Uhd_fft freezes after some seconds

GNU Radio
1

Hi lists,

I’ve installed the lastest GNU Radio and UHD by build-gnuradio script on
Ubuntu 12.04 LTS, everything is OK. I run the uhd_fft.grc example with
samplerate is 25Msps and it works well but when I change the samplerate
(different with 25 Msps), it just freezes after some seconds.

Could you help me, please?

Best regards,

LTP

2

You are almost certainly sampling faster than your computer can
handle, the queue gets backed up and WXFFT stops responding to GUI
messages, sample at a slower rate. My old PC can not do more than 1
Msps w/o locking up.