From: Ingo Molnar <mingo@elte.hu>
To: Bill Huey <billh@gnuppy.monkey.org>
Cc: Darren Hart <darren@dvhart.com>,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
"Stultz, John" <johnstul@us.ibm.com>,
Peter Williams <pwil3058@bigpond.net.au>,
"Siddha, Suresh B" <suresh.b.siddha@intel.com>,
Nick Piggin <nickpiggin@yahoo.com.au>
Subject: Re: RT task scheduling
Date: Fri, 7 Apr 2006 12:51:41 +0200 [thread overview]
Message-ID: <20060407105141.GA9972@elte.hu> (raw)
In-Reply-To: <20060407103926.GC11706@gnuppy.monkey.org>
* Bill Huey <billh@gnuppy.monkey.org> wrote:
> On Fri, Apr 07, 2006 at 11:19:46AM +0200, Ingo Molnar wrote:
> > -ENOPARSE. CPU binding brings with itself obvious disadvantages that
> > some applications are not ready to pay. CPU binding restricts the
> > scheduler from achieving best resource utilization. That may be fine for
> > some applications, but is not good enough for a good number of
> > applications. So in no way can any 'CPU binding mechanism' (which
> > already exists in multiple forms) replace the need and desire for a
> > globally scheduled class of RT tasks.
>
> You're discussing a different problem than what I'm talking about.
> [...]
no, i'm discussing precisely the point you raised:
>>> You should consider for a moment to allow for the binding of a
>>> thread to a CPU to determine the behavior of a SCHED_FIFO class task
>>> instead of creating a new run category. [...]
with the observation that 1) binding is already possible [so your
suggestion is apparently knocking on open doors] 2) binding is a
separate mechanism (not adequate for all workloads) and it is thus
orthogonal to what i'm trying to achieve with the "RT overload" stuff.
Really simple and straightforward observations i think.
Ingo
next prev parent reply other threads:[~2006-04-07 10:54 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-06 3:25 RT task scheduling Darren Hart
2006-04-06 4:19 ` Peter Williams
2006-04-06 17:24 ` Darren Hart
2006-04-06 23:02 ` Peter Williams
2006-04-06 7:37 ` Ingo Molnar
2006-04-06 14:55 ` Darren Hart
2006-04-06 18:16 ` Darren Hart
2006-04-06 22:35 ` Darren Hart
2006-04-07 22:58 ` Vernon Mauery
2006-04-06 23:06 ` Peter Williams
2006-04-07 3:07 ` Bill Huey
2006-04-07 7:11 ` Ingo Molnar
2006-04-07 8:39 ` Bill Huey
2006-04-07 9:11 ` Bill Huey
2006-04-07 9:19 ` Ingo Molnar
2006-04-07 10:39 ` Bill Huey
2006-04-07 10:51 ` Ingo Molnar [this message]
2006-04-07 11:14 ` Bill Huey
2006-04-07 11:29 ` Ingo Molnar
2006-04-07 22:18 ` Bill Huey
2006-04-07 14:56 ` Darren Hart
2006-04-07 21:06 ` Bill Huey
2006-04-07 22:37 ` Darren Hart
2006-04-07 23:36 ` Bill Huey
2006-04-08 3:01 ` Steven Rostedt
2006-04-08 4:28 ` Vernon Mauery
2006-04-08 4:45 ` Steven Rostedt
2006-04-08 7:16 ` Ingo Molnar
2006-04-08 7:25 ` Ingo Molnar
2006-04-08 7:54 ` Bill Huey
2006-04-08 8:03 ` Ingo Molnar
2006-04-08 10:02 ` Bill Huey
2006-04-08 0:11 ` Peter Williams
2006-04-07 9:23 ` Bill Huey
2006-04-09 13:16 ` Ingo Molnar
2006-04-09 17:25 ` Darren Hart
2006-04-09 18:31 ` Ingo Molnar
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=20060407105141.GA9972@elte.hu \
--to=mingo@elte.hu \
--cc=billh@gnuppy.monkey.org \
--cc=darren@dvhart.com \
--cc=johnstul@us.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=nickpiggin@yahoo.com.au \
--cc=pwil3058@bigpond.net.au \
--cc=suresh.b.siddha@intel.com \
--cc=tglx@linutronix.de \
/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).