From owner-freebsd-performance@FreeBSD.ORG Thu Oct 21 00:00:03 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 81039106566B for ; Thu, 21 Oct 2010 00:00:03 +0000 (UTC) (envelope-from julian@freebsd.org) Received: from out-0.mx.aerioconnect.net (outk.internet-mail-service.net [216.240.47.234]) by mx1.freebsd.org (Postfix) with ESMTP id 57D968FC17 for ; Thu, 21 Oct 2010 00:00:03 +0000 (UTC) Received: from idiom.com (postfix@mx0.idiom.com [216.240.32.160]) by out-0.mx.aerioconnect.net (8.13.8/8.13.8) with ESMTP id o9KNnI8K005434 for ; Wed, 20 Oct 2010 16:49:18 -0700 X-Client-Authorized: MaGic Cook1e Received: from julian-mac.elischer.org (h-67-100-89-137.snfccasy.static.covad.net [67.100.89.137]) by idiom.com (Postfix) with ESMTP id 555D92D6019 for ; Wed, 20 Oct 2010 16:49:18 -0700 (PDT) Message-ID: <4CBF8032.8000609@freebsd.org> Date: Wed, 20 Oct 2010 16:50:10 -0700 From: Julian Elischer User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.4; en-US; rv:1.9.2.11) Gecko/20101013 Thunderbird/3.1.5 MIME-Version: 1.0 To: freebsd-performance@freebsd.org References: <20101020174854.GZ21226@albert.catwhisker.org> In-Reply-To: <20101020174854.GZ21226@albert.catwhisker.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.67 on 216.240.47.51 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: Thu, 21 Oct 2010 00:00:03 -0000 On 10/20/10 10:48 AM, David Wolfskill wrote: > [...] > The 8.x reference machine was created by cloning the 7.x reference > machine (the OS "drive" is a RAID 1; I broke the mirror and physically > booted the (soon-to-be) 8.x machine from a single drive from the > 7.x mirror, changed the hostname& IP address, then allowed the > RAID firmware on the controller to "re-silver" that mirror). Once > that finished, I performed a fairly standard source upgrade to 8.0-R > on one slice, cloned that slice, booted from the cloned slice, and > did a source upgrade to more recent points along the stable/8 branch, > culminating with the above-cited 8.1-STABLE #5 r214029. At this > point, I've left the installed ports alone, except that the 8.x > slices have the compat7x port installed. > [...] try the 7.x machine but running the 8.x kernel.. i.e. change nothing, but boot the new kernel. > FWIW, the workload is fairly CPU intensive during most of the run; the > I/O done during (most of) the test appears to be very light, and the > memory used is fairly modest. In each of the test machines, I have > turned off HTT (HyperThreading Technology); hw.ncpu reports 8 for each. try with HTT on for modern hardware.. > Thanks! > > Peace, > david