Re: [Discuss-gnuradio] Contribute to the in-band project: profile the code

[George Nychis]

Dominik Auras wrote:
> Hi!
>
> I have tried to profile your code.

Thank you! :D

What are your machine specs?

> First thing I noted: The PMT library from your svn branch had to be
> installed with sudo make install. Now I installed the whole branch.

Yes, I forgot to mention this, thank you!  I will add it to the wiki.

> Next thing:
> When I run test_usrp_inband_rx, it takes very long time and produces
> messages:
> fusb: (rd status -2) No such file or directory

Interesting... I thought we had solved this with a commit before my 
e-mail of a USB patch Eric gave me.  I tested it with at least 50 runs 
on my machine and never saw it again after the patch.  Can you try doing 
a hard reset on the board (unplug/replug) and try running this again?

> These appear after "Closing the USRP". There is cpu usage only after
> this message, and only one core is used (is that right?). It takes more
> than 8 minutes, not 40s as in your example in the wiki. Since it
> appeared to hang, I have interrupted the execution.

Yes this is too long.  To make a long story short there seems to be a 
problem clearing the buffers in the FX2 which the USRP hangs on "Closing 
the USRP" because it's waiting for the buffers to clear...  we think!

Do a hard reset and try again, does it produce this error every time?

- George