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From: | Mattias Kjellsson |
Subject: | Re: [Discuss-gnuradio] USRP Overrun Problem |
Date: | Sat, 18 Apr 2009 14:30:15 +0200 |
User-agent: | Thunderbird 2.0.0.21 (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".
//Mattias
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