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Date:      Sun, 29 Feb 2004 17:22:15 -0500 (EST)
From:      Andre Guibert de Bruet <andy@siliconlandmark.com>
To:        Evren Yurtesen <yurtesen@ispro.net.tr>
Cc:        current@freebsd.org
Subject:   Re: buildworld times
Message-ID:  <20040229165606.J52152@alpha.siliconlandmark.com>
In-Reply-To: <20040229193302.GA90729@luke.immure.com>
References:  <20040228144714.P8264-100000@oahu.WURLDLINK.NET> <4041B8C1.8000309@ispro.net.tr> <20040229164815.GA88163@luke.immure.com> <404226DF.3070809@ispro.net.tr> <20040229193302.GA90729@luke.immure.com>

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On Sun, 29 Feb 2004, Bob Willcox wrote:

> On Sun, Feb 29, 2004 at 07:52:31PM +0200, Evren Yurtesen wrote:
> > Sorry, my mistake...I guess it was taking longer than 15 minutes... :(
> > 41m51.44s real          24m52.18s user          14m56.58s sys
> >
> > I dont know how could I get 15 last time, if I forgot to do make clean
> > or something, or a lot of stuff was cached in the memory maybe? I think
> > I did it 2 times in a row :) I guess doing from a memory disk would
> > enhance things a lot.
>
> I've never experienced _that_ big (3-fold) of difference when running
> buildworlds back-to-back though.

Even on a somewhat idle machine with multiple gigabytes of high-bandwidth
memory, you're only going to be shaving a couple of minutes. Buildworld
times are strongly affected by the underlying storage's seek time and
write latency.

Unless you're running bonnie++ for the second benchmark, these numbers
are likely to not be from the same machine. Wanna rerun the test?

Regards,
Andy

> Andre Guibert de Bruet | Enterprise Software Consultant >
> Silicon Landmark, LLC. | http://siliconlandmark.com/    >



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