From: Lee Revell <rlrevell@joe-job.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Andrea Arcangeli <andrea@suse.de>,
Esben Nielsen <simlo@phys.au.dk>,
linux-kernel@vger.kernel.org, akpm@osdl.org, hch@infradead.org,
dwalker@mvista.com, Ingo Molnar <mingo@elte.hu>,
Sven-Thorsten Dietrich <sdietrich@mvista.com>,
Andi Kleen <ak@muc.de>, "Bill Huey (hui)" <bhuey@lnxw.com>,
Nick Piggin <nickpiggin@yahoo.com.au>,
James Bruce <bruce@andrew.cmu.edu>
Subject: Re: RT patch acceptance
Date: Tue, 31 May 2005 17:47:47 -0400 [thread overview]
Message-ID: <1117576067.23573.16.camel@mindpipe> (raw)
In-Reply-To: <1117574551.5511.19.camel@localhost.localdomain>
On Tue, 2005-05-31 at 17:22 -0400, Steven Rostedt wrote:
> I wouldn't call RTAI, RTLinux or a nano-kernel (embedded with Linux)
> "Diamond" hard. Maybe "Ruby" hard, but not diamond. Remember, I use to
> test code that was running airplane engines, and none of those mentioned
> would qualify to run that.
I think trying to make these types of distinctions is a waste of time.
What matters is the MTBF of the software relative to the hardware on a
given system. It would be stupid to use a commercial RTOS for a cell
phone because they fall apart in a year anyway and users don't seem to
care. Ditto anything running on PC hardware. For an airplane the MTBF
obviously must be more in line with that hardware which hopefully is way
more reliable.
Only the engineer who designs the system knows for sure, so if the RT
app people say PREEMPT_RT is good enough for a *very* large set of the
applications that they currently need a commercial RTOS for, they should
be given the benefit of the doubt. To say otherwise is to assert that
you know their hardware (be it desktop PC, digital audio workstation, or
airplane) better than they do.
Lee
next prev parent reply other threads:[~2005-05-31 21:52 UTC|newest]
Thread overview: 345+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-23 23:14 RT patch acceptance Daniel Walker
2005-05-24 2:01 ` john cooper
2005-05-24 5:47 ` Christoph Hellwig
2005-05-24 6:45 ` Ingo Molnar
2005-05-24 8:03 ` Nick Piggin
2005-05-24 8:15 ` Ingo Molnar
2005-05-24 8:27 ` Nick Piggin
2005-05-24 9:02 ` Ingo Molnar
2005-05-24 9:14 ` Nick Piggin
2005-05-24 10:13 ` Ingo Molnar
2005-05-24 18:05 ` Daniel Walker
2005-05-24 22:41 ` Bill Huey
2005-05-24 23:44 ` Daniel Walker
2005-05-25 0:10 ` Bill Huey
2005-05-25 0:32 ` K.R. Foley
2005-05-25 0:45 ` Lee Revell
2005-05-25 1:32 ` K.R. Foley
2005-05-25 0:45 ` Daniel Walker
2005-05-25 0:59 ` Bill Huey
2005-05-25 1:02 ` Daniel Walker
2005-05-25 1:43 ` Andrew Morton
2005-05-25 2:02 ` Sven Dietrich
2005-05-25 2:20 ` Andrew Morton
2005-05-25 2:26 ` Lee Revell
2005-05-25 3:24 ` Nick Piggin
2005-05-25 3:36 ` Sven Dietrich
2005-05-25 5:05 ` Nick Piggin
2005-05-25 6:09 ` RT patch acceptance (scheduler) Bill Huey
2005-05-25 7:00 ` Nick Piggin
2005-05-25 9:27 ` Bill Huey
2005-05-25 14:50 ` Nick Piggin
2005-05-25 15:12 ` RT patch acceptance (scheduler) --- QUESTION Brian O'Mahoney
2005-05-25 15:36 ` Steven Rostedt
2005-05-25 6:05 ` RT patch acceptance Ingo Molnar
2005-05-25 18:50 ` Lee Revell
2005-05-25 3:26 ` Gene Heskett
2005-05-25 5:17 ` Nick Piggin
2005-05-25 13:20 ` Gene Heskett
2005-05-25 6:33 ` Ingo Molnar
2005-05-25 7:18 ` Nick Piggin
2005-05-25 7:46 ` Ingo Molnar
2005-05-25 10:51 ` Con Kolivas
2005-05-25 8:29 ` Giuseppe Bilotta
2005-05-25 13:23 ` Gene Heskett
2005-05-25 17:17 ` Andi Kleen
2005-05-25 17:52 ` Steven Rostedt
2005-05-25 18:00 ` Sven-Thorsten Dietrich
2005-05-26 19:32 ` Andi Kleen
2005-05-26 20:11 ` Sven-Thorsten Dietrich
2005-05-26 20:27 ` Andi Kleen
2005-05-26 20:46 ` Sven-Thorsten Dietrich
2005-05-26 23:57 ` john cooper
2005-05-26 21:28 ` Bill Huey
2005-05-26 23:44 ` john cooper
2005-05-27 5:19 ` Nick Piggin
2005-05-27 5:24 ` Nick Piggin
2005-05-27 7:18 ` Ingo Molnar
2005-05-27 8:07 ` Nick Piggin
2005-05-27 15:56 ` K.R. Foley
2005-05-28 3:59 ` Lee Revell
2005-05-27 7:20 ` Sven-Thorsten Dietrich
2005-05-27 8:17 ` Nick Piggin
2005-05-27 10:17 ` Thomas Gleixner
2005-05-27 17:46 ` Karim Yaghmour
2005-05-27 12:08 ` Bill Huey
2005-05-27 12:10 ` Ingo Molnar
2005-05-27 20:36 ` Bill Huey
2005-05-27 12:43 ` Nick Piggin
2005-05-27 23:36 ` Bill Huey
2005-05-28 3:53 ` Nick Piggin
2005-05-28 4:27 ` Lee Revell
2005-05-28 4:43 ` Nick Piggin
2005-05-28 5:53 ` Bill Huey
2005-05-28 5:45 ` Bill Huey
2005-05-28 6:49 ` Nick Piggin
2005-05-29 11:37 ` James Bruce
2005-05-29 12:23 ` Brian O'Mahoney
2005-05-30 9:37 ` Nick Piggin
2005-05-30 13:43 ` James Bruce
2005-05-30 14:21 ` Nick Piggin
2005-05-30 22:27 ` Bill Huey
2005-05-30 22:54 ` Karim Yaghmour
2005-05-30 23:05 ` Bill Huey
2005-05-30 23:29 ` Karim Yaghmour
2005-05-31 1:21 ` Nick Piggin
2005-05-31 2:09 ` Bill Huey
2005-05-31 9:12 ` James Bruce
2005-05-31 9:33 ` Nick Piggin
2005-05-31 10:23 ` Bill Huey
2005-05-31 10:48 ` James Bruce
2005-05-31 11:06 ` Nick Piggin
2005-05-31 11:14 ` Andi Kleen
2005-05-31 11:31 ` Hari N
2005-05-31 16:59 ` James Bruce
2005-05-31 12:09 ` Esben Nielsen
2005-05-31 16:18 ` Steven Rostedt
2005-05-31 16:42 ` Esben Nielsen
2005-05-31 17:11 ` Andrea Arcangeli
2005-05-31 17:42 ` Steven Rostedt
2005-05-31 17:51 ` Andrea Arcangeli
2005-05-31 18:29 ` Steven Rostedt
2005-05-31 20:54 ` Andrea Arcangeli
2005-05-31 21:22 ` Steven Rostedt
2005-05-31 21:47 ` Lee Revell [this message]
2005-05-31 22:24 ` Andrea Arcangeli
2005-05-31 23:41 ` Steven Rostedt
2005-06-01 0:50 ` Zan Lynx
2005-06-01 2:38 ` Zwane Mwaikambo
2005-05-31 22:15 ` Andrea Arcangeli
2005-05-31 22:33 ` NZG
2005-05-31 23:14 ` Bill Huey
2005-05-31 21:33 ` Bill Huey
2005-05-31 23:59 ` Steven Rostedt
2005-06-01 0:57 ` Brian O'Mahoney
2005-06-01 6:23 ` John Alvord
2005-06-01 11:41 ` Steven Rostedt
2005-06-01 0:26 ` Peter Chubb
2005-06-01 8:17 ` Esben Nielsen
2005-05-31 14:30 ` Andrea Arcangeli
2005-05-31 15:07 ` Esben Nielsen
2005-05-31 16:11 ` Andrea Arcangeli
2005-05-31 18:36 ` Paul E. McKenney
2005-05-31 20:45 ` Andrea Arcangeli
2005-06-01 1:14 ` Karim Yaghmour
2005-06-01 1:30 ` Steven Rostedt
2005-06-01 1:50 ` Karim Yaghmour
2005-06-01 2:42 ` Paul E. McKenney
2005-06-01 12:18 ` Paulo Marques
2005-06-01 13:51 ` Andrea Arcangeli
2005-06-01 14:19 ` Ingo Molnar
2005-06-01 14:32 ` Andrea Arcangeli
2005-06-01 14:39 ` Daniel Walker
2005-06-01 14:45 ` Ingo Molnar
2005-06-01 14:57 ` Andrea Arcangeli
2005-06-01 14:45 ` Esben Nielsen
2005-06-01 15:05 ` Andrea Arcangeli
2005-06-01 15:15 ` Esben Nielsen
2005-06-01 15:32 ` Andrea Arcangeli
2005-06-01 17:30 ` pi_test predicted results Daniel Walker
2005-06-01 17:58 ` Esben Nielsen
2005-06-01 15:33 ` RT patch acceptance Karim Yaghmour
2005-06-01 15:38 ` Andrea Arcangeli
2005-06-01 17:53 ` Thomas Gleixner
2005-06-01 19:22 ` Andrea Arcangeli
2005-06-01 19:34 ` Esben Nielsen
2005-06-01 19:59 ` Andrea Arcangeli
2005-06-01 20:17 ` Bill Huey
2005-06-01 20:32 ` Andrea Arcangeli
2005-06-01 20:46 ` Bill Huey
2005-06-01 21:07 ` Andrea Arcangeli
2005-06-01 21:29 ` Nicolas Pitre
2005-06-01 21:39 ` Andrea Arcangeli
2005-06-01 22:29 ` Nicolas Pitre
2005-06-01 23:44 ` Zwane Mwaikambo
2005-06-01 21:42 ` Bill Huey
2005-06-01 21:59 ` Bill Huey
2005-06-01 22:32 ` Andrea Arcangeli
2005-06-01 23:02 ` Bill Huey
2005-06-01 23:19 ` Bill Huey
2005-06-02 8:50 ` Esben Nielsen
2005-06-01 23:59 ` Bill Huey
2005-06-02 0:03 ` Bill Huey
2005-06-01 19:39 ` Ingo Molnar
2005-06-01 20:44 ` Andrea Arcangeli
2005-06-01 20:56 ` Thomas Gleixner
2005-06-01 21:09 ` Andrea Arcangeli
2005-06-01 14:46 ` Andrea Arcangeli
2005-06-01 14:56 ` Chris Friesen
2005-06-01 14:58 ` Paulo Marques
2005-06-01 15:17 ` Andrea Arcangeli
2005-06-01 15:33 ` john cooper
2005-06-01 15:43 ` Andrea Arcangeli
2005-06-01 15:19 ` Karim Yaghmour
2005-06-01 14:59 ` Esben Nielsen
2005-06-01 15:47 ` NZG
2005-06-01 15:58 ` Andrea Arcangeli
2005-06-01 17:20 ` Bill Davidsen
2005-06-01 18:19 ` Esben Nielsen
2005-06-01 15:09 ` Karim Yaghmour
2005-05-31 9:14 ` Esben Nielsen
2005-05-30 23:32 ` James Bruce
2005-05-31 1:22 ` Nick Piggin
2005-05-31 2:06 ` Lee Revell
2005-05-31 2:26 ` Lee Revell
2005-05-31 7:34 ` James Bruce
2005-05-31 19:10 ` Elladan
2005-05-30 22:10 ` Bill Huey
2005-05-30 17:53 ` Karim Yaghmour
2005-05-30 19:24 ` Esben Nielsen
2005-05-30 19:44 ` Karim Yaghmour
2005-05-30 21:44 ` Rich Walker
2005-05-30 22:45 ` Bill Huey
2005-05-30 23:03 ` Karim Yaghmour
2005-05-30 23:12 ` Bill Huey
2005-05-30 23:31 ` Karim Yaghmour
2005-05-31 0:00 ` Karim Yaghmour
2005-05-30 11:25 ` Nick Piggin
2005-05-29 1:55 ` Zwane Mwaikambo
2005-05-29 2:48 ` Lee Revell
2005-05-29 2:58 ` Zwane Mwaikambo
2005-05-29 4:08 ` Valdis.Kletnieks
2005-05-29 15:00 ` Zwane Mwaikambo
2005-05-29 17:50 ` Valdis.Kletnieks
2005-05-29 19:52 ` Zwane Mwaikambo
2005-05-29 21:16 ` Valdis.Kletnieks
2005-05-30 13:01 ` Bill Huey
2005-05-31 14:30 ` Zwane Mwaikambo
2005-05-28 6:55 ` Christoph Hellwig
2005-05-28 10:22 ` Bill Huey
2005-05-28 10:24 ` Christoph Hellwig
2005-05-28 10:36 ` Bill Huey
2005-05-28 10:34 ` Bill Huey
2005-05-28 10:50 ` Bill Huey
2005-05-28 10:48 ` Christoph Hellwig
2005-05-28 11:01 ` Bill Huey
2005-05-28 11:32 ` Bill Huey
2005-05-27 9:03 ` Thomas Gleixner
2005-05-27 9:14 ` Ingo Molnar
2005-05-27 9:22 ` Thomas Gleixner
2005-06-14 0:48 ` Daniel Walker
2005-06-14 3:29 ` Valdis.Kletnieks
2005-06-14 3:38 ` Daniel Walker
2005-05-26 20:38 ` john cooper
2005-05-26 21:00 ` Sven-Thorsten Dietrich
2005-05-26 21:23 ` john cooper
2005-05-26 20:52 ` Bill Huey
2005-05-26 21:09 ` Sven-Thorsten Dietrich
2005-05-26 21:14 ` Sven-Thorsten Dietrich
[not found] ` <20050526200424.GA27162@elte.hu>
[not found] ` <20050527123529.GD86087@muc.de>
2005-05-27 12:48 ` Ingo Molnar
2005-05-27 12:56 ` Andi Kleen
2005-05-27 13:13 ` Ingo Molnar
2005-05-27 13:31 ` Andi Kleen
2005-05-27 13:44 ` Ingo Molnar
2005-05-27 13:50 ` Ingo Molnar
2005-05-27 13:53 ` Ingo Molnar
2005-05-28 19:55 ` Andi Kleen
2005-05-28 20:57 ` Lee Revell
2005-05-27 13:56 ` Takashi Iwai
2005-05-27 14:27 ` Duncan Sands
2005-05-27 16:35 ` Andrea Arcangeli
2005-05-30 9:53 ` Andi Kleen
2005-05-30 10:33 ` Ingo Molnar
2005-05-30 10:56 ` Andi Kleen
2005-05-30 12:10 ` what is the -RT tree Ingo Molnar
2005-05-30 12:40 ` Andi Kleen
2005-05-30 13:30 ` Bill Huey
2005-05-31 16:18 ` Sven-Thorsten Dietrich
2005-05-30 11:15 ` RT patch acceptance Thomas Gleixner
2005-05-27 13:34 ` Ingo Molnar
2005-05-25 3:48 ` john cooper
2005-05-25 11:35 ` Esben Nielsen
2005-05-25 13:14 ` john cooper
2005-05-25 6:09 ` Ingo Molnar
2005-05-25 1:05 ` Bill Huey
2005-05-25 2:37 ` Karim Yaghmour
2005-05-25 2:36 ` Sven Dietrich
2005-05-25 2:56 ` Karim Yaghmour
2005-05-25 3:05 ` Chris Friesen
2005-05-25 19:24 ` Tim Bird
2005-05-25 2:38 ` Lee Revell
2005-05-25 2:58 ` Karim Yaghmour
2005-05-25 2:51 ` Sven Dietrich
2005-05-25 6:15 ` Bill Huey
2005-05-25 13:25 ` Karim Yaghmour
2005-05-25 8:16 ` Ingo Molnar
2005-05-25 13:27 ` Karim Yaghmour
2005-05-25 17:32 ` Sven-Thorsten Dietrich
2005-05-25 18:16 ` Chris Friesen
2005-05-27 2:29 ` Steven Rostedt
2005-05-25 16:01 ` Jonathan Corbet
2005-05-24 11:22 ` K.R. Foley
2005-05-24 15:21 ` Nick Piggin
2005-05-24 15:41 ` K.R. Foley
2005-05-24 17:31 ` Daniel Walker
2005-05-24 15:56 ` Ingo Molnar
2005-05-24 23:21 ` Bill Huey
2005-05-24 15:44 ` Daniel Walker
2005-05-24 15:47 ` Ingo Molnar
2005-05-24 16:27 ` john cooper
2005-05-24 18:01 ` Daniel Walker
2005-05-24 9:38 ` Esben Nielsen
2005-05-24 13:29 ` Karim Yaghmour
2005-05-24 13:58 ` Esben Nielsen
2005-05-24 14:42 ` Karim Yaghmour
2005-05-24 15:23 ` Ingo Molnar
2005-05-24 16:17 ` Karim Yaghmour
2005-05-24 21:23 ` Sven Dietrich
2005-05-24 22:31 ` Karim Yaghmour
2005-05-24 22:54 ` Sven Dietrich
2005-05-24 23:41 ` Lee Revell
[not found] ` <1116979434.2912.63.camel@mindpipe>
2005-05-25 0:48 ` Karim Yaghmour
2005-05-24 23:46 ` Lee Revell
2005-05-25 3:38 ` Gene Heskett
2005-05-24 23:49 ` Bill Huey
2005-05-25 14:26 ` Philippe Gerum
2005-05-24 14:47 ` Gene Heskett
2005-05-24 17:22 ` Philippe Gerum
2005-05-25 0:21 ` Lee Revell
2005-05-25 2:04 ` Sven Dietrich
2005-05-25 20:58 ` Tom Vier
2005-05-25 21:05 ` Esben Nielsen
2005-05-25 21:10 ` NZG
2005-05-25 21:25 ` Tom Vier
2005-05-25 21:43 ` Esben Nielsen
2005-05-25 21:45 ` Bill Huey
2005-05-25 21:43 ` Bill Huey
-- strict thread matches above, loose matches on Subject: below --
2005-05-25 6:55 kus Kusche Klaus
2005-05-25 7:06 ` Nick Piggin
2005-05-25 7:58 kus Kusche Klaus
2005-06-01 17:56 ` Paul G. Allen
2005-05-25 18:10 YhLu
2005-05-25 18:51 ` Andi Kleen
2005-05-30 8:25 kus Kusche Klaus
2005-05-30 9:49 ` Nick Piggin
2005-05-30 10:16 kus Kusche Klaus
2005-05-30 10:43 ` Nick Piggin
2005-05-30 11:34 ` Esben Nielsen
2005-05-30 11:58 ` Nick Piggin
2005-05-30 18:26 ` Steven Rostedt
2005-05-30 18:37 ` Esben Nielsen
2005-05-30 18:56 ` Karim Yaghmour
2005-05-30 18:58 ` Karim Yaghmour
2005-05-30 19:33 ` Esben Nielsen
2005-05-30 19:46 ` Karim Yaghmour
2005-05-30 20:00 ` Karim Yaghmour
2005-05-31 8:53 ` Esben Nielsen
2005-05-31 22:01 ` Bill Huey
2005-06-01 0:38 ` Karim Yaghmour
2005-05-30 22:34 ` Bill Huey
2005-05-30 22:49 ` Karim Yaghmour
2005-05-30 22:49 ` Bill Huey
2005-05-30 23:15 ` Karim Yaghmour
2005-05-31 0:07 ` Thomas Gleixner
2005-05-31 16:29 ` Steven Rostedt
2005-05-31 19:52 ` Lee Revell
2005-05-31 20:16 ` Steven Rostedt
2005-05-31 21:36 ` Bill Huey
2005-05-31 19:55 ` Lee Revell
2005-05-31 20:01 ` Andi Kleen
2005-05-31 20:10 ` Lee Revell
2005-05-31 20:14 ` David Lang
2005-06-01 2:06 ` Andrea Arcangeli
2005-06-01 2:13 ` David Lang
2005-05-30 16:33 ` Zwane Mwaikambo
2005-05-31 4:39 Saksena, Manas
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