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From Jose María Zaragoza <demablo...@gmail.com>
Subject Re: Model thread question
Date Wed, 04 Sep 2013 20:40:32 GMT
Reading "ActiveMQ in action"  doesn't say anything about pool of
threads ( one per consumer )   :-S

What a mess ...



2013/9/4 Jose María Zaragoza <demablogia@gmail.com>:
> Thanks.
>
> So , PDF is wrong , right ?
> what about pool of thread , i.e, one per MessageConsumer ? is it false ?
> does internal queues exists ?
>
> I'm confuse , sorry
>
>
>
> 2013/9/4 Christian Posta <christian.posta@gmail.com>:
>> AFAIK...you have a logical thread for the transport that pulls data off the
>> socket, and then a thread for each session. So a single session can have
>> multiple consumers, but a single session thread would dispatch to the
>> consumers.
>>
>>
>> On Wed, Sep 4, 2013 at 11:17 AM, Jose María Zaragoza
>> <demablogia@gmail.com>wrote:
>>
>>> Hello:
>>>
>>> I'm using Apache ActiveMQ 5.8 and I've got a question about thread
>>> model on consumer side
>>> I don't know either there is a thread pool per MessageConsumer or
>>> there is a only one thread
>>>
>>>
>>> About this link
>>>
>>> http://activemq.apache.org/multiple-consumers-on-a-queue.html
>>>
>>> "The JMS contract is that only 1 session is used by one thread at once
>>> - which if you're using consumers means that only 1 consumer can
>>> receive messages at once if using the same session. So if you want
>>> concurrent consumption of messages, you need to use different sessions
>>> for each consumer."
>>>
>>>
>>> But about this link
>>>
>>> http://fusesource.com/docs/esbent/7.0/amq_tuning/amq_tuning.pdf
>>>
>>> "The second thread layer consists of a pool of threads, where each
>>> thread is associated with a javax.jms.MessageConsumer instance. Each
>>> thread in this layer picks the
>>> relevant messages out of the session queue, inserting each message
>>> into a queue inside the javax.jms.MessageConsumer instance."
>>>
>>>
>>> What is the true ?
>>>
>>> is there a thread pool per MessageConsumer ? or is there a only one thread
>>> ?
>>>
>>>
>>> Thanks and regards
>>>
>>
>>
>>
>> --
>> *Christian Posta*
>> http://www.christianposta.com/blog
>> twitter: @christianposta

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