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From "Tlholoe, Peter" <PTlho...@fnb.co.za>
Subject RE: Sounds like ActiveMQ still hangs after memory increase
Date Mon, 27 Aug 2012 17:15:11 GMT
Hi Sharma
I will try that (turn off the dedicated task runner) and advise, please see below the answers
to the questions that you have asked.

1. how many processors/cores do your machines have?
	16 cores
2. are your clients (producers/consumers) local to the broker on the same machine but different
process?
	All our consumers are remote, different applications sitting in different departments (but
in the same DMZ). Some of our producers are local and some remote. We use these messages to
kick 
	Different business work flows in different fulfilment areas
3. looking at the oracle-ds settings in config, is the same machine also hosting oracle?
	The Oracle database is sitting in a different machine but in the same DMZ
4. what nic does the machine have?
	I will have to find this out from our infrastructure guys.

Regards,
P

On Mon, Aug 27, 2012 at 12:38 AM, Tlholoe, Peter <PTlholoe@fnb.co.za> wrote:

> Hi Gaurav,
> I did take thread dumps during hang, and after the fact. I have 
> attached
> 10 thread dump file. T1dump -t7dump are during the hang and t7dump to 
> t10dump are after the hang period.
>
> -----Original Message-----
> From: Gaurav Sharma [mailto:gaurav.cs.sharma@gmail.com]
> Sent: 27 August 2012 08:33 AM
> To: users@activemq.apache.org
> Cc: users@activemq.apache.org
> Subject: Re: Sounds like ActiveMQ still hangs after memory increase
>
> When the process hangs, please take a thread dump (kill -3) and 
> pastebin/gist and share so folks on here can help. Also, how did you 
> determine that it hangs - no log activity, jmx response, etc?
>
> By the way, 1-2gigs of heap is not very large these days not that you 
> should just up it but just fyi.
>
> On Aug 26, 2012, at 23:14, "Tlholoe, Peter" <PTlholoe@fnb.co.za> wrote:
>
> > Good Day,
> > We have increased the maximum heap size of the JVM started by 
> > ActiveMQ
> to 2048mb, and set the systemUsage memoryLimit to 1280 (70% of the 
> total max heap size). We have also set the per destination policy. For 
> topics
> (">") since they are heavily used we have set the memoryLimit to 512 
> and
> 128 mb for Queues (">"). And we have also disabled producer flow control.
> Can it be something else ?. We are using ActiveMQ 5.4.2
> >
> > I have attached our activemq.xml
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> > <activemq.xml>
>
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