Instrumenting Akka
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Ognen Duzlevski
May 27, 2015, 9:24:18 AM5/27/15
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Hello, I have an Actor system that implements a polling functionality (every x minutes an Actor is woken up and it creates a bunch of other actors that do something and then get "killed"). However, over a few days of running I get GC Out of Memory errors. What tools are out there to instrument what is going on and why I am running out of memory? I suppose one possibility is that some actors are queueing up messages and eventually the queue gets too large? How do I find out what is going on?
Thanks!
Adam
May 28, 2015, 2:08:32 AM5/28/15
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You can take 2 heap dumps a day or more apart and then use Eclipse MAT to compare them (there's a compare basket feature that is very useful in such cases).
Actually there's a good chance that even a single heap dump will suffice if the JVM has been running for long enough. Try to use the leak suspects report. It usually points to the right place.
Actually there's a good chance that even a single heap dump will suffice if the JVM has been running for long enough. Try to use the leak suspects report. It usually points to the right place.
Akka Team
May 29, 2015, 9:15:25 AM5/29/15
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I agree with Adam, heapdump and/or analyse the system with a jvm tool/profiler of your choice (visualvm, yourkit, jprofiler etc).
-- Konrad
On Thu, May 28, 2015 at 8:08 AM, Adam <adam...@gmail.com> wrote:
You can take 2 heap dumps a day or more apart and then use Eclipse MAT to compare them (there's a compare basket feature that is very useful in such cases).
Actually there's a good chance that even a single heap dump will suffice if the JVM has been running for long enough. Try to use the leak suspects report. It usually points to the right place.
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Ognen Duzlevski
May 29, 2015, 9:17:01 AM5/29/15
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Thank you both!
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