Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 14 Jan 2002 06:43:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 14 Jan 2002 06:43:03 -0500 Received: from penguin.e-mind.com ([195.223.140.120]:17432 "EHLO penguin.e-mind.com") by vger.kernel.org with ESMTP id ; Mon, 14 Jan 2002 06:41:53 -0500 Date: Mon, 14 Jan 2002 12:41:56 +0100 From: Andrea Arcangeli To: Alan Cox Cc: Robert Love , jogi@planetzork.ping.de, Andrew Morton , Ed Sweetman , yodaiken@fsmlabs.com, nigel@nrg.org, Rob Landley , linux-kernel@vger.kernel.org Subject: Re: [2.4.17/18pre] VM and swap - it's really unusable Message-ID: <20020114124156.D10227@athlon.random> In-Reply-To: <1010946178.11848.14.camel@phantasy> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.12i In-Reply-To: ; from alan@lxorguk.ukuu.org.uk on Sun, Jan 13, 2002 at 07:32:18PM +0000 X-GnuPG-Key-URL: http://e-mind.com/~andrea/aa.gnupg.asc X-PGP-Key-URL: http://e-mind.com/~andrea/aa.asc Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Jan 13, 2002 at 07:32:18PM +0000, Alan Cox wrote: > > Again, preempt seems to reign supreme. Where is all the information > > correlating preempt is inferior? To be fair, however, we should bench a > > mini-ll+s test. > > How about some actual latency numbers ? with an huge rescheduling rate (huge swapout/swapin load) and the scheduler walking over 100 tasks at each schedule it is insane to deduct anything from those numbers (-preempt was using O(1) scheduler!!!!). so please don't make any assumption by just looking at those numbers. Andrea - 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/