I was able to confirm/validate the failure on a set of LXC containers: bladernr@xenial:~$ iperf3 -c 10.148.80.151 -i 60 -n 999G Connecting to host 10.148.80.151, port 5201 [ 4] local 10.148.80.13 port 44408 connected to 10.148.80.151 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-60.00 sec 464 GBytes 66.4 Gbits/sec 236 3.00 MBytes [ 4] 60.00-120.00 sec 456 GBytes 65.3 Gbits/sec 0 3.00 MBytes [ 4] 120.00-130.09 sec 78.8 GBytes 67.1 Gbits/sec 0 3.00 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-130.09 sec 999 GBytes 66.0 Gbits/sec 236 sender [ 4] 0.00-130.09 sec 999 GBytes 66.0 Gbits/sec receiver
bladernr@xenial:~$ iperf3 -c 10.148.80.151 -i 60 -n 1500G Connecting to host 10.148.80.151, port 5201 [ 4] local 10.148.80.13 port 44538 connected to 10.148.80.151 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-60.00 sec 456 GBytes 65.3 Gbits/sec 2851 1.16 MBytes [ 4] 60.00-120.00 sec 469 GBytes 67.1 Gbits/sec 66 2.48 MBytes q[ 4] 120.00-180.00 sec 469 GBytes 67.2 Gbits/sec 137 3.02 MBytes [ 4] 180.00-193.34 sec 106 GBytes 68.2 Gbits/sec 0 3.02 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-193.34 sec 0.00 (null)s 66.6 Gbits/sec 3054 sender [ 4] 0.00-193.34 sec 0.00 (null)s 66.6 Gbits/sec receiver bladernr@xenial:~$ apt-cache policy iperf3 iperf3: Installed: 3.0.11-1 Candidate: 3.0.11-1 Version table: *** 3.0.11-1 500 500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages 100 /var/lib/dpkg/status -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1795481 Title: iperf3 Transfer Summary shows NULL above certain point To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/iperf3/+bug/1795481/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs