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From: Herbert Poetzl <herbert@13thfloor.at>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Pavel Emelianov <xemul@sw.ru>,
	Kirill@smtp.osdl.org, Linux@smtp.osdl.org,
	containers@lists.osdl.org, Paul Menage <menage@google.com>,
	List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC][PATCH 2/7] RSS controller core
Date: Fri, 9 Mar 2007 17:48:55 +0100	[thread overview]
Message-ID: <20070309164855.GB3647@MAIL.13thfloor.at> (raw)
In-Reply-To: <20070306140036.4e85bd2f.akpm@linux-foundation.org>

On Tue, Mar 06, 2007 at 02:00:36PM -0800, Andrew Morton wrote:
> On Tue, 06 Mar 2007 17:55:29 +0300
> Pavel Emelianov <xemul@sw.ru> wrote:
> 
> > +struct rss_container {
> > +	struct res_counter res;
> > +	struct list_head page_list;
> > +	struct container_subsys_state css;
> > +};
> > +
> > +struct page_container {
> > +	struct page *page;
> > +	struct rss_container *cnt;
> > +	struct list_head list;
> > +};
> 
> ah. This looks good. I'll find a hunk of time to go through this work
> and through Paul's patches. It'd be good to get both patchsets lined
> up in -mm within a couple of weeks. But..

doesn't look so good for me, mainly becaus of the 
additional per page data and per page processing

on 4GB memory, with 100 guests, 50% shared for each
guest, this basically means ~1mio pages, 500k shared
and 1500k x sizeof(page_container) entries, which
roughly boils down to ~25MB of wasted memory ...

increase the amount of shared pages and it starts
getting worse, but maybe I'm missing something here

> We need to decide whether we want to do per-container memory
> limitation via these data structures, or whether we do it via a
> physical scan of some software zone, possibly based on Mel's patches.

why not do simple page accounting (as done currently
in Linux) and use that for the limits, without
keeping the reference from container to page?

best,
Herbert

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

  reply	other threads:[~2007-03-09 16:48 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 [this message]
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
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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