[erlang-questions] hanging nodes

Vlad Dumitrescu <>
Wed Aug 20 11:18:07 CEST 2014


Some details: the beam process seems to have a thread that sits and does
something. I don't know if the following example stack helps.

best regards,
Vlad

wow64cpu.dll!TurboDispatchJumpAddressEnd+0x63b
wow64.dll!Wow64SystemServiceEx+0x1ce
wow64.dll!Wow64LdrpInitialize+0x42a
ntdll.dll!RtlIsDosDeviceName_U+0x23a27
ntdll.dll!LdrInitializeThunk+0xe

kernel32.dll!SetEvent+0x2
beam.smp.dll!fd_stop+0x4f
beam.smp.dll!terminate_port+0x64
beam.smp.dll!erts_deliver_port_exit+0x225
beam.smp.dll!driver_failure_atom+0x93
beam.smp.dll!ready_output+0xa9
beam.smp.dll!erts_port_task_execute+0x28d
beam.smp.dll!schedule+0xb24
beam.smp.dll!_process_main+0x125
ntdll.dll!RtlImageNtHeader+0x716
beam.smp.dll!do_erts_alcu_free+0x5f
beam.smp.dll!erts_alcu_free_thr_spec+0x58
beam.smp.dll!thr_wrapper+0xa6
kernel32.dll!BaseThreadInitThunk+0x12
ntdll.dll!RtlInitializeExceptionChain+0x63
ntdll.dll!RtlInitializeExceptionChain+0x36



On Wed, Aug 20, 2014 at 10:26 AM, Vlad Dumitrescu <>
wrote:

> Hi!
>
> I have some nodes that don't want to terminate and that I can't connect
> to. Most of the times the nodes unregister from epmd, but even when they
> don't they still are inaccessible.
>
> I was hoping that by connecting to the node I can see why it is hanging,
> but I get the feeling that the hanging is not inside user code (because
> epmd detects the socket being closed, so the shutdown process is started).
>
> This is on Windows, but I have some reports for something that looks
> similar from Linux too.
> I'm not used to debugging this kind of situations, so I hope that someone
> has some advice for me.
>
> best regards,
> Vlad
>
>
>
>
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