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Date:      Thu, 25 Jan 2007 22:06:17 -0800
From:      Colin Percival <cperciva@freebsd.org>
To:        "M. Warner Losh" <imp@bsdimp.com>
Cc:        current@freebsd.org
Subject:   Re: Interesting speed benchmarks
Message-ID:  <45B99A59.6070902@freebsd.org>
In-Reply-To: <20070125.224642.353412237.imp@bsdimp.com>
References:  <20070125.192448.-432840241.imp@bsdimp.com> <45B9895B.9020709@freebsd.org> <20070125.224642.353412237.imp@bsdimp.com>

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M. Warner Losh wrote:
> In message: <45B9895B.9020709@freebsd.org>
>             Colin Percival <cperciva@freebsd.org> writes:
> : M. Warner Losh wrote:
> : > Firewire does around 40MB/s, while USB 2.0 maxes out at about 12MB/s.
> : 
> : I get 25MB/s from my Vantec Nexstar3
> : USB 2.0 enclosure:
> : 
> : http://www.daemonology.net/blog/2006-01-28-vantex-nexstar3.html
> 
> Still, 25MB/s is no 40MB/s...

Sure, but it means that the performance issues aren't simply a global "USB 2.0
is bad".  What does `diskinfo -c` say about your firewire and USB interfaces?

Colin Percival




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