Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932285AbWCIAIM (ORCPT ); Wed, 8 Mar 2006 19:08:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932620AbWCIAIM (ORCPT ); Wed, 8 Mar 2006 19:08:12 -0500 Received: from mail08.syd.optusnet.com.au ([211.29.132.189]:45484 "EHLO mail08.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S932285AbWCIAIK (ORCPT ); Wed, 8 Mar 2006 19:08:10 -0500 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> Message-ID: X-Mailer: http://www.courier-mta.org/cone/ From: Con Kolivas To: Zan Lynx Cc: =?ISO-8859-1?B?QW5kcuk=?= Goddard Rosa , Lee Revell , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, ck@vds.kolivas.org Subject: Re: [PATCH] mm: yield during swap prefetching Date: Thu, 09 Mar 2006 11:07:50 +1100 Mime-Version: 1.0 Content-Type: multipart/signed; boundary="=_mimegpg-kolivas.org-26372-1141862870-0003"; micalg=pgp-sha1; protocol="application/pgp-signature" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2317 Lines: 66 This is a MIME GnuPG-signed message. If you see this text, it means that your E-mail or Usenet software does not support MIME signed messages. --=_mimegpg-kolivas.org-26372-1141862870-0003 Content-Type: text/plain; format=flowed; charset="US-ASCII" Content-Disposition: inline Content-Transfer-Encoding: 7bit Zan Lynx writes: > On Thu, 2006-03-09 at 10:00 +1100, Con Kolivas wrote: >> Zan Lynx writes: > [snip] >> > Games and real-time go together like they were made for each other. >> >> I guess every single well working windows game since the dawn of time is >> some sort of anomaly then. > > Yes, those Windows games are anomalies that rely on the OS scheduling > them AS IF they were real-time, but without actually claiming that > priority. > > Because these games just assume they own the whole system and aren't > explicitly telling the OS about their real-time requirements, the OS has > to guess instead and can get it wrong, especially when hardware > capabilities advance in ways that force changes to the task scheduler > (multi-core, hyper-threading). And you said it yourself, many old games > don't work well on dual-core systems. > > I think your effort to improve the guessing is a good idea, and > thanks. > > Just don't dismiss the idea that games do have real-time requirements > and if they did things correctly, games would explicitly specify those > requirements. Games worked on windows for a decade on single core without real time scheduling because that's what they were written for. Now that games are written for windows with dual core they work well - again without real time scheduling. Why should a port of these games to linux require real time? Cheers, Con --=_mimegpg-kolivas.org-26372-1141862870-0003 Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQBED3HWZUg7+tp6mRURAg+1AJ0fB36N1qlMehnrYtdGfyepc2yd8QCggPBB paa/Q/lzpQGBwsahcK+7omo= =9TQX -----END PGP SIGNATURE----- --=_mimegpg-kolivas.org-26372-1141862870-0003-- - 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/