[rabbitmq-discuss] Performance Issue

Tue Jan 15 02:45:39 GMT 2013

Thanks Matthias,

1) How many Erlang processes should normally run? - we have arround 100
queues.
2) What is a good way to upgrade Rabbit seamlessly to production.

Thanks,
   Pavel

On Mon, Jan 14, 2013 at 8:56 PM, Matthias Radestock
<matthias at rabbitmq.com>wrote:

> Pavel,
>
> On 15/01/13 00:18, Pavel Kogan wrote:
>
>> 1) Rabbit version: 2.8.4
>>
>
> That's ancient. There have been many bug fixes and other improvements,
> including to performance.
>
> Please upgrade.
>
>       Erlang version: R14B04
>>
>
> That's ok, though R15B03 would be better.
>
>
>  2) The other queues are some idle some working (not very hard - up to
>> 30-40 message per second).
>>
>
> Your management screen shot indicated 16815 Erlang processes. Unless
> something weird is going on (which is possible, since you are running such
> an old version of rabbit) that means you must have thousands of queues. Is
> that what you are expecting to see?
>
>
>  5) We are declaring queue only once on initialization (we are using JAVA
>> client).
>>
>
> I only mentioned that as an example. Basically you'll want to make sure
> that on your consuming channel there is usually nothing but basic.acks
> flowing from the client to the broker.
>
> Regards,
>
> Matthias.
>
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