Date: Fri, 26 Jan 2007 09:43:20 +0300 From: "Andrew Pantyukhin" <infofarmer@FreeBSD.org> To: "Colin Percival" <cperciva@freebsd.org> Cc: current@freebsd.org, "M. Warner Losh" <imp@bsdimp.com> Subject: Re: Interesting speed benchmarks Message-ID: <cb5206420701252243l12e871dfhbc99886d884052b7@mail.gmail.com> In-Reply-To: <45B9895B.9020709@freebsd.org> References: <20070125.192448.-432840241.imp@bsdimp.com> <45B9895B.9020709@freebsd.org>
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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.
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