[rabbitmq-discuss] Rabbit MQ dropping connections and slow message delivery

Tue Feb 4 18:54:05 GMT 2014

Hi there,

Forgive me if any of this sounds foolish, I have recently started using
rabbit and am new to AMQP.

I noticed that messages sent to one of my queues can take up to a minute to
deliver. When looking at the log file, I see a constant stream of
connections being made, and then dropped:

=INFO REPORT==== 4-Feb-2014::18:33:54 ===
accepting AMQP connection <0.10790.0> ([::1]:56034 -> [::1]:5672)

=INFO REPORT==== 4-Feb-2014::18:33:54 ===
closing AMQP connection <0.10747.0> ([::1]:56020 -> [::1]:5672)

=INFO REPORT==== 4-Feb-2014::18:34:05 ===
accepting AMQP connection <0.10821.0> ([::1]:56035 -> [::1]:5672)

=ERROR REPORT==== 4-Feb-2014::18:34:13 ===
closing AMQP connection <0.10766.0> ([::1]:56022 -> [::1]:5672):
{heartbeat_timeout,running}

=INFO REPORT==== 4-Feb-2014::18:34:16 ===
accepting AMQP connection <0.10840.0> ([::1]:56037 -> [::1]:5672)

=INFO REPORT==== 4-Feb-2014::18:34:16 ===
closing AMQP connection <0.10787.0> ([::1]:56033 -> [::1]:5672)

=ERROR REPORT==== 4-Feb-2014::18:34:24 ===
closing AMQP connection <0.10790.0> ([::1]:56034 -> [::1]:5672):
{heartbeat_timeout,running}

In my use case, I am sending three messages simultaneously. Usually the
first message sent arrives more or less straight away, but then there is a
significant delay between the others. Here's a snapshot of the queued
message and message rates graphs over the period covering the three
messages:

http://imgur.com/ClN9TAJ

I am not sure I fully understand what or why is happening. This is just a
default installation on my local dev machine, with nothing modified
whatsoever.

If you would like any more information then let me know and I will provide
whatever I can

Cheers, Pete

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