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 > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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