Hello Everyone,
Not sure if this is already discussed here.
I am facing segmentation fault when running benchmark_rx in narrowband
examples. It seems like those example used to work fine before, but now
they are having these issues.
on the receiver side
===================================
manu@radio3:narrowband$ ./benchmark_rx.py -f 900M -m bpsk --rx-gain=25 -r 1M
linux; GNU C++ version 4.6.3; Boost_104800; UHD_003.006.002-1-g9fd308b3
Using Volk machine: avx_64_mmx_orc
-- Opening a USRP2/N-Series device...
-- Current recv frame size: 1472 bytes
-- Current send frame size: 1472 bytes
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The send buffer could not be resized sufficiently.
Target sock buff size: 1048576 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.wmem_max=1048576
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
Warning: Failed to enable realtime scheduling.
Segmentation fault (core dumped)
==============================================
What is confusing is that the segmentation fault comes when the transmitter
is initialized.
On the other hand when I run gmsk it seems to work fine.
================================================
manu@radio3:narrowband$ ./benchmark_rx.py -f 900M -m gmsk --rx-gain=25 -r 2M
linux; GNU C++ version 4.6.3; Boost_104800; UHD_003.006.002-1-g9fd308b3
Using Volk machine: avx_64_mmx_orc
-- Opening a USRP2/N-Series device...
-- Current recv frame size: 1472 bytes
-- Current send frame size: 1472 bytes
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The recv buffer could not be resized sufficiently.
Target sock buff size: 50000000 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.rmem_max=50000000
UHD Warning:
The send buffer could not be resized sufficiently.
Target sock buff size: 1048576 bytes.
Actual sock buff size: 1000000 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.wmem_max=1048576
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:
The requested decimation is odd; the user should expect CIC rolloff.
Select an even decimation to ensure that a halfband filter is enabled.
decimation = dsp_rate/samp_rate -> 25 = (100.000000 MHz)/(4.000000 MHz)
Warning: Failed to enable realtime scheduling.
UHD Warning:
The requested decimation is odd; the user should expect CIC rolloff.
Select an even decimation to ensure that a halfband filter is enabled.
decimation = dsp_rate/samp_rate -> 25 = (100.000000 MHz)/(4.000000 MHz)
ok = True pktno = 0 n_rcvd = 1 n_right = 1
ok = True pktno = 1 n_rcvd = 2 n_right = 2
ok = True pktno = 2 n_rcvd = 3 n_right = 3
ok = True pktno = 3 n_rcvd = 4 n_right = 4
ok = True pktno = 4 n_rcvd = 5 n_right = 5
ok = True pktno = 5 n_rcvd = 6 n_right = 6
===================================================
===================================================
manu@radio3:narrowband$ gnuradio-config-info -v
v3.7.2.1-159-g3fa56a46
manu@radio3:narrowband$ uname --all
Linux radio3 3.8.0-36-generic #52~precise1-Ubuntu SMP Mon Feb 3 21:54:46
UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
===================================================
Any ideas??
--
Manu T S
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