From: Bill Huey (hui) <bhuey@lnxw.com>
To: "Saksena, Manas" <Manas.Saksena@timesys.com>
Cc: karim@opersys.com, dwalker@mvista.com, paulmck@us.ibm.com,
Andrea Arcangeli <andrea@suse.de>, Bill Huey <bhuey@lnxw.com>,
Lee Revell <rlrevell@joe-job.com>,
Tim Bird <tim.bird@am.sony.com>,
linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@elte.hu,
pmarques@grupopie.com, bruce@andrew.cmu.edu,
nickpiggin@yahoo.com.au, ak@muc.de, sdietrich@mvista.com,
hch@infradead.org, akpm@osdl.org
Subject: Re: Attempted summary of "RT patch acceptance" thread
Date: Mon, 13 Jun 2005 15:43:30 -0700 [thread overview]
Message-ID: <20050613224330.GA1113@nietzsche.lynx.com> (raw)
In-Reply-To: <3D848382FB72E249812901444C6BDB1D01588198@exchange.timesys.com>
On Mon, Jun 13, 2005 at 06:20:10PM -0400, Saksena, Manas wrote:
> Keep in mind that Linux has been making inroads into traditional
> RTOS markets for 4+ years. RTOSes have been used in many devices
> and systems -- many of which do not need the "ruby/diamond" hard
> variety of real-time -- preempt-rt would be hard-enough for a
> very large number of devices/systems that currently use an RTOS
> (or non mainline Linux kernel).
It's better to use different terminology. The notion of real time
is *not* a single dimensional vector that is either "more" or "less"
than of any particular thing. It's much more complicated than that.
There's at least more than one definition of hard real time floating
around with various degrees of determinism. Deterministic is
deterministic and many RTOS are capable of that. Theoretically provable
anything is pushing it and is not RTOSes are typically constructed.
I recommend dropping that ridiculous terminology because how complex
this problem/domain is as well as how misleading it can be.
bill
next prev parent reply other threads:[~2005-06-13 22:47 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-13 22:20 Saksena, Manas
2005-06-13 22:42 ` Karim Yaghmour
2005-06-13 22:44 ` Karim Yaghmour
2005-06-13 22:43 ` Bill Huey [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-06-13 22:43 Saksena, Manas
2005-06-08 15:54 Eric Piel
2005-06-09 2:20 ` Paul E. McKenney
2005-06-10 21:58 ` Eric Piel
2005-06-11 1:55 ` Paul E. McKenney
2005-06-08 2:26 Paul E. McKenney
2005-06-08 3:00 ` Karim Yaghmour
2005-06-08 14:47 ` Paul E. McKenney
2005-06-08 16:51 ` Karim Yaghmour
2005-06-09 2:25 ` Paul E. McKenney
2005-06-09 11:20 ` Philippe Gerum
2005-06-08 18:46 ` Chris Friesen
2005-06-08 19:28 ` Paul E. McKenney
2005-06-10 22:25 ` Eric Piel
2005-06-10 23:04 ` Paul E. McKenney
2005-06-10 23:23 ` Eric Piel
2005-06-11 0:59 ` Paul E. McKenney
2005-06-11 1:38 ` Eric Piel
2005-06-11 1:47 ` Paul E. McKenney
2005-06-09 23:34 ` Tim Bird
2005-06-09 23:50 ` Paul E. McKenney
2005-06-10 2:59 ` Lee Revell
2005-06-10 15:47 ` Paul E. McKenney
2005-06-10 17:37 ` Andrea Arcangeli
2005-06-10 19:39 ` Bill Huey
2005-06-10 19:41 ` Lee Revell
2005-06-10 20:26 ` Karim Yaghmour
2005-06-10 22:37 ` Bill Huey
2005-06-10 22:43 ` Bill Huey
2005-06-10 22:52 ` Andrea Arcangeli
2005-06-10 23:08 ` Bill Huey
2005-06-10 23:29 ` Andrea Arcangeli
2005-06-11 1:41 ` Paul E. McKenney
2005-06-11 1:50 ` Karim Yaghmour
2005-06-11 2:06 ` Paul E. McKenney
2005-06-11 15:54 ` Andrea Arcangeli
2005-06-11 21:04 ` Paul E. McKenney
2005-06-11 23:48 ` Karim Yaghmour
2005-06-12 17:06 ` Andrea Arcangeli
2005-06-12 21:45 ` Paul E. McKenney
2005-06-13 1:35 ` Karim Yaghmour
2005-06-13 14:40 ` Paul E. McKenney
2005-06-13 19:49 ` Karim Yaghmour
2005-06-13 20:03 ` Daniel Walker
2005-06-13 20:21 ` Paul E. McKenney
2005-06-13 20:26 ` Karim Yaghmour
2005-06-13 20:23 ` Lee Revell
2005-06-13 20:28 ` Daniel Walker
2005-06-13 22:00 ` Karim Yaghmour
2005-06-13 22:11 ` Karim Yaghmour
2005-06-13 22:18 ` Bill Huey
2005-06-13 22:28 ` Karim Yaghmour
2005-06-13 22:29 ` Bill Huey
2005-06-13 22:55 ` Karim Yaghmour
2005-06-14 1:13 ` Nicolas Pitre
2005-06-14 2:07 ` Karim Yaghmour
2005-06-14 2:35 ` Nicolas Pitre
2005-06-14 2:37 ` Nicolas Pitre
2005-06-14 3:24 ` Karim Yaghmour
2005-06-14 16:41 ` Gerrit Huizenga
2005-06-14 19:20 ` Bill Huey
2005-06-14 19:35 ` Valdis.Kletnieks
2005-06-14 21:29 ` Gene Heskett
2005-06-14 20:19 ` Gerrit Huizenga
2005-06-14 7:00 ` Eugeny S. Mints
2005-06-14 16:09 ` Gerrit Huizenga
2005-06-14 16:47 ` Andrea Arcangeli
2005-06-13 20:38 ` Bill Huey
2005-06-13 20:10 ` Paul E. McKenney
2005-06-13 20:31 ` Bill Huey
2005-06-13 20:58 ` Paul E. McKenney
2005-06-13 20:34 ` Karim Yaghmour
2005-06-13 21:02 ` Paul E. McKenney
2005-06-12 17:01 ` Andrea Arcangeli
2005-06-12 18:43 ` Lee Revell
2005-06-12 19:12 ` Bill Huey
2005-06-11 5:23 ` Ingo Molnar
2005-06-11 17:24 ` Andrea Arcangeli
2005-06-10 20:22 ` Daniel Walker
2005-06-10 20:45 ` Lee Revell
2005-06-10 21:06 ` Andrea Arcangeli
2005-06-10 22:19 ` Bill Huey
2005-06-10 22:37 ` Andrea Arcangeli
2005-06-10 22:49 ` Daniel Walker
2005-06-10 23:01 ` Bill Huey
2005-06-10 23:05 ` Andrea Arcangeli
2005-06-10 23:15 ` Bill Huey
2005-06-10 23:16 ` Paul E. McKenney
2005-06-10 23:26 ` Bill Huey
2005-06-10 23:36 ` Zwane Mwaikambo
2005-06-10 23:41 ` Bill Huey
2005-06-10 23:46 ` Lee Revell
2005-06-11 1:07 ` Paul E. McKenney
2005-06-11 15:16 ` Andrea Arcangeli
2005-06-11 20:32 ` Paul E. McKenney
2005-06-11 0:48 ` Paul E. McKenney
2005-06-10 20:38 ` Lee Revell
2005-06-10 23:12 ` Paul E. McKenney
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