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Subject: Re: make world time???/
In-Reply-To: <28686.879744433@jkh.cdrom.com> from "Jordan K. Hubbard" at "Nov 16, 97 09:27:13 pm"
To: jkh@time.cdrom.com (Jordan K. Hubbard)
Date: Mon, 17 Nov 1997 08:32:10 +0100 (MET)
Cc: hasty@rah.star-gate.com, toor@dyson.iquest.net, sprice@hiwaay.net,
        smp@csn.net, current@FreeBSD.ORG
From: Søren Schmidt <sos@FreeBSD.dk>
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In reply to Jordan K. Hubbard who wrote:
> 
> I've definitely noticed, with my dual P6/233 (and yes Virginia,
> it is possible to overclock a P6/180 to a P6/233 if you have
> good fans and some luck :), that things are primarily *I/O*
> bound, not CPU bound, with my single IBM DCAS 4.3 GB drive
> (these are 5400 RPM and not quite speed demons).  On a
> machine with /usr/src and /usr/obj mounted on a 5 drive
> (Quantum 2GB) CCD array, I can shave as much as 40 minutes
> off the world build just on a uniprocessor P6/200, which
> is definitely food for thought.

Same observation here, I just went dual on my P6 system, and
it hardly got any better in a make world. I notice that it spends
ALOT of its time in system, so our megalock might be the culprit...


-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Søren Schmidt               (sos@FreeBSD.org)               FreeBSD Core Team
                Even more code to hack -- will it ever end
..