Subject: Re: USB ethernet performance
To: Wolfgang Rupprecht <wolfgang@wsrcc.com>
From: Laine Stump <lainestump@rcn.com>
List: current-users
Date: 03/17/2000 17:35:00
At 02:18 PM 3/17/00 -0800, Wolfgang Rupprecht wrote:
>
>lainestump@rcn.com (Laine Stump) writes:
>> When I run ttcp for 32Mbytes, between the USB ethernet and the other
>> machine (which has a tlp card), I only get 415 KBytes/sec receive,
>> or 460Kbytes/sec send.
>
>It this perhaps a 4Mbit/sec USB card?
>
>        (* 460e3 8) 3.68e6
>
>It looks suspiciously like 4Mbit/sec...

Dunno. Here's the relevant dmesg (it's the USB controller on a standard BX
chipset motherboard). The manual for the card say "peak perforamcne of 8
Mbps with sustained performance of 6Mbps".

uhci0 at pci0 dev 7 function 2: Intel 82371AB USB Host Controller (PIIX4)
(rev. 
0x01)
uhci0: interrupting at irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
aue0 at uhub0 port 2
aue0: SMC, Inc EZ USB/Ethernet Converter, rev 1.10/1.01, addr 2
aue0: Ethernet address 00:e0:29:59:f2:66
ukphy0 at aue0 phy 1: Generic IEEE 802.3u media interface
ukphy0: OUI 0x000895, model 0x0021, rev. 11
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto