Date: Tue, 24 Jul 2001 11:19:03 -0700 From: Kent Stewart <kstewart@urx.com> To: j mckitrick <jcm@FreeBSD-uk.eu.org> Cc: Jason Andresen <jandrese@mitre.org>, freebsd-stable@freebsd.org Subject: Re: question about wc on for NON-critical workstation (no flamebait) Message-ID: <3B5DBC17.FE599BA2@urx.com> References: <20010724180907.A71575@dogma.freebsd-uk.eu.org> <3B5DAECF.E9FE622D@mitre.org> <3B5DB1FA.1B894F9E@urx.com> <20010724184624.B71800@dogma.freebsd-uk.eu.org>
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j mckitrick wrote: > > On Tue, Jul 24, 2001 at 10:35:54AM -0700, Kent Stewart wrote: > | My buildworld on a dual 866 coppermine system went from 42 minutes to 29 > | minutes. The other side effect was the -j8 parameter finally did > | something. Before that anything from -j2 on, actually made the > > I thought over -j2 was not recommended, and often broke? When I was timing, all I was doing was something like time make -jx buildworld I went up in even increments. When x was 2 or larger, the call clock time increased. > > | buildworld run longer. I think the cpu's were starved for I/O. The > | system is built around 3-ATA-100 Maxtor 30GB HD's. The motherboard is a > | VP6 and each HD is on its own controller. Using raid-0 also slowed the > | compile down. > > A far cry from my little laptop. ;-) That is true but it doesn't mean you won't see an improvement. You just won't see the same time. In 1988, we were benchmarking Cray X/MPs and write behind caching would come pretty close to doubling the throughput. The effect isn't new. I should also point out that the script I use logs the build. The source and each output is on a different HD. Kent > > jcm > -- > o-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-o > | ~~~~~~~~~~~~ Jonathon McKitrick ~~~~~~~~~~~~~ | > | "I prefer the term 'Artificial Person' myself." | > o-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-o > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-stable" in the body of the message -- Kent Stewart Richland, WA Cool site http://www.bmwfilms.com mailto:kbstew99@hotmail.com http://kstewart.urx.com/kstewart/index.html http://daily.daemonnews.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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