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From: "Gregory Haskins" <ghaskins@novell.com>
To: "Peter Zijlstra" <a.p.zijlstra@chello.nl>,
	"Dmitry Adamushko" <dmitry.adamushko@gmail.com>
Cc: "Ingo Molnar" <mingo@elte.hu>,
	"Steven Rostedt" <rostedt@goodmis.org>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [sched-devel, patch-rfc] rework of "prioritize non-migratabletasks over migratable ones"
Date: Mon, 16 Jun 2008 13:54:52 -0600	[thread overview]
Message-ID: <48568CCC.BA47.005A.0@novell.com> (raw)
In-Reply-To: <1213643862.16944.142.camel@twins>

>>> On Mon, Jun 16, 2008 at  3:17 PM, in message
<1213643862.16944.142.camel@twins>, Peter Zijlstra <a.p.zijlstra@chello.nl>
wrote: 
> On Mon, 2008-06-16 at 19:59 +0200, Dmitry Adamushko wrote:
> 
>> One way or another, we have different aritifacts (and mine have likely
>> more) but conceptually, both "violates" POSIX if a strict round-robin
>> scheduling is required.
> 
> http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_08.html#t
> ag_02_08_04_01
> 
> Is quite strict on what FIFO should do, and I know of two points where
> we deviate and should work to match.

Thanks for the link, Peter.  When you read that, its pretty clear that this whole concept violates the standard.  Its probably best to just revert the patch and be done with it.

Regards,
-Greg


  reply	other threads:[~2008-06-16 19:54 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-10 22:58 [sched-devel, patch-rfc] rework of "prioritize non-migratable tasks over migratable ones" Dmitry Adamushko
2008-06-11  8:53 ` Peter Zijlstra
2008-06-11 10:05   ` Dmitry Adamushko
2008-06-13 13:08     ` Peter Zijlstra
2008-06-16 14:26     ` Gregory Haskins
2008-06-16 17:59       ` Dmitry Adamushko
2008-06-16 18:44         ` Gregory Haskins
2008-06-16 19:17         ` Peter Zijlstra
2008-06-16 19:54           ` Gregory Haskins [this message]
2008-06-18 10:39             ` [sched-devel, patch-rfc] rework of "prioritize non-migratabletasks " Ingo Molnar
2008-06-18 10:47               ` Peter Zijlstra
2008-06-18 11:52               ` [sched-devel, patch-rfc] rework of "prioritizenon-migratabletasks " Gregory Haskins
2008-06-18 11:58               ` [sched-devel, patch-rfc] rework of "prioritize non-migratabletasks " Dmitry Adamushko
2008-07-01 10:46           ` [sched-devel, patch-rfc] rework of "prioritize non-migratable tasks " Dmitry Adamushko
2008-07-15 12:48             ` Peter Zijlstra
2008-06-18 10:44 ` Ingo Molnar
     [not found] <48524EDA0200005A00038BA4@sinclair.provo.novell.com>
2008-06-13 14:41 ` [sched-devel, patch-rfc] rework of "prioritize non-migratabletasks " Gregory Haskins

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