zenglhua

Hi @davidBar-On , Thank you for your reply. After upgrade iperf3 to 3.18 version, the issue disappears. The issues seems fixed, may relevant to the following tickets. https://github.com/esnet/iperf/discussions/1707 https://github.com/esnet/iperf/issues/1741 https://github.com/esnet/iperf/pull/1787

> It may be that core 0 (per the `-A 0` setting) is loaded, and there are other cores that are free. Did you try running the server on other...