Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932787Ab0KLTID (ORCPT ); Fri, 12 Nov 2010 14:08:03 -0500 Received: from ms01.sssup.it ([193.205.80.99]:60663 "EHLO sssup.it" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932261Ab0KLTIB (ORCPT ); Fri, 12 Nov 2010 14:08:01 -0500 Subject: Re: [RFC][PATCH 18/22] sched: add reclaiming logic to -deadline tasks From: Raistlin To: Tommaso Cucinotta Cc: Luca Abeni , Peter Zijlstra , Ingo Molnar , Thomas Gleixner , Steven Rostedt , Chris Friesen , oleg@redhat.com, Frederic Weisbecker , Darren Hart , Johan Eker , "p.faure" , linux-kernel , Claudio Scordino , michael trimarchi , Fabio Checconi , Tommaso Cucinotta , Juri Lelli , Nicola Manica , Dhaval Giani , Harald Gustafsson , paulmck In-Reply-To: <4CDD8279.1020803@sssup.it> References: <1288333128.8661.137.camel@Palantir> <1288334546.8661.161.camel@Palantir> <1289513573.2084.199.camel@laptop> <1289576177.6525.509.camel@Palantir> <1289577841.2084.302.camel@laptop> <4CDD7C65.9090400@unitn.it> <4CDD8279.1020803@sssup.it> Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-1DNn6lh8IKbWsyml7Cco" Date: Fri, 12 Nov 2010 20:07:46 +0100 Message-ID: <1289588866.6525.709.camel@Palantir> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1610 Lines: 51 --=-1DNn6lh8IKbWsyml7Cco Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2010-11-12 at 19:07 +0100, Tommaso Cucinotta wrote: > Let me underline a few key points, also about the technique suggested by=20 > Zijlstra: > > [...] > > I can see 2 major drawbacks: > a) you need to compute the "\psi" in order to use the "Corollary 10"=20 > of that paper, but that quantity needs to solve a LP optimization=20 > problem (see also the example in Section 6); the \psi can be used in Eq.=20 > (36) in order to compute the *expected tardiness*; > > [...] > Wow man! You really know what "give us details" means, don't you? :-PP Thanks and regards, Dario --=20 <> (Raistlin Majere) ---------------------------------------------------------------------- Dario Faggioli, ReTiS Lab, Scuola Superiore Sant'Anna, Pisa (Italy) http://blog.linux.it/raistlin / raistlin@ekiga.net / dario.faggioli@jabber.org --=-1DNn6lh8IKbWsyml7Cco Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEABECAAYFAkzdkIIACgkQk4XaBE3IOsQ5rACfYzhfhYexfpGi1DKUmbWN8Zpe ZYIAmwbNWb3hHXojo3w6YNdLkDa8xrJv =D6gV -----END PGP SIGNATURE----- --=-1DNn6lh8IKbWsyml7Cco-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/