[erlang-bugs] heart prevents beam from creating crash dumps

Ulf Wiger <>
Mon Aug 27 10:30:55 CEST 2012

So the suggestion then would be to selectively close everything *but* the heart fd? :)

Ulf W

On 27 Aug 2012, at 10:16, Paul Guyot wrote:

>> It would be great if there was a way of simply figuring out the file 
>> descriptor numbers used for EPMD and/or heart from the C code. Then it 
>> would be easy to fix this. One possibility is to add a new BIF that 
>> stores the current EPMD port in a C variable. Then the loop that closes 
>> all ports could be replaced with a single close.
> I would like to strongly argue against a selected close of the epmd port.
> The main argument is that it singles out the node name as the only exclusive resource a node can have. Other resources cannot be shared between incarnations of the same node. For example, a node may open a pool of N connections to a database server which could be limited, by configuration, to a total count of M connections where M < 2 * N.
> Paul
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Ulf Wiger, Co-founder & Developer Advocate, Feuerlabs Inc.

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