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From activemqny <nianlo...@yahoo.com>
Subject Re: Nework of brokers and Topic leak memory
Date Tue, 07 Oct 2008 23:03:23 GMT

Can you explain why after ALL messages have been delivered to consumer,
memory usage stays at 100%?

How do I disabled producer flow throw API call?

Thanks,

-Neal


bsnyder wrote:
> 
> On Tue, Oct 7, 2008 at 3:04 PM, activemqny <nianlongy@yahoo.com> wrote:
>>
>> We  use a network of brokers and topic to do messaging. All our message
>> producers and consumers talk to the local VM broker. We reply on bridges
>> between network of brokers to move messages between brokers.
>>
>> I attached two files to show this memory leak problem. TryJmsClient keeps
>> sending persistent messages to a Topic. TryJmsManager has a message
>> consumer. Start TryJmsManager first and then start TryJmsClient. After
>> running about 10 seconds, TryJmsClient stops sending because of getting
>> "SystemUsage memory limit reached" error. About 24K messages are sent and
>> consumer shows it get all messages. Now examine ActiveMQ MemoryUsage
>> printout of TryJmsClient, MemoryUsage percentage stays at 100% or 99%
>> forever. Producer can never send any more messages.
>>
>> Note1: If I slow down sending by adding a sleep, I don't see memory leak
>> immediately. I am not sure for longer running time.
>> Note2: If I use Queue instead of Topic, there is no memory leak.
> 
> This is not a memory leak, it's directly related to the way that
> producer flow control works:
> 
> http://activemq.apache.org/producer-flow-control.html
> 
> Try disabling producer flow control in conf/activemq.xml to see if
> that takes care of the issue.
> 
> Bruce
> -- 
> perl -e 'print
> unpack("u30","D0G)U8V4\@4VYY9&5R\"F)R=6-E+G-N>61E<D\!G;6%I;\"YC;VT*"
> );'
> 
> Apache ActiveMQ - http://activemq.org/
> Apache Camel - http://activemq.org/camel/
> Apache ServiceMix - http://servicemix.org/
> 
> Blog: http://bruceblog.org/
> 
> 

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