Re: Interesting speed benchmarks

On 1/26/07, Stefan Ehmann <shoesoft@xxxxxxx> wrote:
On Friday 26 January 2007 03:24, 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.
> This is with a simple dd command:

On my i386 notebook with USB 2.0 enclosure.
Linux: 31.5MB/s
FreeBSD: 27.5MB/s

There's still room for improvement but numbers don't seem that bad.

Maybe you should try knoppix or so to verify it's not the drive's fault. Other
than that I'd also guess it's an amd64 problem.

IIRC I got around 50Mb/s with most USB2.0 enclosures (and
drives capable of sustaining the speed) under Windows.
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  • Re: Interesting speed benchmarks
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