From owner-freebsd-current@FreeBSD.ORG Thu Sep 15 16:12:25 2005 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A513816A420 for ; Thu, 15 Sep 2005 16:12:25 +0000 (GMT) (envelope-from lehmann@ans-netz.de) Received: from avocado.salatschuessel.net (avocado.salatschuessel.net [83.136.81.184]) by mx1.FreeBSD.org (Postfix) with ESMTP id 65B2C43D45 for ; Thu, 15 Sep 2005 16:12:24 +0000 (GMT) (envelope-from lehmann@ans-netz.de) Received: (qmail 82006 invoked by uid 89); 15 Sep 2005 16:11:02 -0000 Received: from unknown (HELO kartoffel.salatschuessel.net) (83.136.81.185) by avocado.salatschuessel.net with SMTP; 15 Sep 2005 16:11:02 -0000 Date: Thu, 15 Sep 2005 18:12:38 +0200 From: Oliver Lehmann To: joseph.koshy@gmail.com Message-Id: <20050915181238.54b16b4b.lehmann@ans-netz.de> In-Reply-To: <20050915172005.072f4bdf.lehmann@ans-netz.de> References: <20050914194612.15692485.lehmann@ans-netz.de> <43286E37.40203@samsco.org> <20050914222013.178dc4dc.lehmann@ans-netz.de> <84dead72050914135239514c49@mail.gmail.com> <20050915000053.448f251b.lehmann@ans-netz.de> <84dead7205091500152a7c25d1@mail.gmail.com> <20050915172005.072f4bdf.lehmann@ans-netz.de> X-Mailer: Sylpheed version 2.0.1 (GTK+ 2.6.10; amd64-portbld-freebsd6.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: current@freebsd.org Subject: Re: low(er) disk performance with sched_4bsd then with sched_ule X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Sep 2005 16:12:25 -0000 Oliver Lehmann wrote: > Joseph Koshy wrote: > > > What happens if you use a kernel with 'options NO_ADAPTIVE_MUTEXES' ? > > I'll try this and respond back > Hmm, that made it more worse root@nudel olivleh1> pmcstat -S instructions -c 1 -S instructions -O /tmp/4bsd.2.out dd if=/dev/zero of=/mnt/files/test.dd bs=64k count=32000 32000+0 records in 32000+0 records out 2097152000 bytes transferred in 94.441797 secs (22205761 bytes/sec) root@nudel olivleh1> pmcstat -R /tmp/4bsd.2.out -g root@nudel olivleh1> gprof -l /boot/kernel/kernel ./p6-inst-retired/kernel.gmon > gprof.4bsd.2 time is in ticks, not seconds root@nudel olivleh1> http://pofo.de/tmp/gprof.4bsd.2 -- Oliver Lehmann http://www.pofo.de/ http://wishlist.ans-netz.de/