[erlang-questions] Creating a diagnostic memory dump of live erlang VM

Anton Lebedevich <>
Thu Feb 20 09:26:16 CET 2014

On 02/19/2014 04:00 AM, Vladimir Ralev wrote:
> Hello all,
> As a Java developer I really miss being able to create a "heap dump" of
> a live Erlang VM where I can see the objects in each process and the
> current process stack variables/trace. I realise there is no java-like
> heap in Erlang but there are the processes, mailboxes, stacks, file
> handles, sockets, ets and so on.

Another thing which I missed a lot after converting from java to erlang
is a thread dump. It turned out that it's possible to get all
stacktraces for all processes (even with function arguments) via

It returns them as text so it's better to dump it to file immediately:

Format of these traces is quite interesting (undocumented) the best
description I found is in the mailing list

Anton Lebedevich.

More information about the erlang-questions mailing list