Date: Sun, 04 Oct 1998 11:32:12 +0100 (BST) From: Duncan Barclay <dmlb@ragnet.demon.co.uk> To: Bruce Evans <bde@zeta.org.au> Cc: tlambert@primenet.com, gibbs@plutotech.com, freebsd-scsi@FreeBSD.ORG, freebsd-fs@FreeBSD.ORG, Don.Lewis@tsc.tdk.com, mike@smith.net.au Subject: Re: filesystem safety and SCSI disk write caching Message-ID: <XFMail.981004113212.dmlb@computer.my.domain> In-Reply-To: <199810040616.QAA26536@godzilla.zeta.org.au>
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On 04-Oct-98 Bruce Evans wrote:
>>> Yes, the default configuration may be much slower than mine.
>>
>>I can definitely back your basic point ('make world' is CPU bound) up.
>>On a 4-way Xeon system with slow disks we were still able to get down
>>around 40 minutes.
>
> Er, that shows that it is i/o bound on systems with so much CPU. I
> got it down to 75 minutes on 1-way K6-233 with 1 IDE disk before it
> was bloated by perl5 and transition to elf.
>
> Bruce
I would agree, my AMD K6-233 did a make -j 4 in jst over an hour with src on
IDE mounted async and obj on SCSI mounted async (this was upgrading from
2.2.6). I haven't tried it under -3.0 and softupdates yet.
Duncan
---
________________________________________________________________________
Duncan Barclay | God smiles upon the little children,
dmlb@ragnet.demon.co.uk | the alcoholics, and the permanently stoned.
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