Re: [Discuss-gnuradio] A silly question

[Ryan Wolfarth]

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
--
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