From: Mike Galbraith <efault@gmx.de>
To: Daniel Phillips <phillips@arcor.de>
Cc: Davide Libenzi <davidel@xmailserver.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [patch] SCHED_SOFTRR starve-free linux scheduling policy ...
Date: Sun, 10 Aug 2003 08:06:59 +0200 [thread overview]
Message-ID: <5.2.1.1.2.20030810075319.019c7a90@pop.gmx.net> (raw)
In-Reply-To: <200308100058.16261.phillips@arcor.de>
At 12:58 AM 8/10/2003 +0100, Daniel Phillips wrote:
>On Saturday 09 August 2003 18:47, Mike Galbraith wrote:
> > 1. SCHED_SOFTRR tasks can disturb (root) SCHED_RR/SCHED_FIFO tasks as is.
>
>What do you mean by "disturb"?
Preempt, and/or occupy cpu space which would otherwise be available for the
root realtime task. If a SCHED_SOFTRR task or tasks share the same queue
with an SCHED_RR task, or occupy a higher queue, runtime of the
SCHED_SOFTRR tasks[s] will have an effect on the root realtime task. OTOH,
if SCHED_SOFTRR queues were below the 'full potency' realtime queues, they
would be able to neither preempt, not round-robin with the root authorized
realtime task.
-Mike
next prev parent reply other threads:[~2003-08-10 6:02 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.55.0307131442470.15022@bigblue.dev.mcafeelabs.c om>
2003-07-14 7:11 ` [patch] SCHED_SOFTRR starve-free linux scheduling policy Mike Galbraith
2003-07-13 21:51 ` Davide Libenzi
2003-08-09 14:05 ` Daniel Phillips
2003-08-09 17:47 ` Mike Galbraith
2003-08-09 23:58 ` Daniel Phillips
2003-08-10 6:06 ` Mike Galbraith [this message]
2003-08-10 0:41 ` Daniel Phillips
2003-08-10 6:41 ` Mike Galbraith
2003-08-10 15:46 ` Daniel Phillips
2003-08-10 17:49 ` Mike Galbraith
2003-08-10 20:28 ` Daniel Phillips
2003-08-11 5:31 ` Mike Galbraith
2003-08-11 13:54 ` Takashi Iwai
2003-08-10 2:05 ` Roger Larsson
2003-08-10 5:43 ` Nick Piggin
2003-08-10 7:41 ` Mike Galbraith
2003-08-10 7:56 ` Nick Piggin
2003-08-10 8:18 ` Mike Galbraith
2003-08-10 9:19 ` jw schultz
2003-08-11 17:01 ` Roger Larsson
2003-08-11 17:25 ` Takashi Iwai
[not found] ` <200308100405.52858.roger.larsson@skelleftea.mail.telia.com >
2003-08-10 7:11 ` Mike Galbraith
2003-08-12 7:23 ` Rob Landley
2003-08-12 23:35 ` Pavel Machek
2003-08-13 6:26 ` Mike Galbraith
2003-08-13 9:41 ` Pavel Machek
2003-07-14 7:12 ` Davide Libenzi
2003-07-14 7:24 ` Jamie Lokier
2003-07-14 7:35 ` Davide Libenzi
2003-07-14 9:11 ` Mike Galbraith
[not found] ` <Pine.LNX.4.55.0307140004390.3435@bigblue.dev.mcafeelabs.co m>
2003-07-14 8:14 ` Mike Galbraith
2003-07-14 15:09 ` Davide Libenzi
[not found] ` <Pine.LNX.4.55.0307140805220.4371@bigblue.dev.mcafeelabs.co m>
2003-07-14 16:06 ` Mike Galbraith
2003-07-14 17:22 ` Davide Libenzi
[not found] ` <Pine.LNX.4.55.0307141015010.4828@bigblue.dev.mcafeelabs.co m>
2003-07-15 4:56 ` Mike Galbraith
2003-07-15 15:47 ` Davide Libenzi
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