[rabbitmq-discuss] RabbitMQ scaling with OpenStack

Tue Jan 22 14:29:17 GMT 2013

On Jan 22, 2013, at 2:10 PM, Matthias Radestock <matthias at rabbitmq.com> wrote:

> On 22/01/13 13:58, Ask Solem wrote:
>> In my benchmarks I suddenly noticed queue_declare calls taking
>> several seconds to complete,
> 
> That doesn't sound right.

Do note that this is an anecdote, not a confirmed problem.

It could've been something affecting the environment or with the platform (OSX),
but something to investigate if he is seeing low numbers while doing
lots of queue_declare calls.

> 
>> I discussed it with other rabbit developers and they told me that this could
>> be caused by the broker having to do fsync's, and it may be more likely
>> if the queue is declared with the auto_delete flag.
> 
> 'durable', perhaps. But it still shouldn't take seconds.