Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 18 Oct 2001 15:45:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 18 Oct 2001 15:45:21 -0400 Received: from prgy-npn1.prodigy.com ([207.115.54.37]:5127 "EHLO deathstar.prodigy.com") by vger.kernel.org with ESMTP id ; Thu, 18 Oct 2001 15:45:09 -0400 Date: Thu, 18 Oct 2001 15:45:42 -0400 From: Bill Davidsen Message-Id: <200110181945.f9IJjg106861@deathstar.prodigy.com> To: linux-kernel@vger.kernel.org Subject: Re: VM test on 2.4.13-pre3aa1 (compared to 2.4.12-aa1 and 2.4.13-pre2aa1) X-Newsgroups: linux.dev.kernel In-Reply-To: <20011017004839.A15996@earthlink.net> Organization: Prodigy http://www.prodigy.com/ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org In article <20011017004839.A15996@earthlink.net> rwhron@earthlink.net wrote: >On Wed, Oct 17, 2001 at 04:31:03AM +0200, Andrea Arcangeli wrote: >> I noticed that anotehr thing that changed between vanilla 2.4.13pre2 and >> 2.4.13pre3 is the setting of page_cluster on machine with lots of ram. >> >> You'll now find the page_cluster set to 6, that means "1 << 6 << 12" >> bytes will be paged in at each major fault, while previously only "1 << >> 4 << 12" bytes were paged in. >> >> So I'd suggest to try again after "echo 4 > /proc/sys/vm/page-cluster" >> to see if it makes any difference. >> >> Andrea > >You Rule! > >The tweak to page-cluster is basically magic for this test. Out of curiousity, did you play with the 'preempt' patch at all? -- bill davidsen His first management concern is not solving the problem, but covering his ass. If he lived in the middle ages he'd wear his codpiece backward. - 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/