Through cygwin3.0.7 version compiled iperf3.1.3 or iperf3.7 source code, get iperf3; In the client startup iperf3 -p threads, when set a larger number of threads (such as: greater than or equal to 78), the server startup iperf3 will appear "cygwin_exception: : open_stackdumpfile: Dumping stack trace to iperf3. Exe stackdump" error;

Some also encountered such a problem; Cygwin is imitation of Unix environment problem?