansen
2007-03-23 18:16                                         ` Herbert Poetzl
2007-03-28  9:18                                           ` Balbir Singh
2007-03-14 16:47                   ` [RFC][PATCH 2/7] RSS controller core Mel Gorman
2007-03-07  5:37   ` Balbir Singh
2007-03-07  7:27     ` Pavel Emelianov
2007-03-06 14:58 ` [RFC][PATCH 3/7] Data structures changes for RSS accounting Pavel Emelianov
2007-03-11 19:13   ` Eric W. Biederman
2007-03-12 16:16     ` Kirill Korotaev
2007-03-12 16:48       ` Dave Hansen
2007-03-12 17:19         ` Pavel Emelianov
2007-03-12 17:27           ` Dave Hansen
2007-03-13  7:10             ` Pavel Emelianov
2007-03-12 17:21         ` Balbir Singh
2007-03-06 15:00 ` [RFC][PATCH 4/7] RSS accounting hooks over the code Pavel Emelianov
2007-03-11 19:14   ` Eric W. Biederman
2007-03-12 16:23     ` Kirill Korotaev
2007-03-12 16:50       ` Dave Hansen
2007-03-12 17:07         ` Kirill Korotaev
2007-03-12 17:33           ` Dave Hansen
2007-03-13  9:43             ` Eric W. Biederman
2007-03-12 23:54         ` Herbert Poetzl [this message]
2007-03-13  9:58           ` Eric W. Biederman
2007-03-13 10:25             ` Nick Piggin
2007-03-13 16:01               ` Eric W. Biederman
2007-03-14  3:51                 ` Nick Piggin
2007-03-14  6:42                   ` Balbir Singh
2007-03-14  6:57                     ` Nick Piggin
2007-03-14  7:48                       ` Balbir Singh
2007-03-14 13:25                         ` Vaidyanathan Srinivasan
2007-03-14 13:49                           ` Nick Piggin
2007-03-14 14:43                             ` Vaidyanathan Srinivasan
2007-03-14 16:16                             ` Kirill Korotaev
2007-03-15  5:01                               ` Nick Piggin
2007-03-15  5:44                                 ` Balbir Singh
2007-03-28 20:15               ` Ethan Solomita
2007-03-14 15:37   ` Cedric Le Goater
2007-03-14 15:45     ` Pavel Emelianov
2007-03-06 15:03 ` [RFC][PATCH 5/7] Per-container OOM killer and page reclamation Pavel Emelianov
2007-03-09 21:21   ` Balbir Singh
2007-03-11  8:41     ` Pavel Emelianov
2007-03-06 15:04 ` [RFC][PATCH 6/7] Account for the number of tasks within container Pavel Emelianov
2007-03-07  2:00   ` Paul Menage
2007-03-07  7:13     ` Pavel Emelianov
2007-03-08 13:49       ` Paul Menage
2007-03-11  8:36         ` Pavel Emelianov
2007-03-06 15:07 ` [RFC][PATCH 7/7] Account for the number of files opened " Pavel Emelianov
2007-03-07  2:02 ` [RFC][PATCH 0/7] Resource controllers based on process containers Paul Menage
2007-03-07  7:30   ` Pavel Emelianov
2007-03-07  6:52 ` Balbir Singh
2007-03-07  7:32   ` Pavel Emelianov
2007-03-07  9:43     ` Kirill Korotaev

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