From mboxrd@z Thu Jan  1 00:00:00 1970
From: Steven Rostedt <rostedt@goodmis.org>
Subject: Re: preempt rt in commercial use
Date: Thu, 16 Sep 2010 15:38:32 -0400
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Cc: Nivedita Singhvi <niv@us.ibm.com>, David Kastrup <dak@gnu.org>,
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To: Armin Steinhoff <armin@steinhoff.de>
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On Thu, 2010-09-16 at 21:27 +0200, Armin Steinhoff wrote:
> Hi Steven,
> 
> I don't know what a "long" deadline is ... is is something like this:
> http://harolds-planet.blogspot.com/2006/02/how-to-deal-with-deadlines.html

cute.

> 
> Cheers
> 
> --Armin
> 
> PS: I think you mean a time range where results are treated as delivered 
> timely ?

Yes, I think people understood what I meant. By "long deadline" I meant
the time needed for an event to happen or critical section to finish is
so large that it should be easy for the event to occur or a critical
section to finish within that time range.

In a rate monotonic scenario, I usually consider 3 time ranges. Period,
deadline and runtime. Where, period >= deadline >= runtime. Usually
runtime is deadline - (enough for some delta). Thus, when I say
deadline, that is just a shorter version of "time it takes where a
deadline must be reached".


-- Steve