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Date:      Thu, 14 Jun 2001 09:33:27 -0500
From:      Mike Meyer <mwm@mired.org>
To:        Dave Leimbach <dleimbac@MPI-Softtech.Com>
Cc:        questions@freebsd.org
Subject:   Re: Benchmarks and reactions
Message-ID:  <15144.52023.124483.1823@guru.mired.org>
In-Reply-To: <16098900@toto.iv>

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Dave Leimbach <dleimbac@MPI-Softtech.Com> types:
> If we react calmly and try to reproduce the statistics or some related    
> benchmarking we may actually find there are bugs in our code or even a 
> place where optimization may be necessary.

Given reasonable statistics to start with, that does happen with
FreeBSD. Given apples-to-oranges comparisons, it's not likely.

> I am just curious as to why the standard generic FreeBSD distribution does
> not come with higher performance defaults.  Certainly soft-updates are a
> plus in general.  Why not use them by default?

Because they are new enough that having them on is considered less
reliable than having them off. FreeBSD's default configuration is
generally tuned for *reliability*, not speed. It may be that soft
updates aren't less reliable - that's certainly been my experience -
but changes that may make the default system less reliable are frowned
on. I wouldn't expect it to happen before snapshots are in -RELEASE,
but I've been wrong about such before.

	<mike
--
Mike Meyer <mwm@mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.

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