Actually uhd_usrp_probe looks only at the connection MTU for the warning. Once you raise that it goes away:)
Nikos On Fri, Apr 29, 2022 at 4:56 PM Nikos Balkanas <[email protected]> wrote: > > Besides, with uhd_usrp_probe reporting this issue, it seems that it is > external to uhd, > else we will be getting always the same warning:( > > Nikos > > On Fri, Apr 29, 2022 at 1:47 PM Nikos Balkanas <[email protected]> wrote: > > > > Thx, > > > > I remember a few years back I changed NIC properties and I got max > > samples to 1996. > > No changes in uhd calls. When I upgraded and reinstalled the NIC > > driver, I lost those settings, > > and now I am getting max samples 396:( > > I remember changing things like coalescense, but I don't remember what > > and by how much. > > Back then I got the advice from here. So, if anyone remembers... > > For now I will change my MTU and pass the sizes to the device... > > > > BR > > Nikos > > > > On Fri, Apr 29, 2022 at 3:39 PM Marcus D. Leech <[email protected]> > > wrote: > > > > > > On 2022-04-29 03:50, Nikos Balkanas wrote: > > > > Hi, > > > > > > > > uhd_usrp_probe reports that I should raise my send_frame_size & > > > > recv_frame_size arguments. > > > > USRP Manual, transport notes, report to change them in device or > > > > stream arguments. > > > > Anyone knows how to change these settings in the NIC? > > > > I have a 10 Gb MLNX NIC and just upgraded my Ubuntu from 14.04 to > > > > 20.04. I am pretty sure I had some of these optimizations in the NIC > > > > using ethtool? Anyone remembers what these optimizations were? > > > > > > > > TIA > > > > Nikos > > > > _______________________________________________ > > > > USRP-users mailing list -- [email protected] > > > > To unsubscribe send an email to [email protected] > > > These are device arguments -- part of UHD: > > > > > > https://files.ettus.com/manual/page_transport.html > > > > > > > > > Now, IN ADDITION, to actually support those, your NIC must have its MTU > > > changed to support the larger frame sizes -- you can just use the > > > Network device manager > > > in the GUI to change this. Normally, though, a 10GB NIC will have a > > > larger MTU by default. > > > > > > _______________________________________________ > > > USRP-users mailing list -- [email protected] > > > To unsubscribe send an email to [email protected] _______________________________________________ USRP-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
