Date: Thu, 25 Jan 2007 20:53:47 -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: <45B9895B.9020709@freebsd.org> In-Reply-To: <20070125.192448.-432840241.imp@bsdimp.com> References: <20070125.192448.-432840241.imp@bsdimp.com>
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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 Colin Percival
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