Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932746AbWCIDNp (ORCPT ); Wed, 8 Mar 2006 22:13:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932747AbWCIDNp (ORCPT ); Wed, 8 Mar 2006 22:13:45 -0500 Received: from threatwall.zlynx.org ([199.45.143.218]:54929 "EHLO zlynx.org") by vger.kernel.org with ESMTP id S932746AbWCIDNo (ORCPT ); Wed, 8 Mar 2006 22:13:44 -0500 Subject: Re: [PATCH] mm: yield during swap prefetching From: Zan Lynx To: Con Kolivas Cc: =?ISO-8859-1?Q?Andr=E9?= Goddard Rosa , Lee Revell , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, ck@vds.kolivas.org In-Reply-To: References: <200603081013.44678.kernel@kolivas.org> <200603081322.02306.kernel@kolivas.org> <1141784834.767.134.camel@mindpipe> <200603081330.56548.kernel@kolivas.org> <1141852064.21958.28.camel@localhost> <1141861694.21958.66.camel@localhost> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-zJ9LnmXwAF2CSBtVTkz0" Date: Wed, 08 Mar 2006 20:13:32 -0700 Message-Id: <1141874012.21958.138.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.4.2.1 X-Envelope-From: zlynx@acm.org Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1989 Lines: 58 --=-zJ9LnmXwAF2CSBtVTkz0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Thu, 2006-03-09 at 11:07 +1100, Con Kolivas wrote: > Games worked on windows for a decade on single core without real time=20 > scheduling because that's what they were written for.=20 >=20 > Now that games are written for windows with dual core they work well - > again=20 > without real time scheduling.=20 >=20 > Why should a port of these games to linux require real time? That isn't what I said. I said nothing about *requiring* anything, only about how to do it better. Here is what Con said that I was disagreeing with. All the rest was to justify my disagreement. =20 Con said, "... games should _not_ need special scheduling classes. They are not written in a real time smart way and they do not have any realtime constraints or requirements." And he said later, "No they shouldn't need real time scheduling to work well if they are coded properly." Here is a list of simple statements of what I am saying: Games do have real-time requirements. The OS guessing about real-time priorities will sometimes get it wrong. Guessing task priority is worse than being told and knowing for sure. Games should, in an ideal world, be using real-time OS scheduling. Games would work better using real-time OS scheduling. That is all from me. --=20 Zan Lynx --=-zJ9LnmXwAF2CSBtVTkz0 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.1 (GNU/Linux) iD8DBQBED51cG8fHaOLTWwgRAn4XAKCNNx6BkyM7bKMsUSHQlaZ6aYjskgCfZ/8V PhwwV6gfUdOOZR/NUa+D4ho= =sP7C -----END PGP SIGNATURE----- --=-zJ9LnmXwAF2CSBtVTkz0-- - 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/