Re: [Linux-usb-users] linux 2.6.6, bttv and usb2 data corruption & lockups & poor performance

From: Duncan Sands
Date: Thu Jul 01 2004 - 09:24:03 EST


On Thursday 01 July 2004 16:06, Stephen J. Gowdy wrote:
> On Thu, 1 Jul 2004, Duncan Sands wrote:
>
> > > First of all, usb2 throughput was disappointing, i only got about
> > > 5-15MB/s (usually about 8MB/s) while the manufacturer claims sustained
> > > datarate of 35MB/s.
> >
> > Are you sure you plugged your device into a usb 2 port, and not a usb
> > 1.1 port? Also, some products claim to be usb 2 devices, when they are
> > in fact only usb 1.1.
>
> 1.1 devices would only get less than 1MB/s.

Ah, I misread it as 8 M bits / s, which is max 1.1 speed.

Bye, Duncan.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/