Hey!

I have no Tobi-Duo but I designed a similar hardware, with two ethernet ports that should be here to test by next week,
then I'll have a look on its Ethernet Performance.
I wouldn't wonder, if this is a hardware problem, because the layout of the Tobi-Duo crap², but we'll see

BTW: if you do speed testing, do it with large files, not with kb sized jpgs, otherwhise you won't get any compareable results!


Regards

Bernhard Wörndl-Aichriedler



Am 17.05.2010 19:09, schrieb mjiang:
NEED HELP!!!

I got my units wrong in my previous email they should be 3MBytes/sec and
90KBytes/sec which is a factor of 30 difference between the two ports.

We ran a test again with each port independently and have confirmed data
rates:

When we test port1, the network data rate is 3 MBytes/sec from our device to
the gumstix and it is about 9 MBytes/sec between our computer and the
gumstix:

#########################
bagside@bagvapp:/tmp$ wget http://10.10.100.113/tmp/img.jpg.1
--2010-05-17 18:45:36--  http://10.10.100.113/tmp/img.jpg.1
Connecting to 10.10.100.113:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 126743 (124K) [text/plain]
Saving to: `img.jpg.1.1'

100%[======================================>] 126,743     --.-K/s   in 0.01s   

2010-05-17 18:45:36 (9.64 MB/s) - `img.jpg.1.1' saved [126743/126743]
########################################################

When we test port2, the network data rate between our device and the gumstix
is only 57 KBytes/sec and about 102KBytes/sec between our computer and the
gumstix:

########################################################
bagside@bagvapp:/tmp$ wget http://10.10.100.119/tmp/img.jpg
--2010-05-17 19:03:41--  http://10.10.100.119/tmp/img.jpg
Connecting to 10.10.100.119:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 126743 (124K) [image/jpeg]
Saving to: `img.jpg.3'

100%[======================================>] 126,743      102K/s   in 1.2s    

2010-05-17 19:03:43 (102 KB/s) - `img.jpg.3' saved [126743/126743]
#########################################################

We tested this on 2 Tobi Duos, and same issues exist. Could this be a design
or hardware problem with the tobi duo board? Or is it possible one of the
network ports is defective? We have installed Networkmanager, and running
boa. 

This is a urgent request, please help me out, thanks!


mjiang wrote:
  
Hello,

 

I was trying to implement my project with gumstix overo water mounting
on the Tobi-Duo expansion board. The problem is that when I test the
Tobi-Duo, one of its two 10/100 base network port only give me about
90kb/s transfer speed, while the other one seems alright which gives me
about 3Mb/s. I have ordered 2 Tobi-Duo boards, and they both shows the
same issue. The slow port is always the one far away from the power
supply plug in. 

 

I have been trying different images including prebuilt and my own, but
the issue keeps still. Has anyone encountered the same problem as me?
This is really annoying, because except for the low transfer rate,
everything else works fine. It is urgent for my project, and I
appreciate for any suggestions. 

 

Ming 

 

 

 


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