[rabbitmq-discuss] Delay delivering messages

[Michael Burns]

Hi Alex,
I ran the multicast client and am getting speeds like:

sending rate: 3550 msg/s, basic returns: 0 ret/s
recving rate: 3461 msg/s, min/avg/max latency: 11931197/12253891/12477030
microseconds

If I let it run for a bit then sometimes both the sending and receiving rate
drop significantly e.g.:

sending rate: 638 msg/s, basic returns: 0 ret/s
recving rate: 628 msg/s, min/avg/max latency: 11788406/12363242/12735553
microseconds

Not sure if this drop is indicative of anything?

We're using the java client 1.8.1, the broker is rabbitmq_server-1.8.1

Thanks
Michael

On Fri, Sep 3, 2010 at 9:29 AM, Alexandru Scvorţov
<alexandru at rabbitmq.com>wrote:

> Hi Michael,
>
> > We are putting a very low volume of messages through and have sometimes
> had
> > to wait up to 15 minutes for a single message to be delivered (at the
> time
> > this was the only message in the system).
>
> That sounds strage.  Are you up for a bit of debugging?
>
> Download the java client,
>  http://www.rabbitmq.com/java-client.html
>
> Unpack it, and run
>  sh runjava.sh com.rabbitmq.examples.MulticastMain -x 1 -y 1
>
> That command will run one of our example programmes in a way that
> matches your setup: 1 producer (-x 1) and 1 consumer (-y 1).
>
> When I run it, I get speeds like:
>  recving rate: 6052 msg/s, min/avg/max latency: 1063522/1118048/1164637
> microseconds
>  sending rate: 6419 msg/s, basic returns: 0 ret/s
>
> If you're getting similar speeds, there's probably something wrong with
> the consumers/producers.  If not, it might be something to do with the
> server.
>
> Could you please try it?
>
> Also, which version the broker and which client are you using?
>
> Cheers,
> Alex
>
> On Fri, Sep 03, 2010 at 09:03:25AM +0100, Michael Burns wrote:
> > Hi,
> >
> > We're just starting out with RabbitMQ and have a very simple setup: one
> > queue, one producer doing a basicPublish and one consumer doing a
> > basicConsume using QueueingConsumer.
> >
> > For the most part it works fine however at fairly regular intervals we
> are
> > finding that messages remain on the queue for a considerable period
> before
> > being delivered to the consumer.
> >
> > We are putting a very low volume of messages through and have sometimes
> had
> > to wait up to 15 minutes for a single message to be delivered (at the
> time
> > this was the only message in the system).
> >
> > In all cases the messages are eventually delivered.
> >
> > I dont know where to start debugging this as there is nothing in the
> > RabbitMQ logs thats suggests something is going wrong - could anyone
> point
> > me in the right direction as to what may be causing this?
> >
> > Many Thanks,
> > Michael
>
> > _______________________________________________
> > rabbitmq-discuss mailing list
> > rabbitmq-discuss at lists.rabbitmq.com
> > https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss
>
>
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