2004-10-14 00:41:45

by J.A. Magallon

Subject: eth1394 performace

Hi all...

I'm trying to link an iBook and my linux box (kernel 2.6.9-rc4-mm1) via FireWire.
With static IP addresses, it seems to work, but performance is sloow (compared
to what I expected;):

werewolf:/usr/src/linux# iperf -c ibook
------------------------------------------------------------
Client connecting to ibook, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.0.1 port 33155 connected with 192.168.0.2 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 110 MBytes 91.8 Mbits/sec
werewolf:/usr/src/linux# iperf -c ibook-fw
------------------------------------------------------------
Client connecting to ibook-fw, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.1.1 port 33156 connected with 192.168.1.2 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 90.5 MBytes 75.8 Mbits/sec

Subnet 192.168.0 is an ethernet link (e1000 -> iBook), and 192.168.1
is the firewire one.

Hardware:
03:03.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)

Modules:
eth1394 18952 0
e1000 78516 0
ohci1394 29700 0

(iee1394 is compiled-in).

Where did I lost my 400Mb/s ?

TIA

(Please, people in the 1394 lists, CC me, I'm not subscribed. Thanks.)

--
J.A. Magallon <jamagallon()able!es> \ Software is like sex:
werewolf!able!es \ It's better when it's free
Mandrakelinux release 10.1 (Community) for i586
Linux 2.6.9-rc4-mm1 (gcc 3.4.1 (Mandrakelinux 10.1 3.4.1-4mdk)) #3

2004-10-14 22:20:43

by Michael J. Cohen

Subject: Re: eth1394 performace

On Thu, 2004-10-14 at 00:41 +0000, J.A. Magallon wrote:
> Hi all...
>
> I'm trying to link an iBook and my linux box (kernel 2.6.9-rc4-mm1) via FireWire.
> With static IP addresses, it seems to work, but performance is sloow (compared
> to what I expected;):
>
> werewolf:/usr/src/linux# iperf -c ibook
> ------------------------------------------------------------
> Client connecting to ibook, TCP port 5001
> TCP window size: 16.0 KByte (default)
> ------------------------------------------------------------
> [ 3] local 192.168.0.1 port 33155 connected with 192.168.0.2 port 5001
> [ ID] Interval Transfer Bandwidth
> [ 3] 0.0-10.0 sec 110 MBytes 91.8 Mbits/sec
> werewolf:/usr/src/linux# iperf -c ibook-fw
> ------------------------------------------------------------
> Client connecting to ibook-fw, TCP port 5001
> TCP window size: 16.0 KByte (default)
> ------------------------------------------------------------
> [ 3] local 192.168.1.1 port 33156 connected with 192.168.1.2 port 5001
> [ ID] Interval Transfer Bandwidth
> [ 3] 0.0-10.0 sec 90.5 MBytes 75.8 Mbits/sec

Try transferring larger amounts of data. perhaps there is not enough
data to provide a meaningful bandwidth measurement.

HTH,
Michael