That's a lot of threads. You might wanna turn off the dedicated task runner via either the activemq connection factory (in code) or via config ( http://activemq.apache.org/how-do-i-configure-10s-of-1000s-of-queues-in-a-single-broker-.html ).
A couple of questions from the thread dump analysis: 1. how many processors/cores do your machines have? 2. are your clients (producers/consumers) local to the broker on the same machine but different process? 3. looking at the oracle-ds settings in config, is the same machine also hosting oracle? 4. what nic does the machine have? On Mon, Aug 27, 2012 at 12:38 AM, Tlholoe, Peter <ptlho...@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.sha...@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" <ptlho...@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 > > To read FirstRand Bank's Disclaimer for this email click on the > following address or copy into your Internet browser: > > https://www.fnb.co.za/disclaimer.html > > > > If you are unable to access the Disclaimer, send a blank e-mail to > firstrandbankdisclai...@fnb.co.za and we will send you a copy of the > Disclaimer. > > <activemq.xml> > > To read FirstRand Bank's Disclaimer for this email click on the following > address or copy into your Internet browser: > https://www.fnb.co.za/disclaimer.html > > If you are unable to access the Disclaimer, send a blank e-mail to > firstrandbankdisclai...@fnb.co.za and we will send you a copy of the > Disclaimer. >
