Re: [Discuss-gnuradio] Bitrate doubt

[Mattias Kjellsson]

amarnath alapati wrote:
> hi folks,
>          I am using BENCHMARK_TX.PY, BENCHMARK_RX.PY to test the 
> transmission and reception of signals. I have doubts regarding the 
> outpu that is appearing on the screen.
>
> >>> gr_fir_fff: using SSE
> socket(PF_PACKET, SOCK_RAW, htons(0xBEEF)): Operation not permitted
> eth0: socket: No such file or directory
> Requested RX Bitrate: 100k
> Actual Bitrate: 125k
> Warning: Failed to enable realtime scheduling.
>
>
> 1) What is the SOCKET part in the output
Running as root should resolve this. But this should also be resolved by 
means described on the wiki- page.
> 2) What is the difference between Actual Bitrate and Requested Bitrate
The actual bit rate is calculated from a couple of parameters, and I 
think actual bit- rate is "close enough" to the requested one, given 
that there are some limitations regarding decimation/interpolation rates 
and so forth...
> 3)How to enable real time scheduling
There are some ways to elivate the privs. The quickest way is to run the 
aplication as root. This is not the recomended way, which has something 
to do with setting some privlegies and execution bits for an 
application. More information should be avaliable in the archives, and 
on the wiki- page.