[rabbitmq-discuss] STOMP performance problems at > 1200 messages/s

[Matthias Radestock]

On 08/11/11 18:22, Al Tobey wrote:
> 1.) We started paying attention and caring about delays

If messages were "going in and coming out just fine at 5000-6000 
messages/s", then no backlog, and hence no increasing delay, can have 
developed.

If rabbit was happily coping with 5-6kHz at one point, without creating 
a backlog, but later on it was only managing 1.2kHz then one possible 
explanation is that a temporary spike may have caused enough of a 
backlog to build up to force rabbit to page to disk, at which point 
performance drops until the backlog clears.

> 2.) Load increased, by as much as 2x depending on time of day

So is your main complaint then that the message rates rabbit can cope 
with when using stomp are lower than what you expect to see? If so, what 
is that expectation based on? A comparison with using RabbitMQ with 
AMQP? Rabbit's stomp processing is a fair bit slower than handling AMQP.


Regards,

Matthias.