[rabbitmq-discuss] OOM kill

Simon MacMullen simon at rabbitmq.com
Fri Mar 7 18:04:14 GMT 2014

On 07/03/2014 5:48PM, Jason McIntosh wrote:
> Simon:
> Is it messages or connections that it blocks?

It blocks connections from publishing new messages.

> I thought it would block
> new connections but still allow existing connections to publish
> messages?

No, that happens when you run out of file descriptors.

>  At what point does rabbit start paging to disk on the
> messages?  Is that at 50% of the vm memory threshold?

By default yes, see http://www.rabbitmq.com/memory.html#memsup-paging

It used to be hard coded at 20% in older versions.

Cheers, Simon

Simon MacMullen
RabbitMQ, Pivotal

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