Re: [PATCH v4] sched: automated per session task groups

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From: Ray Lee
Date: Sunday, December 5, 2010 - 12:47 am

On Sat, Dec 4, 2010 at 3:43 PM, Colin Walters <walters@verbum.org> wrote:

Consider a multi-user machine. `nice` is an orthogonal concern in that
case. Therefore, fixing nice doesn't address all issues. Also: Most
linux systems are multi-user (root and the physical tty user.)
Further, even a single user wears multiple hats on a single system.
The idea is to infer those hats, and deal with them fairly.

No one is taking nice away from you. Keep using it if you like.

If you want to allow users to explicitly specify group scheduling,
then good news: we already have that feature. You just seem to not be
using it. Much like the other 99.993% of us.

The kernel is supposed to have *sane defaults*. That's what is under
discussion here.

~r.
--
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Messages in current thread:
[RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Tue Oct 19, 2:16 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Peter Zijlstra, (Tue Oct 19, 2:26 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Peter Zijlstra, (Tue Oct 19, 2:29 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Tue Oct 19, 2:39 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Tue Oct 19, 2:42 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Peter Zijlstra, (Tue Oct 19, 2:43 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Tue Oct 19, 2:46 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Tue Oct 19, 4:29 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Tue Oct 19, 6:12 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Linus Torvalds, (Tue Oct 19, 8:28 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Tue Oct 19, 11:13 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Tue Oct 19, 11:53 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Markus Trippelsdorf, (Wed Oct 20, 6:55 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Wed Oct 20, 7:41 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Thu Oct 21, 12:55 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Thu Oct 21, 1:11 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Thu Oct 21, 1:39 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Markus Trippelsdorf, (Thu Oct 21, 1:48 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Thu Oct 21, 1:52 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Peter Zijlstra, (Thu Oct 21, 3:28 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mathieu Desnoyers, (Thu Oct 21, 3:51 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Peter Zijlstra, (Thu Oct 21, 4:25 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Thu Oct 21, 4:27 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mathieu Desnoyers, (Thu Oct 21, 9:22 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Oleg Nesterov, (Thu Oct 21, 9:29 am)
Re: [RFC/RFT PATCH] sched: automated per tty task groups, Mike Galbraith, (Thu Oct 21, 12:11 pm)
[RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Tue Oct 26, 12:07 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Tue Oct 26, 12:29 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Linus Torvalds, (Thu Nov 11, 11:34 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Thu Nov 11, 12:08 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Markus Trippelsdorf, (Thu Nov 11, 12:15 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Thu Nov 11, 12:35 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Linus Torvalds, (Thu Nov 11, 12:37 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Markus Trippelsdorf, (Thu Nov 11, 12:38 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Thu Nov 11, 12:58 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Sun Nov 14, 10:19 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Markus Trippelsdorf, (Sun Nov 14, 10:49 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Sun Nov 14, 11:10 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Linus Torvalds, (Sun Nov 14, 12:28 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Markus Trippelsdorf, (Sun Nov 14, 1:27 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Valdis.Kletnieks, (Mon Nov 15, 3:41 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 10:03 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Linus Torvalds, (Tue Nov 16, 10:11 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Tue Nov 16, 10:42 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Peter Zijlstra, (Tue Nov 16, 11:08 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 11:16 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Peter Zijlstra, (Tue Nov 16, 11:21 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Linus Torvalds, (Tue Nov 16, 11:49 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Peter Zijlstra, (Tue Nov 16, 11:59 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Peter Zijlstra, (Tue Nov 16, 12:13 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Peter Zijlstra, (Tue Nov 16, 12:25 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Linus Torvalds, (Tue Nov 16, 12:35 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Markus Trippelsdorf, (Tue Nov 16, 12:42 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Peter Zijlstra, (Tue Nov 16, 12:43 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Linus Torvalds, (Tue Nov 16, 12:45 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Linus Torvalds, (Tue Nov 16, 12:49 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Tue Nov 16, 12:57 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 1:03 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 1:05 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 1:28 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 1:31 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 1:33 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 1:36 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 1:50 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 2:08 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 2:14 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 2:17 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 2:19 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Tue Nov 16, 5:21 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Wed Nov 17, 8:01 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Wed Nov 17, 3:34 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Wed Nov 17, 3:45 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Wed Nov 17, 4:49 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Hans-Peter Jansen, (Thu Nov 18, 3:33 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Thu Nov 18, 4:12 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Thu Nov 18, 4:43 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Thu Nov 18, 5:02 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Thu Nov 18, 5:07 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Thu Nov 18, 5:42 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Thu Nov 18, 5:59 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Thu Nov 18, 6:23 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mathieu Desnoyers, (Thu Nov 18, 8:15 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Fri Nov 19, 2:02 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mathieu Desnoyers, (Fri Nov 19, 5:55 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mathieu Desnoyers, (Fri Nov 19, 6:20 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Fri Nov 19, 7:24 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Fri Nov 19, 7:55 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Fri Nov 19, 9:34 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Linus Torvalds, (Fri Nov 19, 10:51 am)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Fri Nov 19, 12:31 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Linus Torvalds, (Fri Nov 19, 12:48 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Fri Nov 19, 6:13 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Fri Nov 19, 6:33 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Sat Nov 20, 8:41 am)
[PATCH v4] sched: automated per session task groups, Mike Galbraith, (Sat Nov 20, 12:35 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Sat Nov 20, 12:47 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Mike Galbraith, (Sat Nov 20, 12:51 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Sat Nov 20, 1:25 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Konstantin Svist, (Sat Nov 20, 3:02 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Samuel Thibault, (Sat Nov 20, 3:15 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Thomas Fjellstrom, (Sat Nov 20, 3:18 pm)
Re: [RFC/RFT PATCH v3] sched: automated per tty task groups, Lennart Poettering, (Mon Nov 22, 12:21 pm)
[tip:sched/core] sched: Add 'autogroup' scheduling feature ..., tip-bot for Mike Gal ..., (Tue Nov 30, 8:39 am)
Re: [PATCH v4] sched: automated per session task groups, Colin Walters, (Sat Dec 4, 10:39 am)
Re: [PATCH v4] sched: automated per session task groups, Linus Torvalds, (Sat Dec 4, 11:33 am)
Re: [PATCH v4] sched: automated per session task groups, Colin Walters, (Sat Dec 4, 1:01 pm)
Re: [PATCH v4] sched: automated per session task groups, Linus Torvalds, (Sat Dec 4, 3:39 pm)
Re: [PATCH v4] sched: automated per session task groups, Colin Walters, (Sat Dec 4, 4:43 pm)
Re: [PATCH v4] sched: automated per session task groups, Linus Torvalds, (Sat Dec 4, 5:31 pm)
Re: [PATCH v4] sched: automated per session task groups, Ray Lee, (Sun Dec 5, 12:47 am)
Re: [PATCH v4] sched: automated per session task groups, Nikos Chantziaras, (Sun Dec 5, 4:11 am)
Re: [PATCH v4] sched: automated per session task groups, Mike Galbraith, (Sun Dec 5, 4:36 am)
Re: [PATCH v4] sched: automated per session task groups, Colin Walters, (Sun Dec 5, 12:22 pm)
Re: [PATCH v4] sched: automated per session task groups, Linus Torvalds, (Sun Dec 5, 1:47 pm)
Re: [PATCH v4] sched: automated per session task groups, Colin Walters, (Sun Dec 5, 3:47 pm)
Re: [PATCH v4] sched: automated per session task groups, Valdis.Kletnieks, (Sun Dec 5, 5:28 pm)
Re: [PATCH v4] sched: automated per session task groups, Peter Zijlstra, (Tue Dec 7, 11:51 am)
[tip:sched/core] sched, autogroup: Fix potential access to ..., tip-bot for Mike Gal ..., (Tue Jan 4, 7:18 am)