From owner-freebsd-performance@FreeBSD.ORG Tue Oct 26 14:34:12 2010 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EF22E106566C for ; Tue, 26 Oct 2010 14:34:12 +0000 (UTC) (envelope-from mike@sentex.net) Received: from smarthost2.sentex.ca (smarthost2-6.sentex.ca [IPv6:2607:f3e0:80:80::2]) by mx1.freebsd.org (Postfix) with ESMTP id 784E88FC13 for ; Tue, 26 Oct 2010 14:34:12 +0000 (UTC) Received: from lava.sentex.ca (pyroxene.sentex.ca [199.212.134.18]) by smarthost2.sentex.ca (8.14.4/8.14.4) with ESMTP id o9QEY4Tf066332 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 26 Oct 2010 10:34:04 -0400 (EDT) (envelope-from mike@sentex.net) Received: from mdt-xp.sentex.net (simeon.sentex.ca [192.168.43.27]) by lava.sentex.ca (8.14.4/8.14.4) with ESMTP id o9QEY32Q037618; Tue, 26 Oct 2010 10:34:03 -0400 (EDT) (envelope-from mike@sentex.net) Message-Id: <201010261434.o9QEY32Q037618@lava.sentex.ca> X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9 Date: Tue, 26 Oct 2010 10:34:08 -0400 To: David Wolfskill , freebsd-performance@freebsd.org From: Mike Tancsa In-Reply-To: <20101026112916.GB2262@albert.catwhisker.org> References: <20101020174854.GZ21226@albert.catwhisker.org> <4CBF8032.8000609@freebsd.org> <20101025165548.GE1519@albert.catwhisker.org> <4CC662A1.9030708@freebsd.org> <20101026112916.GB2262@albert.catwhisker.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Scanned-By: MIMEDefang 2.67 on 205.211.164.50 Cc: Subject: Re: Possible evidence of performance regression for 8.1-S (vs. 7.1) X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Oct 2010 14:34:13 -0000 At 07:29 AM 10/26/2010, David Wolfskill wrote: >OK -- but we were using the default scheduler in each case. The basic >point I'm making here is the apparent performance regression for >similarly-configured systems under 7.1 vs. 8.1. ULE is the default in 7 as well. Perhaps remove some of the kernel options not in 7, that are in 8 by default? What is the disk subsystem ? just ata ? They seem innocuous enough, but worth a try options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4) options MAC # TrustedBSD MAC Framework options FLOWTABLE # per-cpu routing cache ---Mike -------------------------------------------------------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet since 1994 www.sentex.net Cambridge, Ontario Canada www.sentex.net/mike