|Subject:||Re: [Discuss-gnuradio] USRP Overrun Problem|
|Date:||Sat, 18 Apr 2009 14:30:15 +0200|
|User-agent:||Thunderbird 220.127.116.11 (X11/20090318)|
Lizhao You wrote:
Hi all,I am testing an application, which receives data from usrp. The datarate is 2M, and samples_per_symbol is 2, decimation is 16. I am using a PC, with Ubuntu 8.10, intel pentium 4 cpu 2.40G, and 768M Memory. But the shell displays uOuOuO when running. I know it means usrp overrun. I am not opening any large programs except internet brower. Because i cannot change the decimation and sample_per_symbol, What method can i use to avoid usrp overrun? Any help in this regard would be highly appreciated, and thank you for your help!Regards, Lizhao
Hi Lizhao,Have a look in "/proc/cpuinfo" to see your current cpu- speed, Ubuntu 8.10 introduced a frequency- scaling thing, which sometimes messes with you and set your cpu to work at a lower clock- speed.
If that doesn't work, you could probably try to elevate your programs scheduling, have a look at "gruel".
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