https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=281560
--- Comment #16 from Mark Johnston <ma...@freebsd.org> --- This smells a bit like a thread disabled interrupts and then went off-CPU somehow. The iperf thread is stuck in the runqueue of a CPU and nothing gets scheduled there, so it doesn't run. If this is not enough of a hint, we could try enabling scheduler tracing: - add the following to your kernel config: options KTR options KTR_COMPILE=(KTR_SCHED) options KTR_ENTRIES=(256*1024) - before starting your test, enable KTR tracing: # sysctl debug.ktr.enable=0x20000000 - once the hang occurs, use ktrdump (or "show ktr" in DDB) to dump scheduler traces -- You are receiving this mail because: You are the assignee for the bug.
