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From: Ingo Molnar <mingo@kernel.org>
To: Henrik Austad <henrik@austad.us>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Luca Abeni <luca.abeni@unitn.it>, Luca Abeni <lucabe72@gmail.com>,
	juri.lelli@gmail.com, raistlin@linux.it,
	linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org
Subject: Re: [RFC 4/4] Documentation/scheduler/sched-deadline.txt: add some references
Date: Thu, 9 Apr 2015 13:55:13 +0200	[thread overview]
Message-ID: <20150409115513.GB12448@gmail.com> (raw)
In-Reply-To: <20150409101349.GD10954@sisyphus.home.austad.us>


* Henrik Austad <henrik@austad.us> wrote:

> On Thu, Apr 09, 2015 at 12:11:25PM +0200, Peter Zijlstra wrote:
> > On Thu, Apr 09, 2015 at 12:08:36PM +0200, Luca Abeni wrote:
> > > On 04/09/2015 11:44 AM, Peter Zijlstra wrote:
> > > >On Thu, Apr 09, 2015 at 11:39:08AM +0200, Henrik Austad wrote:
> > > >>>+ CPUs, with the first M - 1 tasks having a small worst case execution time
> > > >>>+ WCET_i=e and period equal to relative deadline P_i=D_i=P-1. The last task
> > > >>
> > > >>Normally, 'e' is used to denote an _arbitrarily_ small value, and I suspect
> > > >>that this is indeed the case here as well (you're going to describe
> > > >>Dhall's effect, right?). Perhaps make that point explicit?
> > > >>
> > > >>      T_i = {P_i, e, P_i}
> > > >
> > > >We're talking about \epsilon here, right?
> > > Right. I used "e" to make the thing more readable in a simple text document.
> > > 
> > > >Is it customary to use a regular 'e' in CS literature for that?
> > > I do not know... I just wanted to use one single character, and to avoid the "\"
> > > (which only makes sense to people using latex :)
> > > 
> > > But if you want I can use "epsilon" or "\epsilon"... Let me know
> > 
> > I'm fine either way, its just my math/physics brain piping up.
> 
> I'd vote for 'e' then (just to mess with peterz' brain and avoid some 
> confusing \'s).

Just make sure you explain the nomenclature in the document!

Thanks,

	Ingo

  reply	other threads:[~2015-04-09 11:55 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-08 11:59 [RFC 0/4] SCHED_DEADLINE documentation update Luca Abeni
2015-04-08 11:59 ` [RFC 1/4] Documentation/scheduler/sched-deadline.txt: fix typos Luca Abeni
2015-04-08 11:59 ` [RFC 2/4] Documentation/scheduler/sched-deadline.txt: use consistent namings Luca Abeni
2015-04-08 11:59 ` [RFC 3/4] Documentation/scheduler/sched-deadline.txt: Some notes on EDF schedulability Luca Abeni
2015-04-09  9:06   ` Henrik Austad
2015-04-09  9:34     ` Luca Abeni
2015-04-09 10:10       ` Henrik Austad
2015-04-09 10:35         ` Luca Abeni
2015-04-08 11:59 ` [RFC 4/4] Documentation/scheduler/sched-deadline.txt: add some references Luca Abeni
2015-04-08 14:43   ` Peter Zijlstra
2015-04-09  8:24   ` Juri Lelli
2015-04-09  9:13     ` Luca Abeni
2015-04-09  9:39   ` Henrik Austad
2015-04-09  9:44     ` Peter Zijlstra
2015-04-09 10:08       ` Luca Abeni
2015-04-09 10:11         ` Peter Zijlstra
2015-04-09 10:13           ` Henrik Austad
2015-04-09 11:55             ` Ingo Molnar [this message]
2015-04-09 10:05     ` Luca Abeni
2015-04-09 10:17       ` Henrik Austad
2015-04-08 14:44 ` [RFC 0/4] SCHED_DEADLINE documentation update Peter Zijlstra
2015-04-09  9:13   ` Luca Abeni
2015-04-09  9:17     ` Peter Zijlstra
2015-04-09  9:19       ` Luca Abeni
2015-04-09  9:29         ` Peter Zijlstra

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