Re: Something is killing my CPU

Thanks Dino, I have VisualVM up and running and a JMX connection to the OpenNMS box active.

Now what am I looking at/for?!  I have no real clue as to how to spot the culprit?

Gavin

From: Dino Yancey <[email protected]>
Sent: Monday, 08 October 2018 20:28
To: General OpenNMS Discussion <[email protected]>
Subject: Re: [opennms-discuss] Something is killing my CPU

I'd recommend watching the JVM with something like VisualVM ( https://visualvm.github.io/ ) to see which subsystem or thread is spinning out.  Probably easier to follow than a stack trace.

Dino

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On Mon, Oct 8, 2018 at 12:01 PM Gavin Hill <[email protected]<mailto:[email protected]>> wrote:
How do I identify which OpenNMS (22.0.4) process is consuming all of my CPU time?  I have a 4-core machine that runs fine after a restart but over time, CPU just grows until it maxes out.

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Any thoughts on how I identify what is doing this?  I look in htop and it shows it’s one of the OpenNMS Java threads, but I don’t know how to find out which.  Restarting OpenNMS every few days is not an option for me.

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Gavin Hill  |  Director
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