[rabbitmq-discuss] Stats node getting slow

[Simon MacMullen]

On 11/11/2013 9:45AM, Simon MacMullen wrote:
> Hmm, the stats DB was more or less rewritten between 3.0.x and 3.1.0 (to
> keep stats histories). If there's a memory leak in there I'd very much
> like to get to the bottom of it.

Of course the other possibility is that the stats DB is simply 
overwhelmed with work and unable to keep up. It's supposed to start 
dropping incoming stats messages in this situation, but maybe it isn't. 
To determine if this is the case, look at:

rabbitmqctl eval 'process_info(global:whereis_name(rabbit_mgmt_db), 
memory).'

- and if the number that comes back looks like it would account for most 
of the memory used, then that is likely to be the problem. In that case 
you can slow down stats event emission by changing 
collect_statistics_interval (see http://www.rabbitmq.com/configure.html) 
and / or disable fine-grained stats as I mentioned in the previous message.

Cheers, Simon

-- 
Simon MacMullen
RabbitMQ, Pivotal