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Re: [Discuss-gnuradio] uhd_fft and rx_ascii_art_dft die after 30 seconds

From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] uhd_fft and rx_ascii_art_dft die after 30 seconds
Date: Sun, 30 Oct 2011 23:36:25 -0400
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20101027 Fedora/3.0.10-1.fc12 Thunderbird/3.0.10

On 30/10/11 11:27 PM, Clark Pope wrote:
> I am running ubuntu 10.04 in vmware and connecting to an n210 via a gigabit 
> ethernet USB dongle. When I run either uhd_fft.py or rx_ascii_art_dft all 
> works fine for exactly 30 seconds and then the data display stops updating. 
> If I rerun the app it works again for 30 seconds and stops. 
> In wireshark the data looks good coming from to port 49156 until 
> it hangs then pc sends packet on 35433 and usrp reponds on 49152 and it just 
> goes back and forth forever. 
> there's plenty of disk space and memory and no messages in dmesg. doesn't 
> seem to matter what sample rate I choose. I assume it has something to do 
> with vmware but just guessing. Any ideas? Thanks                              
> _______________________________________________
I would suspect some combination of VMWare and your USB Ethernet
dongle.  USB-2.0 operates at
  480Msps *maximum*, which is just shy of *half* of the required Gigabit
rates supported by
  *real* Gigabit ethernet cards.

Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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