Ron, Can you elaborate on what the changes you referenced are and their consequences? In my past experience, increasing the frame size has been critical to achieving full-rate throughput on the B200 series.
Jason > On Feb 8, 2019, at 3:45 PM, Ron Economos via USRP-users > <usrp-users@lists.ettus.com> wrote: > > The recv_frame_size behavior has been changed in UHD after v3.13.0.3-rc1. If > you want to experiment with large frame sizes, you have to go back to > v3.13.0.3-rc1 or before. > > Ron > > On 2/8/19 03:23, Krzysztof Wisniewski via USRP-users wrote: >> Dear users, >> >> I’m new to Ettus SDR therefor I might be missing some basic knowledge. >> However I’ve read that in order to increase RX capture performance I should >> fiddle with recv_frame_size and num_recv_frames. While increasing the latter >> parameter gives good results, increasing recv_frame_size gives me >> ERROR_CODE_TIMEOUT. I’ve went through the UHD code and it seems that my >> version of USRP should support values <n a range of <40; 16360>. Could >> someone explain why I’m getting those errors? >> >> My UHD version: linux; GNU C++ version 7.3.0; Boost_106501; >> UHD_3.14.0.HEAD-0-gd20a7ae2 >> >> I’m using rx_to_file.py, this is the command I’m using: >> >> sudo nice -21 python rx_to_file.py --args recv_frame_size=8192, >> num_recv_frames=256,serial=317B9F8 --output-file >> /home/odroid/shared/rx_captured.txt --freq 2440e6 --rate=45e6 --duration 0.1 >> >> I’ve tried it on B205mini-I with the same result. >> >> Regards, >> Kris >> >> >> >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com <mailto:USRP-users@lists.ettus.com> >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> <http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com> > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com <mailto:USRP-users@lists.ettus.com> > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > <http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com>
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