Date: Fri, 6 Sep 2002 16:15:05 -0400 From: Barney Wolff <barney@tp.databus.com> To: Yoriaki FUJIMORI <fujimori@grafin.fujimori.cache.waseda.ac.jp> Cc: freebsd-smp@FreeBSD.ORG Subject: Re: AHA39260 Message-ID: <20020906201505.GA43097@tp.databus.com> In-Reply-To: <200209061246.g86Ck7oQ001578@grafin.fujimori.cache.waseda.ac.jp> References: <200209061246.g86Ck7oQ001578@grafin.fujimori.cache.waseda.ac.jp>
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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
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