[rabbitmq-discuss] rabbitmqctl often hangs at the end of a query, e.g., list_queues, for a good 60 seconds or more (Windows 7)

John Apps johndapps at gmail.com
Mon Feb 1 11:41:54 GMT 2010

  I tried this out on another Windows 7 X64 machine I have and was unable to
reproduce the behaviour there. Rather than have this entry hang around,
please disregard for now.
When I have time I will pursue the matter and let you know what the cause

Thank you for the support, John

On Thu, Jan 28, 2010 at 00:35, Matthias Radestock <matthias at lshift.net>wrote:

> John,
> John Apps wrote:
>> Whilst not being a bug per se, it is annoying behaviour when rabbitmqctl
>> 'sits there' for quite some time.
> How long is 'quite some time'?
> And what rabbitmqctl command were you trying to run? list_queues (as per
> the subject line)? If so, how many queues did you have at the time?
> And when you say (in the subject line) that rabbitmqctl hangs *at the end*
> of a query, do you mean it displays the results and *then* hangs?
>  Interestingly enough, it does not accept <CTRL>C either.
> I'll have to find a Windows machine to try to reproduce that.
> Are you running the standard rabbitmqctl.bat script? In the other thread
> you posted some rabbitmqctl output which contained progress log information,
> which is not something we see in testing and for which the most plausible
> explanation is that some additional options have been passed to the erl
> executable.
>  This wait is only encountered when activity is going on with
>> RabbitMQ, no matter what it is.
> So this only happens when rabbit is really busy?
> Rabbit does prioritise handling of rabbitmqctl processing over most other
> tasks, but when the server is under heavy load it can still take some time
> to handle these requests. There is not much we can do about that really,
> since we wouldn't want to stop message processing altogether.
> Regards,
> Matthias.

John Apps
(49) 171 869 1813
Sent from Prien am Chiemsee, Bavaria, Germany
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