From: Robert Schwebel <r.schwebel@pengutronix.de>
To: Raz <raziebe@gmail.com>
Cc: "Nikita V. Youshchenko" <yoush@cs.msu.su>,
linux-rt-users <linux-rt-users@vger.kernel.org>
Subject: Re: preempt rt in commercial use
Date: Tue, 14 Sep 2010 11:44:11 +0200 [thread overview]
Message-ID: <20100914094411.GB10841@pengutronix.de> (raw)
In-Reply-To: <AANLkTikCwVw9jsg+L_e-kHnhogSdgE+8rrO8O0gDMB5V@mail.gmail.com>
On Tue, Sep 14, 2010 at 11:24:21AM +0200, Raz wrote:
> anyone can say preempt rt is hard real time?
Hard realtime has something to do with how you define "missing the
deadline". If somebody cuts the cable of your roboter controller in the
factory hall, the system misses the deadline. So it is all about
probabilities: hard realtime systems have a very, very low probability
of missing the deadline. However, in real life systems, it is > 0%.
So yes, if you talk about real world, it is hard realtime.
> anyone knows preempt rt known bugs?
Like every software or every technical system it of course has bugs.
> why is it not mainline yet?
Large parts of the original patches are in the Linux mainline in the
mean time, and the rest is constantly being worked on, in order to bring
them into the official kernel as well.
rsc
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next prev parent reply other threads:[~2010-09-14 9:44 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-14 8:10 preempt rt in commercial use Raz
2010-09-14 9:04 ` Rolando Martins
2010-09-14 9:10 ` Raz
2010-09-14 9:20 ` Rolando Martins
2010-09-14 9:17 ` Nikita V. Youshchenko
2010-09-14 9:24 ` Raz
2010-09-14 9:44 ` Robert Schwebel [this message]
2010-09-14 12:16 ` Armin Steinhoff
2010-09-14 13:04 ` Daniel James
2010-09-14 13:08 ` Pradyumna Sampath
2010-09-14 22:11 ` Nivedita Singhvi
2010-09-14 13:09 ` Klaas van Gend
2010-09-14 13:17 ` David Kastrup
2010-09-14 13:37 ` Darcy Watkins
2010-09-14 13:58 ` Patrice Kadionik
2010-09-14 14:21 ` Jeff Angielski
2010-09-14 14:30 ` Nikita V. Youshchenko
2010-09-14 14:49 ` Jeff Angielski
2010-09-14 22:20 ` Nivedita Singhvi
2010-09-15 7:48 ` Armin Steinhoff
2010-09-15 14:09 ` Nivedita Singhvi
2010-09-15 14:45 ` Pradyumna Sampath
2010-09-16 10:17 ` Daniel James
2010-09-16 10:35 ` Pradyumna Sampath
2010-09-16 15:19 ` Raz
2010-09-15 15:38 ` David Kastrup
2010-09-15 16:02 ` Nivedita Singhvi
2010-09-15 16:20 ` David Kastrup
2010-09-16 0:44 ` Steven Rostedt
2010-09-16 15:27 ` Nivedita Singhvi
2010-09-16 17:30 ` Steven Rostedt
2010-09-16 19:27 ` Armin Steinhoff
2010-09-16 19:38 ` Steven Rostedt
2010-09-15 13:33 ` Thomas Gleixner
2010-09-14 14:44 ` Pradyumna Sampath
2010-09-15 12:48 ` Sergio Ruocco
2010-09-15 12:53 ` Pradyumna Sampath
2010-09-15 14:58 ` Paul E. McKenney
2010-09-15 16:27 ` Sven-Thorsten Dietrich
2010-09-16 0:49 ` Steven Rostedt
2010-09-16 5:06 ` David Kastrup
2010-09-14 14:56 ` Armin Steinhoff
2010-09-14 15:42 ` Patrice Kadionik
2010-09-14 17:38 ` Gregory Haskins
2010-09-14 22:09 ` Nivedita Singhvi
2010-09-15 6:22 ` Patrice Kadionik
[not found] ` <4C90CF71.2050205@us.ibm.com>
2010-09-15 13:56 ` Patrice Kadionik
2010-09-15 14:08 ` Steven Rostedt
2010-09-14 10:06 ` Klaas van Gend
2010-09-14 11:00 ` David Kastrup
2010-09-14 9:28 ` Pradyumna Sampath
2010-09-14 14:13 ` Reagan Thomas
2010-09-15 7:09 ` AW: " Lukas Redlinger
2010-09-15 3:38 ` jordan
2010-09-15 8:59 ` Klaas van Gend
2010-09-15 11:03 ` TinxCore and PREEMPT_RT Armin Steinhoff
2010-09-16 9:38 ` Armin Steinhoff
2010-09-16 10:18 ` David Kastrup
2010-09-16 11:25 ` Mike Galbraith
2010-09-16 11:51 ` Armin Steinhoff
2010-09-15 14:03 ` preempt rt in commercial use Nivedita Singhvi
2010-09-15 17:29 ` Reagan Thomas
2010-09-16 10:39 ` Daniel James
2010-09-16 20:47 ` jordan
2010-09-16 10:07 ` Daniel James
2010-09-16 20:37 ` jordan
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