From owner-freebsd-smp Fri Sep 6 13:15: 9 2002 Delivered-To: freebsd-smp@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 65E7937B400 for ; Fri, 6 Sep 2002 13:15:07 -0700 (PDT) Received: from tp.databus.com (p70-227.acedsl.com [66.114.70.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id A238F43E6A for ; Fri, 6 Sep 2002 13:15:06 -0700 (PDT) (envelope-from barney@databus.com) Received: from databus.com (localhost.databus.com [127.0.0.1]) by tp.databus.com (8.12.6/8.12.5) with ESMTP id g86KF5Ee043906; Fri, 6 Sep 2002 16:15:05 -0400 (EDT) (envelope-from barney@databus.com) Received: (from barney@localhost) by databus.com (8.12.6/8.12.6/Submit) id g86KF5BF043905; Fri, 6 Sep 2002 16:15:05 -0400 (EDT) Date: Fri, 6 Sep 2002 16:15:05 -0400 From: Barney Wolff To: Yoriaki FUJIMORI Cc: freebsd-smp@FreeBSD.ORG Subject: Re: AHA39260 Message-ID: <20020906201505.GA43097@tp.databus.com> References: <200209061246.g86Ck7oQ001578@grafin.fujimori.cache.waseda.ac.jp> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200209061246.g86Ck7oQ001578@grafin.fujimori.cache.waseda.ac.jp> User-Agent: Mutt/1.4i Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Check that softupdates is on for /usr/src and /usr/obj and that they're actually on different disks. Also, what else is going on during the build? On Fri, Sep 06, 2002 at 09:46:07PM +0900, Yoriaki FUJIMORI wrote: > Dear Listers, > > I have been feeling annoyed by the following funny phenomenon. > I am using Iwill DP400 dual xeon boxes and 4.6.2R. > On one of them, I installed Adaptec 39260 dual u160 channel 64bit > scsi card to 64bit PCI slot, and attatch one disk to each channel. > When I invoked > `make buildworld', it takes about 50 min, > while, on other FreeBSD boxes with the same motherboard and cpus, > Adaptec 29160 64bit scsi card (to 64bitslot) and one LVD HDD, > it takes only 28 min. > > Could some kind souls explain why dual channel scsi runs slower > than single channel on 64bit slots? > > Thanks in advance. > > Yoriaki Fujimori > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-smp" in the body of the message -- Barney Wolff I'm available by contract or FT: http://www.databus.com/bwresume.pdf To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message