Christoph, we have occasionally heard about this issue. Can you please open an issue on https://github.com/EttusResearch/uhd/issues. The more data we have on this, the better. It's possible this may affect other USRPs, too.
--M On Fri, Nov 26, 2021 at 9:10 AM Christoph Schultz (Riedel) < christoph.schu...@riedel.net> wrote: > Dear Gnuradio Users, > > > > I am facing a crash when repeatedly receiving data on a X300 using > Gnuradio. > > To run into this issue, I load a top_block with a usrp_source, a head and > a file_sink initially. > > Then a sequence of start()-wait()-stop()-wait()-reconfigure is run for > e.g. 200 times. > > After a deterministic number of cycles the following error will appear: > > > > thread[thread-per-block[0] <block usrp_source(1)>]: RfnocError: OpTimeout: > Control operation timed out waiting for space in command buffer > > Similar to the issue discussed here: > > https://www.mail-archive.com/usrp-users@lists.ettus.com/msg11413.html > > my first idea was, that the command buffer is getting filled faster than > it is sent to the USRP device, but artificial sleeps between the loop > cycles do not change the behavior at all. > > > > I was also not successful in reloading the usrp_source object on Python > level (without stopping the full python process, and restarting it again > manually). > > > > So it looks like the gnuradio functions leave something in the command > buffer which I couldn’t clear so far without reloading the whole library by > restarting Python. > > Is this a known issue? Are there any ways to manually release the command > buffer, or is it a potential bug, which should go to the bug tracker of gr? > > > > Many thanks in advance and > > Best regards > > Christoph > > > > Christoph Schultz > RF System Architect > > > [image: RIEDEL at Social Media] > <https://www.riedel.net/en/social-media-links/> > ____________________________ > > RIEDEL > Communications GmbH & Co. KG > Uellendahler Str. 353 > 42109 Wuppertal > Deutschland > > phone: +49 202 292-9150 > > christoph.schu...@riedel.net > www.riedel.net > ____________________________ > RIEDEL Communications GmbH & Co. KG > Registergericht: Amtsgericht Wuppertal HRA 22390 > Umsatzsteuer-Identifikationsnummer: DE 814906984 > Komplementärin: RIEDEL Communications International GmbH, Wuppertal > Registergericht: Amtsgericht Wuppertal HRB 17038 > Geschäftsführer: Thomas Riedel, Frank Eischet, Martin Berger > > > >
