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Date: Fri, 26 Jan 2007 09:43:20 +0300
From: "Andrew Pantyukhin" <infofarmer@FreeBSD.org>
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To: "Colin Percival" <cperciva@freebsd.org>
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Cc: current@freebsd.org, "M. Warner Losh" <imp@bsdimp.com>
Subject: Re: Interesting speed benchmarks
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On 1/26/07, Colin Percival <cperciva@freebsd.org> wrote:
> M. Warner Losh wrote:
> > On a lark, I just got a combo USB/Firewire external disk drive.  I ran
> > some crude benchmarks, and I was surprised by what I found.  This is
> > on a fairly stock -current kernel.
> >
> > Firewire does around 40MB/s, while USB 2.0 maxes out at about 12MB/s.
>
> Either amd64 is slower than i386, there has been a performance regression
> between 6.2-RELEASE and whatever version of FreeBSD you're running, or you
> have a rather slow external drive.  I get 25MB/s from my Vantec Nexstar3
> USB 2.0 enclosure:
>
> http://www.daemonology.net/blog/2006-01-28-vantex-nexstar3.html

I've always (since 5.x I think) got 25Mb/s on i386
and half that on amd64, no matter what equipment I
try.