Gssm_usrp.py usrp overrun?

Hello,
im trying to use the gssm_usrp.py script together with wireshark in
order to see the GSM packets on the 936MHz frequency.
I run gnuradio3.2.1.
But when i run the script i get the following usrp Overrun :

[email protected]:~/Desktop/airprobe/gssm/src/python$ sudo ./gssm_usrp.py

gr_fir_ccf: using SSE
gr_fir_fff: using SSE
uOuOuOuOuOuOuOuOuO

I run it on an Dell computer with Intel Pentium4 2.8GHz, 1GB RAM with
Ubuntu 9.04 kernel version 2.6.30.9

I also tried on an Intel 3GHz, 2GB RAM with Ubuntu 9.04 and standard
kernel and get the same trace.

It gives the same if i set the sample width to 8 bits for the usrp
source.
Does anybody know if my hardware is to slow to manage the packets or is
there another issue with the script or gnuradio?

Thanks to all
Sylvain

Sylvain,

Truthfully, that project is very old and I’m not surprised that you’re
having issues with it. I only keep the page up for reference purposes.

I recommend you check out the airprobe project.
( https://svn.berlin.ccc.de/projects/airprobe .) This project is being
actively supported and should be a lot easier to get to work.

I’ll put something up on the GSSM page that indicates this so that other
people don’t end up wasting time trying to get gssm to run.

Quoting Sylv1 ([email protected]):

Hello,
thanks for the answer but actually gssm is part of the airprobe project.
This is the source is use.
My first thought is that my computer is to slow to manage the packets
sent on the USB.
I will try to test it on new computer and let you know once done.
But if someone knows the problem, pelase help me.
Thks
Sylvain

— On Tue, 11/3/09, Joshua L. [email protected] wrote:

From: Joshua L. [email protected]
Subject: Re: [Discuss-gnuradio] gssm_usrp.py usrp overrun?
To: “Sylv1” [email protected]
Cc: [email protected]
Date: Tuesday, November 3, 2009, 11:04 PM

Sylvain,

Truthfully, that project is very old and I’m not surprised that you’re
having issues with it. I only keep the page up for reference purposes.

I recommend you check out the airprobe project.
( https://svn.berlin.ccc.de/projects/airprobe .)Â This project is being
actively supported and should be a lot easier to get to work.

I’ll put something up on the GSSM page that indicates this so that other
people don’t end up wasting time trying to get gssm to run.

Quoting Sylv1 ([email protected]):

Hmmm… Interesting. I didn’t realize they saved those bits.

I’ll have to grab their files and figure out what they are doing.

Quoting Sylv1 ([email protected]):