What steps will reproduce the problem? 1. Lauch JPerf (sh ./jperf.sh) as server on Ubuntu server. 2. A client use iperf as client on Linux OS. 3. After finished, throughput value could be got from server console, but the chart had no value, always 0.

What is the expected output? What do you see instead? [Expect] The value in the chart should be showed as the output value in the console.

What version of the product are you using? On what operating system? [Version] jperf-2.0.2 / Ubuntu 10.04LTS (Kernel: 2.6.32-24-generic)

Please provide any additional information below. None.

Hello I have the same issue on Ubuntu 11.10 on a 64bits PC, Kernel 3.1.0. The trace is not appearing until a very long period - around 2500s) and stops again.

JRE : openjdk-7-jre