Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751292AbXB1QLz (ORCPT ); Wed, 28 Feb 2007 11:11:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751360AbXB1QLz (ORCPT ); Wed, 28 Feb 2007 11:11:55 -0500 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:1399 "EHLO spitz.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751292AbXB1QLy (ORCPT ); Wed, 28 Feb 2007 11:11:54 -0500 Date: Tue, 27 Feb 2007 17:13:44 +0000 From: Pavel Machek To: Ingo Molnar Cc: Evgeniy Polyakov , Ulrich Drepper , linux-kernel@vger.kernel.org, Linus Torvalds , Arjan van de Ven , Christoph Hellwig , Andrew Morton , Alan Cox , Zach Brown , "David S. Miller" , Suparna Bhattacharya , Davide Libenzi , Jens Axboe , Thomas Gleixner Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3 Message-ID: <20070227171343.GA3956@ucw.cz> References: <20070223122224.GB5392@2ka.mipt.ru> <20070225174505.GA7048@elte.hu> <20070225180910.GA29821@2ka.mipt.ru> <20070225190414.GB6460@elte.hu> <20070225194250.GA1353@2ka.mipt.ru> <20070226123922.GA1370@elte.hu> <20070226140500.GA31629@2ka.mipt.ru> <20070226141518.GA24683@elte.hu> <20070226165513.GB22454@2ka.mipt.ru> <20070226203543.GB23357@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070226203543.GB23357@elte.hu> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 955 Lines: 23 Hi! > > If kernelspace rescheduling is that fast, then please explain me why > > userspace one always beats kernel/userspace? > > because 'user space scheduling' makes no sense? I explained my thinking > about that in a past mail: ... > 2) there has been an IO event. The thing is, for IO events we enter the > kernel no matter what - and we'll do so for the next 10 years at ..actually, at some point 3D acceleration was done by accessing hw directly from userspace. OTOH I think we are moving away from that model, so it is probably irrelevant here. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - 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/