The ports that iperf3 terminate on would be inside the ARM host in the Zynq. I would not expect stunning performance there.
For actual data, which is what you care about, the streams originate inside the FPGA logic. Sent from my iPhone > On Jul 21, 2020, at 10:59 AM, Pavlos Basaras via USRP-users > <usrp-users@lists.ettus.com> wrote: > > > Hello, > > i installed the usrp n310 following the instructions from > https://kb.ettus.com/USRP_N300/N310/N320/N321_Getting_Started_Guide > > I have the same uhd between the usrp and the host > > output of "uhd_find_devices" > [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; > UHD_3.15.0.HEAD-0-gaea0e2de > -------------------------------------------------- > -- UHD Device 0 > -------------------------------------------------- > Device Address: > serial: 31B4030 > addr: 192.168.20.2 > claimed: False > mgmt_addr: 192.168.10.2 <-- sfp0 > mgmt_addr: 192.168.20.2 <-- sfp1 > mgmt_addr: 192.168.40.70 <-- this is from the dhcp > product: n310 > type: n3xx > > > I can ping and ssh connect through any interface. > The uhd_usrp_probe command also appears to be correct also. > > > > The host has a network adapter x520-da2 with two sfp+ ports, one of which is > configured to be connected with the sfp 1 port of the usrp at 10G, whereas i > use another port (on a DIFFERENT NIC on the host) at 1G to connect to sfp > port 0 of the usrp. > For the fpga image as indicated by the quide i used: uhd_image_loader --args > "type=n3xx,addr=<N3xx_IP_ADDR>,fpga=HG" to have 1G for sfp 0 and 10G for the > sfp 1. > > I am trying to test the speed limit between the host and the host with iperf3. > > 1--- For the sfp0 (1G port) the speed is limited to about 200Mbps, which is > very low compared to the 1G port. I connect the host to the usrp with the 1 > RJ45 – SFP+ Adapter and the cat5e ethernet cable that came with the usrpn310. > I should see a significantly > higher speed (close to 1G), correct? > > 2--- For the sfp1(10G port) the speed is a bit higher e.g, 300Mbps, but after > only a few seconds it crushes with the error: iperf3: error - control socket > has closed unexpectedly. I am not sure if the problem is an iperf3 related > error/bug or there is stg wrong with the general setup. After this failure > the connection over the sfp1 port is lost, i cannot run another iper3 test > again or ping to this port. I also trying ifconfig down/up but it does not > work. Only after reboot i can reuse sfp port 1/ > > Example test: > iperf3 -s > iperf3 -c 192.168.20.2 -P 20 > > any suggestions??? > > all the best, > Pavlos. > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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