I think if you want to smooth it out, you'll need to add the packets to a custom queue and use your own transmit thread rather than trying to do it all in the work function. That way you can send consistent-sized packets and adjust the per-packet timing if you need to.
On Sun, Mar 4, 2018 at 7:23 PM, Firdavs Pulat <firda...@gmail.com> wrote: > Setting it on the UDP itself didn't change the behavior either. Do you (or > anyone else) have any other ideas? > > Thank you > > > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> > Virus-free. > www.avast.com > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> > <#m_-4079682633075123343_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > On Sun, Mar 4, 2018 at 5:16 PM, Jeff Long <willco...@gmail.com> wrote: > >> I think you'd want to set that on the UDP sink itself. >> >> On 03/04/2018 01:30 PM, Firdavs Pulat wrote: >> >>> Thanks for the suggestion, Jeff. Unfortunately, that didn't seem to >>> help. I still see bursty packet transmission. >>> >>> Btw, currently I have: USRP source --> Low-Pass Filter --> >>> ComplexToInterleavedShort --> Endian Swap --> UDP Sink. I added the >>> set_max_noutput_items line at the output of the Endian Swap block since >>> that would be the input to UDP. Is that the only place where I would have >>> to make that change, or on all the blocks? >>> >>> Thanks! >>> >>> >>> <https://www.avast.com/sig-email?utm_medium=email&utm_source >>> =link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> >>> Virus-free. www.avast.com <https://www.avast.com/sig-ema >>> il?utm_medium=email&utm_source=link&utm_campaign=sig-email&u >>> tm_content=webmail&utm_term=link> >>> >>> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >>> >>> >>> On Sun, Mar 4, 2018 at 6:44 AM, Jeff Long <willco...@gmail.com <mailto: >>> willco...@gmail.com>> wrote: >>> >>> Try yourblock.set_max_noutput_items(1024/itemsize) >>> >>> >>> On 03/03/2018 09:57 PM, Firdavs Pulat wrote: >>> >>> Hello everyone, >>> >>> I have a B200mini device I'm communicating over USB to a pc >>> which is running the gnuradio software. The gnuradio does some >>> processing (e.g., low-pass filtering, data type conversion, >>> etc), and finally gets to the UDP sink block where packets are >>> generated and sent through Ethernet to an external device. The >>> issue I'm having is that, in the UDP block, >>> noutput_items*d_itemsize size is alot larger than the UDP >>> payload size (1024 bytes). So, UDP gets 4-6K worth of bytes and >>> bursts it all out really fast (I can see this behavior in >>> Wireshark), then waits to buffer up another 4-6K bytes, and >>> sends it all out really fast. This process then continues. Is >>> there a way to smooth this out so that it's not bursting bunch >>> of packets all at once? Otherwise the external device isn't able >>> to keep up and it's leading to tons of dropped packets. >>> >>> I tried setting the max output buffer in python but I get this >>> warning when I run: gr::log :WARN: flat_flowgraph - Block >>> (endian_swap_impl0) max output buffer set to 2048 instead of >>> requested 512. >>> >>> Any ideas on what I can do to change this behaviour? >>> >>> Thanks! >>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discuss-gnuradio@gnu.org <mailto:Discuss-gnuradio@gnu.org> >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> <https://lists.gnu.org/mailman/listinfo/discuss-gnuradio> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discuss-gnuradio@gnu.org <mailto:Discuss-gnuradio@gnu.org> >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> <https://lists.gnu.org/mailman/listinfo/discuss-gnuradio> >>> >>> >>> > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
