[rabbitmq-discuss] rabbitmq-server crashes hard while consuming 31GB of RAM

Fri Jan 6 18:19:21 GMT 2012

On 29/11/11 10:56, Simon MacMullen wrote:
> On 28/11/11 19:26, Muharem Hrnjadovic wrote:
>> Simon, I plan to upgrade that server to ubuntu 11.10 which would give me
>> erlang 14.b.2 out of the box. Would that be good enough?
>
> Yes, that would be great. Thanks!

I know it's a month later and I believe you've reduced memory use in 
various ways, but I just saw this commit referenced on the Erlang 
mailing list:

http://erlang.org/pipermail/erlang-questions/2012-January/063593.html

https://github.com/erlang/otp/commit/caad36a5e2fc09d6a416fe31a7053bdfdb35c62d

Which points out that there's a bug in Erlang <= R14B03 which will cause 
the emulator to crash if a single process (i.e. not the entire server, 
but a single channel or queue or connection) tries to allocate more than 
32GB. This is probably pretty unlikely in RabbitMQ-land, but people with 
single gigantic queues should take note...

Cheers, Simon

-- 
Simon MacMullen
RabbitMQ, VMware