From: "Serge E. Hallyn" <serue@us.ibm.com>
To: Paul Menage <menage@google.com>
Cc: Sam Vilain <sam@vilain.net>,
Srivatsa Vaddagiri <vatsa@in.ibm.com>,
ckrm-tech@lists.sourceforge.net, linux-kernel@vger.kernel.org,
xemul@sw.ru, dev@sw.ru, pj@sgi.com,
"Eric W. Biederman" <ebiederm@xmission.com>,
winget@google.com, containers@lists.osdl.org,
"Serge E. Hallyn" <serue@us.ibm.com>,
akpm@linux-foundation.org
Subject: Re: [ckrm-tech] [PATCH 0/2] resource control file system - aka containers on top of nsproxy!
Date: Fri, 9 Mar 2007 10:50:17 -0600 [thread overview]
Message-ID: <20070309165017.GF5948@sergelap.austin.ibm.com> (raw)
In-Reply-To: <6599ad830703080110i33405501tb12bf8e58bf829c9@mail.gmail.com>
Quoting Paul Menage (menage@google.com):
> On 3/7/07, Sam Vilain <sam@vilain.net> wrote:
> >
> >Ok, they share this characteristic with namespaces: that they group
> >processes.
Namespaces have a side effect of grouping processes, but a namespace is
not defined by 'grouping proceses.' A container is, in fact, a group of
processes.
> > So, they conceptually hang off task_struct. But we put them
> >on ns_proxy because we've got this vague notion that things might be
> >better that way.
>
> Remember that I'm not the one pushing to move them into ns_proxy.
> These patches are all Srivatsa's work. Despite that fact that they say
> "Signed-off-by: Paul Menage", I'd never seen them before they were
> posted to LKML, and I'm not sure that they're the right approach.
> (Although some form of unification might be good).
The nsproxy container subsystem could be said to be that unification.
If we really wanted to I suppose we could now always mount the nsproxy
subsystem, get rid of tsk->nsproxy, and always get thta through it's
nsproxy subsystem container. But then that causes trouble with being
able to mount a hierarachy like
mount -t container -o ns,cpuset
so we'd have to fix something. It also slows things down...
> >>> about this you still insist on calling this sub-system specific stuff
> >>> the "container",
> >>>
> >> Uh, no. I'm trying to call a *grouping* of processes a container.
> >>
> >
> >Ok, so is this going to supplant the namespaces too?
>
> I don't know. It would be nice to have a single object hanging off the
> task struct that contains all the various grouping pointers. Having
The namespaces aren't grouping pointers, they are resource id tables.
I stand by my earlier observation that placing namespace pointers and
grouping pointers in the same structure means that pointer will end up
pointing to itself.
> something that was flexible enough to handle all the required
> behaviours, or else allowing completely different behaviours for
> different subsets of that structure, could be the fiddly bit.
>
> See my expanded reply to Eric' earlier post for a possible way of
> unifying them, and simplifying the nsproxy and container.c code in the
> process.
Doesn't ring a bell, I'll have to look around for that...
> >
> > - resource groups (I get a strange feeling of d?j? v? there)
>
> Resource groups isn't a terrible name for them (although I'd be
I still like 'rug' for resource usage groups :)
-serge
next prev parent reply other threads:[~2007-03-09 16:50 UTC|newest]
Thread overview: 125+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-01 13:35 [PATCH 0/2] resource control file system - aka containers on top of nsproxy! Srivatsa Vaddagiri
2007-03-01 13:45 ` [PATCH 1/2] rcfs core patch Srivatsa Vaddagiri
2007-03-01 16:31 ` Serge E. Hallyn
2007-03-01 16:46 ` Srivatsa Vaddagiri
2007-03-02 5:06 ` [ckrm-tech] " Balbir Singh
2007-03-03 9:38 ` Srivatsa Vaddagiri
2007-03-08 3:12 ` Eric W. Biederman
2007-03-08 9:10 ` Paul Menage
2007-03-09 0:38 ` Herbert Poetzl
2007-03-09 9:07 ` Kirill Korotaev
2007-03-09 13:29 ` Herbert Poetzl
2007-03-09 17:57 ` Srivatsa Vaddagiri
2007-03-10 1:19 ` Herbert Poetzl
2007-03-11 16:36 ` Serge E. Hallyn
2007-03-12 23:16 ` Herbert Poetzl
2007-03-08 10:13 ` Srivatsa Vaddagiri
2007-03-09 0:48 ` Herbert Poetzl
2007-03-09 2:35 ` Paul Jackson
2007-03-09 9:23 ` Kirill Korotaev
2007-03-09 9:38 ` Paul Jackson
2007-03-09 13:21 ` Herbert Poetzl
2007-03-11 17:09 ` Kirill Korotaev
2007-03-12 23:00 ` Herbert Poetzl
2007-03-13 8:28 ` Kirill Korotaev
2007-03-13 13:55 ` Herbert Poetzl
2007-03-13 14:11 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-03-13 15:52 ` Herbert Poetzl
2007-03-09 18:14 ` Srivatsa Vaddagiri
2007-03-09 19:25 ` Paul Jackson
2007-03-10 1:00 ` Herbert Poetzl
2007-03-10 1:31 ` Paul Jackson
2007-03-10 0:56 ` Herbert Poetzl
2007-03-09 16:16 ` Serge E. Hallyn
2007-03-01 13:50 ` [PATCH 2/2] cpu_accounting controller Srivatsa Vaddagiri
2007-03-01 19:39 ` [PATCH 0/2] resource control file system - aka containers on top of nsproxy! Paul Jackson
2007-03-02 15:45 ` Kirill Korotaev
2007-03-02 16:52 ` Andrew Morton
2007-03-02 17:25 ` Kirill Korotaev
2007-03-03 17:45 ` Herbert Poetzl
2007-03-03 21:22 ` Paul Jackson
2007-03-05 17:47 ` Srivatsa Vaddagiri
2007-03-03 9:36 ` Srivatsa Vaddagiri
2007-03-03 10:21 ` Paul Jackson
2007-03-05 17:02 ` Srivatsa Vaddagiri
2007-03-03 17:32 ` Herbert Poetzl
2007-03-05 17:34 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-03-05 18:39 ` Herbert Poetzl
2007-03-06 10:39 ` Srivatsa Vaddagiri
2007-03-06 13:28 ` Herbert Poetzl
2007-03-06 16:21 ` Srivatsa Vaddagiri
2007-03-07 2:32 ` Paul Menage
2007-03-07 17:30 ` Srivatsa Vaddagiri
2007-03-07 17:29 ` Paul Menage
2007-03-07 17:52 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-03-07 17:32 ` Srivatsa Vaddagiri
2007-03-07 17:43 ` Serge E. Hallyn
2007-03-07 17:46 ` Paul Menage
2007-03-07 23:16 ` Eric W. Biederman
2007-03-08 11:39 ` Srivatsa Vaddagiri
2007-03-07 18:00 ` Srivatsa Vaddagiri
2007-03-07 20:58 ` Serge E. Hallyn
2007-03-07 21:20 ` Paul Menage
2007-03-07 21:59 ` Serge E. Hallyn
2007-03-07 22:13 ` Dave Hansen
2007-03-07 23:13 ` Eric W. Biederman
2007-03-12 14:11 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-03-07 22:32 ` Eric W. Biederman
2007-03-07 23:18 ` Paul Menage
2007-03-08 0:35 ` Sam Vilain
2007-03-08 0:42 ` Paul Menage
2007-03-08 0:53 ` Sam Vilain
2007-03-08 0:58 ` [ckrm-tech] " Paul Menage
2007-03-08 1:32 ` Eric W. Biederman
2007-03-08 1:35 ` Paul Menage
2007-03-08 2:25 ` Eric W. Biederman
2007-03-09 0:56 ` Herbert Poetzl
2007-03-09 0:53 ` Herbert Poetzl
2007-03-09 18:19 ` Srivatsa Vaddagiri
2007-03-09 19:36 ` Paul Jackson
2007-03-09 21:52 ` Herbert Poetzl
2007-03-09 22:06 ` Paul Jackson
2007-03-12 14:01 ` Srivatsa Vaddagiri
2007-03-12 15:15 ` Srivatsa Vaddagiri
2007-03-12 20:26 ` Paul Jackson
2007-03-09 4:30 ` Paul Jackson
2007-03-08 2:47 ` Sam Vilain
2007-03-08 2:57 ` Paul Menage
2007-03-08 3:32 ` Sam Vilain
2007-03-08 6:10 ` Matt Helsley
2007-03-08 6:44 ` Eric W. Biederman
2007-03-09 1:06 ` Herbert Poetzl
2007-03-10 9:06 ` Sam Vilain
2007-03-11 21:15 ` Paul Jackson
2007-03-12 9:35 ` Sam Vilain
2007-03-12 10:00 ` Paul Menage
2007-03-12 23:21 ` Herbert Poetzl
2007-03-13 2:25 ` Paul Menage
2007-03-13 15:57 ` Herbert Poetzl
2007-03-09 4:37 ` Paul Jackson
2007-03-08 6:32 ` Eric W. Biederman
2007-03-08 9:10 ` Paul Menage
2007-03-09 16:50 ` Serge E. Hallyn [this message]
2007-03-22 14:08 ` Srivatsa Vaddagiri
2007-03-22 14:39 ` Serge E. Hallyn
2007-03-22 14:56 ` Srivatsa Vaddagiri
2007-03-09 4:27 ` Paul Jackson
2007-03-10 8:52 ` Sam Vilain
2007-03-10 9:11 ` Paul Jackson
2007-03-09 16:34 ` Srivatsa Vaddagiri
2007-03-09 16:41 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-03-09 22:09 ` Paul Menage
2007-03-10 2:02 ` Srivatsa Vaddagiri
2007-03-10 3:19 ` [ckrm-tech] " Srivatsa Vaddagiri
2007-03-12 15:07 ` Srivatsa Vaddagiri
2007-03-12 15:56 ` Serge E. Hallyn
2007-03-12 16:20 ` Srivatsa Vaddagiri
2007-03-12 17:25 ` Serge E. Hallyn
2007-03-12 21:15 ` Sam Vilain
2007-03-12 23:31 ` Herbert Poetzl
2007-03-13 2:22 ` Srivatsa Vaddagiri
2007-03-08 0:50 ` Sam Vilain
2007-03-08 11:30 ` Srivatsa Vaddagiri
2007-03-09 1:16 ` Herbert Poetzl
2007-03-09 18:41 ` Srivatsa Vaddagiri
2007-03-10 2:03 ` Herbert Poetzl
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