Re: [Discuss-gnuradio] Underflow and Overflow

[CEL]

Hi Alvin,

you've already gotten plenty of info on this list from where over- and
underflows come. 
We've really addressed all this before[1,2,3,4,5,6,7,8,9,10,11,12,etc],
and you've gotten sufficient recommendations. Please do avoid to spam
the mailing list with redundant questions.
Let me quickly give you a bit of perspective on this: If we consider
just the time spent to read your emails and write a quick answer, if
GNU Radio's community was a company, you will have amassed some work
cost of upwards of 1000 $. I'm very happy to say we're not a company,
but a community project, so that we can freely choose how to use our
time, help each other, and work on software. You are, however, becoming
a bit of a drain of time, so please consider condensing your questions
a bit more, making sure that everything you've been told has already
been taken into consideration, so that we can focus on giving good
answers – that, in the end, is in your own best interest, because you
risk getting ignored if you keep this up.

Best regards,
Marcus

[1] https://lists.gnu.org/archive/html/discuss-gnuradio/2018-05/msg0022
5.html
[2] https://lists.gnu.org/archive/html/discuss-gnuradio/2018-05/msg0023
0.html
[3] https://lists.gnu.org/archive/html/discuss-gnuradio/2018-05/msg0023
1.html
[4] https://lists.gnu.org/archive/html/discuss-gnuradio/2018-05/msg0024
2.html
[5] https://lists.gnu.org/archive/html/discuss-gnuradio/2018-05/msg0024
6.html
[6] https://lists.gnu.org/archive/html/discuss-gnuradio/2018-05/msg0028
8.html
[7] https://lists.gnu.org/archive/html/discuss-gnuradio/2018-05/msg0020
7.html
[8] https://lists.gnu.org/archive/html/discuss-gnuradio/2018-05/msg0020
9.html
[9] https://lists.gnu.org/archive/html/discuss-gnuradio/2018-05/msg0021
2.html
[10] https://lists.gnu.org/archive/html/discuss-gnuradio/2018-05/msg002
18.html
[11] https://lists.gnu.org/archive/html/discuss-gnuradio/2018-05/msg002
10.html
[12] …

On Tue, 2018-05-22 at 09:38 +0000, Yeo Jin Kuang Alvin (IA) wrote:
> Hi all,
>  
> May I know what causes my flowgraph to have so many U’s and O’s, is there any 
> block that causes this? I am trying to hit a higher sampling rate possibly 20 
> MHz or higher. I have searched online and some suggest switching to a 
> different OS and I did switch from windows to Ubuntu, only a slight 
> difference. Some say is the computer’s processing speed not fast enough, 
> thus, changing a better one will help. Others did mentioned that the 
> flowgraph connection might cause this problem.
>  
> I am getting “OOOUOO” when transmit a sine wave sampling at 20 MHz and 
> receive to a file sink.
>  
> I am using USRP B210, running on a Intel Core i7-4700MQ CPU @ 2.40 GHz x 8, 
> 64 bit computer.
>  
> Any help would be appreciated!
>  
> 
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

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