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From Fuzzo <mcucc...@gmail.com>
Subject Re: Limited heap size and poor performances
Date Tue, 08 Jul 2008 14:32:50 GMT

Self-reply: the ActiveMQ distibution seems does not specify -server parameter
in the Java Service Wrapper configuration file...
Now the heap is about 60MB :)
I hope the problem is solved!



Fuzzo wrote:
> 
> Hi all!
> In my application I need use AMQ for messaging but there is a problem.
> 
> This is the color legend for loggc viewer:
> - red: heap size
> - green: gc time
> - blue: heap used
> - black: fullgc time
> 
> Normally, the activity is ok and the loggc is like this:
> <br> http://www.nabble.com/file/p18337977/amq_normal_gc.png <br>
> 
> But sometimes my application slow down packet processing, and loggc looks
> like that:
> <br> http://www.nabble.com/file/p18337977/amq_not_normal_gc.png <br>
> 
> And the topic size explodes:
> <br> http://www.nabble.com/file/p18337977/topic_size.png <br>
> 
> My app is in cluster for HA, not for LB and every element process packets
> separately.
> 
> 
> ActiveMQ is running as a service, via Java Service Wrapper with 128MB of
> max heap size but from the graph seems that AMQ wont ask for more memory
> when it reach ONLY 22MB :(
> Why this? Why AMQ calls so frequently the garbage collector slowling down
> all?
> 
> 
> JSW configuration file:
> <br> http://www.nabble.com/file/p18337977/activemq.conf activemq.conf <br>
> 
> AMQ configuration file:<br>
>  http://www.nabble.com/file/p18337977/activemq.xml activemq.xml <br>
> <br>
> Please tell me how i can avoid this, i'm going crazy!
> Many thanks!
> 
> 

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