If you have JMX enabled, just attach JConsole and look at the Memory tab; it's easier than enabling GC logging for this basic use-case, and doesn't require a broker restart. If you do find lots of full GCs, then it might be worth turning on GC logging to figure out why, but it's overkill for figuring out if it's happening in the first place. On Dec 30, 2014 2:26 PM, "Kevin Burton" <bur...@spinn3r.com> wrote:
> I suspect this is full GC. Enable GC logging. You might already have a > gc.log and I’d take a look at that. If you tail -F the file and you’re > seeing constant “Full GC” back to back at like 1 second apart you’re in a > GC storm and you need to increase your memory. > > I *suspect* there’s a memory leak somewhere. If I stop all my clients > ActiveMQ never recovers. Either that or all the clients are using up > resources and the broker can’t release them since it spends all its time > doing full GCs. > > I’m not sure this is the case for you though but I suspect it is… > > On Tue, Dec 30, 2014 at 12:52 AM, ryan segura <ryan332...@hotmail.com> > wrote: > > > For reasons that I cannot figure out the ActiveMQ broker will spike its > CPU > > to 90-100% and stay there. I can kill the broker and restart the process > > (consumers will then reconnect) and it works fine again with low CPU > > utilization (0-1%). > > > > How can I troubleshoot this? There are hundreds of consumers and > thousands > > of topics. I wish there was some easy way for me to know what consumer > or > > topic or queue is hogging all of the CPU. How do people troubleshoot > these > > problems? As it is right now I feel very blind to this process. > > > > Any guidance or assistance is appreciated. Thank you. > > > > > > > > -- > > View this message in context: > > > http://activemq.2283324.n4.nabble.com/ActiveMQ-5-10-CPU-spikes-to-90-100-and-stays-there-after-a-period-of-time-tp4689332.html > > Sent from the ActiveMQ - User mailing list archive at Nabble.com. > > > > > > -- > > Founder/CEO Spinn3r.com > Location: *San Francisco, CA* > blog: http://burtonator.wordpress.com > … or check out my Google+ profile > <https://plus.google.com/102718274791889610666/posts> > <http://spinn3r.com> >
