From: Matthew Garrett <mjg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Cc: Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Arjan van de Ven <arjan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
Lennart Poettering
<mzxreary-uLTowLwuiw4b1SvskN2V4Q@public.gmane.org>,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
"Kirill A. Shutemov"
<kirill-oKw7cIdHH8eLwutG50LtGA@public.gmane.org>,
Paul Menage <menage-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Li Zefan <lizf-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Matt Helsley <matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Kay Sievers <kay.sievers-tD+1rO4QERM@public.gmane.org>,
harald-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
david-o55+BOBDEFg@public.gmane.org,
greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org
Subject: Re: [PATCH, v10 3/3] cgroups: introduce timer slack controller
Date: Mon, 17 Oct 2011 15:40:13 +0100 [thread overview]
Message-ID: <20111017144013.GA15447@srcf.ucam.org> (raw)
In-Reply-To: <1318861707.4172.32.camel@twins>
On Mon, Oct 17, 2011 at 04:28:27PM +0200, Peter Zijlstra wrote:
> On Mon, 2011-10-17 at 15:11 +0100, Matthew Garrett wrote:
> > Whether or not you want the animation to carry on animating is policy,
> > and you need something to be the policy agent. Let's say firefox is
> > invisible. I now grab a copy of its window contents. What do I get?
>
> An XDamage and repaint from the X client, after which your copy will
> complete and you get what you asked for?
An XDamage and then an asynchronous RPC call to the remote server to
identify the contents of the next frame before drawing them, plus some
sort of new synchronisation mechanism for blocking the X query until
that point?
> > in preference to merging a piece
> > of code that's functionally consistent with the rest of the cgroups
> > infrastructure?
>
> Yep.. because as of yet there isn't a sane use-case to warrant adding
> the maintenance burden. Any cgroup controller is functionally
> consistent, per definition, that doesn't make it useful or even sane.
Timers are a resource. People want to manage that resource. cgroups are
a convenient mechanism for managing resources.
--
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org
next prev parent reply other threads:[~2011-10-17 14:40 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-11 16:15 [PATCH, v10 0/3] Introduce timer slack controller Kirill A. Shutemov
2011-10-11 16:15 ` [PATCH, v10 1/3] hrtimer: introduce effective timer slack Kirill A. Shutemov
2011-10-11 16:15 ` [PATCH, v10 2/3] hrtimer: implement PR_GET_EFFECTIVE_TIMERSLACK Kirill A. Shutemov
2011-10-11 16:15 ` [PATCH, v10 3/3] cgroups: introduce timer slack controller Kirill A. Shutemov
[not found] ` <1318349729-3108-4-git-send-email-kirill-oKw7cIdHH8eLwutG50LtGA@public.gmane.org>
2011-10-11 16:49 ` Kirill A. Shutemov
2011-10-14 22:43 ` Andrew Morton
[not found] ` <20111014154348.ae6267aa.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2011-10-14 23:34 ` Kirill A. Shutemov
2011-10-15 11:20 ` Lennart Poettering
2011-10-15 19:11 ` Peter Zijlstra
2011-10-17 1:39 ` Lennart Poettering
[not found] ` <20111017013921.GA30035-kS5D54t9nk0aINubkmmoJbNAH6kLmebB@public.gmane.org>
2011-10-17 3:22 ` Matthew Garrett
[not found] ` <20111017032232.GA4816-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2011-10-17 5:21 ` Arjan van de Ven
[not found] ` <4E9BBB6D.4050004-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2011-10-17 7:36 ` Peter Zijlstra
2011-10-17 9:38 ` Thomas Gleixner
2011-10-17 12:46 ` Matthew Garrett
[not found] ` <20111017124647.GA12838-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2011-10-17 13:06 ` Peter Zijlstra
2011-10-17 14:11 ` Matthew Garrett
[not found] ` <20111017141147.GA14581-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2011-10-17 14:28 ` Peter Zijlstra
2011-10-17 14:35 ` Arjan van de Ven
[not found] ` <4E9C3D39.9020109-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2011-10-17 14:45 ` Peter Zijlstra
2011-10-17 14:40 ` Matthew Garrett [this message]
2011-10-17 14:49 ` Peter Zijlstra
2011-10-17 14:59 ` Matthew Garrett
2011-10-17 15:11 ` Peter Zijlstra
2011-10-17 15:19 ` Matthew Garrett
[not found] ` <20111017151920.GA16664-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2011-10-17 15:21 ` Peter Zijlstra
2011-10-17 15:31 ` Matthew Garrett
[not found] ` <20111017153142.GA17047-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2011-10-17 16:36 ` Peter Zijlstra
2011-10-17 16:49 ` Matthew Garrett
2011-10-17 15:48 ` Alan Cox
[not found] ` <20111017164839.3887ee3e-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
2011-10-17 16:33 ` Peter Zijlstra
2011-10-17 15:18 ` Peter Zijlstra
2011-10-17 7:34 ` Peter Zijlstra
2011-10-17 13:55 ` Lennart Poettering
2011-10-17 7:28 ` Peter Zijlstra
2011-10-17 19:46 ` Valdis.Kletnieks-PjAqaU27lzQ
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20111017144013.GA15447@srcf.ucam.org \
--to=mjg-h+wxahxf7alqt0dzr+alfa@public.gmane.org \
--cc=akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org \
--cc=arjan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org \
--cc=containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org \
--cc=david-o55+BOBDEFg@public.gmane.org \
--cc=greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org \
--cc=harald-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org \
--cc=kay.sievers-tD+1rO4QERM@public.gmane.org \
--cc=kirill-oKw7cIdHH8eLwutG50LtGA@public.gmane.org \
--cc=linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=lizf-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org \
--cc=matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org \
--cc=menage-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org \
--cc=mzxreary-uLTowLwuiw4b1SvskN2V4Q@public.gmane.org \
--cc=peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org \
--cc=tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).