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Subject: Re: [RFC][PATCH 18/22] sched: add reclaiming logic to -deadline
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From: Raistlin <raistlin@linux.it>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Luca Abeni <luca.abeni@unitn.it>, Ingo Molnar <mingo@elte.hu>,
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On Fri, 2010-11-12 at 18:51 +0100, Peter Zijlstra wrote:
> > BTW, sorry for the shameless plug, but even with the current=20
> > SCHED_DEADLINE you are not forced to dimension the runtime using the=20
> > WCET.=20
>=20
> Yes you are, it pushes the deadline back on overrun. The idea it to
> maintain the deadline despite overrunning your budget (up to a point).
>=20
BTW, although I share most of Luca's and Tommaso's viewpoints,
triggering bandwidth enforcement at runtime+something instead than just
at runtime doesn't look all that bad, and should fit nicely in what we
have now, without much twisting.

It's just another way to interpret the runtime, and it seems feasible
(or at least plan-able as future feature! :-P) to me... Actually this
was exactly what I was asking and what I wanted to know. :-)

Thanks,
Dario

--=20
<<This happens because I choose it to happen!>> (Raistlin Majere)
----------------------------------------------------------------------
Dario Faggioli, ReTiS Lab, Scuola Superiore Sant'Anna, Pisa  (Italy)

http://blog.linux.it/raistlin / raistlin@ekiga.net /
dario.faggioli@jabber.org

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