I am doing spectrum sensing at 8MHz sampling rate using N210 series.
I have 4 USRPs accessible via switch.
But on setting sample rate as high as 8 MHz the code runs for few seconds
and comes out with UHD Error.
I did benchmark test as follows:-
*./benchmark_rate --args="addr=10.32.19.159" --rx_rate 3e6 --tx_rate 3e6*
*
*
*Report:-*
"UUUUUUUUOUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUOUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU"
Benchmark rate summary:
*Num received samples: 27897639*
* Num dropped samples: 2395800*
* Num overflows detected: 660*
* Num transmitted samples: 29685777*
* Num sequence errors: 0*
* Num underflows detected: 74568*
note:-There were many "UUU"s than pasted.
*./benchmark_rate --args="addr=10.32.19.159" --rx_rate 5e6 --tx_rate 5e6*
*
*
*Report:-*
Using Device: Single USRP:
Device: USRP2 / N-Series Device
Mboard 0: N210r4
RX Channel: 0
RX DSP: 0
RX Dboard: A
RX Subdev: SBXv3 RX
TX Channel: 0
TX DSP: 0
TX Dboard: A
TX Subdev: SBXv3 TX
UHD Warning:
Unable to set the thread priority. Performance may be negatively
affected.
Please see the general application notes in the manual for instructions.
EnvironmentError: OSError: error in pthread_setschedparam
UHD Warning:
Unable to set the thread priority. Performance may be negatively
affected.
Please see the general application notes in the manual for instructions.
EnvironmentError: OSError: error in pthread_setschedparam
Testing receive rate 5.000000 Msps
OTesting transmit rate 5.000000 Msps
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
*t erminate called after throwing an instance of 'uhd::runtime_error'*
what(): RuntimeError: fifo ctrl timed out looking for acks
Aborted
How can I achieve higher sample rate on my system?
Is it mainly due to switch in between?
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