Re: [Discuss-gnuradio] A silly question

[Josh Blum]

On 08/24/2012 06:26 AM, sumitstop wrote:
> 
> Thanks Ryan...it worked for the three UHD warnings. Now I shall do something
> about
> 

http://files.ettus.com/uhd_docs/manual/html/general.html#disabling-or-redirecting-prints-to-stdout

Make this one-time call in c++ at the start of your process.

-josh

> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> linux; GNU C++ version 4.4.3; Boost_104000; UHD_003.004.003-177-g584b7ae2
> 
> -- Opening a USRP2/N-Series device...
> -- Current recv frame size: 1472 bytes
> -- Current send frame size: 1472 bytes
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>  
> 
> Wolfarth, Ryan wrote:
>>
>> If you execute the following commands you will get rid of those warnings.
>> These adjust the maximum read and write buffer sizes allowed that the OS
>> is
>> allowed to use for network interfaces.  See more here:
>> http://wwwx.cs.unc.edu/~sparkst/howto/network_tuning.php
>>
>> sudo sysctl -w net.core.rmem_max=50000000
>> sudo sysctl -w net.core.wmem_max=1048576
>>
>> You could add these lines in "/etc/sysctl.conf" if you don't want to type
>> those lines every time your system restarts.
>>
>> Regards,
>> Ryan
>>
>> On Fri, Aug 24, 2012 at 6:41 AM, sumitstop
>> <address@hidden>wrote:
>>
>>>
>>> Hi Community ,
>>> Whenever we open a UHD device following message appears on the terminal :
>>> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
>>> linux; GNU C++ version 4.4.3; Boost_104000; UHD_003.004.003-177-g584b7ae2
>>>
>>> -- 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
>>> Using Volk machine: sse4_1_32
>>> gain = 35.0
>>> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
>>>
>>> And after that the program continues. I have made my own customized
>>> spectrum
>>> sensing python script which is controlled by another bash script. I need
>>> to
>>> make a screencast when the whole process goes, but this much long warning
>>> at
>>> the beginning of every iteration is kind of irritating. I tried to find
>>> form
>>> where these are been echoed or printed but no help.
>>>
>>> If any body know the location of those files kindly help me out. I need
>>> to
>>> temporarily disable this echo.
>>> ** I tried >/dev/null thing but it is suppressing all the required
>>> contents
>>> also.
>>> Thanks :working:
>>>
>>>
>>> -----
>>> Sumit Kr.
>>> Research Assistant
>>> Communication Research center
>>> IIIT Hyderabad
>>> India
>>> --
>>> View this message in context:
>>> http://old.nabble.com/A-silly-question-tp34343561p34343561.html
>>> Sent from the GnuRadio mailing list archive at Nabble.com.
>>>
>>>
>>> _______________________________________________
>>> Discuss-gnuradio mailing list
>>> address@hidden
>>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>>
>>
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>>
>>
> 
> 
> -----
> Sumit Kr.
> Research Assistant
> Communication Research center
> IIIT Hyderabad
> India
>