[rabbitmq-discuss] Consumers stopped consuming messages
simon at rabbitmq.com
Tue Jul 20 10:26:32 BST 2010
On 20/07/10 09:55, Florence Chabanois wrote:
> We noticed that /*sometimes*/, consumers hang (well, they are not
> blocked, but they dont consume messages anymore). We can see that
> because each consumer save around 100 msg/sec in database, so when one
> is stopping consumming, the overall messages saved per seconds in DB
> fall down with the same ratio (if let say 3 consumers stop, we fall
> around 600 msg/sec to 300 msg/sec).
> FYI there has been a similar issue here, but it wasn't resolved :
Hi Florence. One possibility that was considered in the linked thread
was that all the messages were being sent to some consumers due to
basic.qos not being set (in the absence of basic.qos, Rabbit is allowed
to do that).
* Are you setting the basic.qos prefetch count?
* What does rabbitmqctl lists_queues say about he queue when the system
is in this state?
* Are you able to post your spike code anywhere?
Staff Engineer, RabbitMQ
SpringSource, a division of VMware
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