Adoptium 11.0.24 getting high CPU Usage with wildfly 14.0.1 final apps

[arsiamallahbinhaq]

Please provide a brief summary of the bug

We experienced issue when replace Java 11.0.5 JDK with Adoptium OpenJDK 11.0.24 for our apps that based on Wildfly 14.0.1 final
every day it's getting 100% CPU usage (one time per day, i.e 02.00 A.M until 05.00 A.M). So the apps will be down and can't be accessed by user.

Did you test with the latest update version?

• Yes

Please provide steps to reproduce where possible

No response

Expected Results

CPU usage normal not until 100%

Actual Results

CPU usage hit 100%

What Java Version are you using?

11.0.24

What is your operating system and platform?

Windows Server 2016

How did you install Java?

No response

Did it work before?

No response

Did you test with other Java versions?

No response

Relevant log output

No response

[karianna]

@arsiamallahbinhaq Given it's a very specific time (0200-0500) - this is almost certainly an issue with your application code. You should run an execution profiler (Java has Java Flight Recorder built in which will likely be good enough) during that time period to see what code path is causing this.

[arsiamallahbinhaq]

The timing is not always at 02.00-05.00 AM, vary start from 01.00 until 06.00
We tried to downgrade the openJDK to 11.0.17, the CPU usage is normal. Can you give advice compatibility version for Adoptium 11.0.24 related with Wildfly version?

[karianna]

Recommend you attach a CPU profiler (async-profiler is a good one, or just use JFR that's built into the JVM) and see what is using the CPU during that time.

[karianna]

11.0.24 should be compatible, you can also try 11.0.25