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Application Taking up CPU in StackWalker API Calls on Java SE 11 (Doc ID 2544372.1)

Last updated on MAY 02, 2021

Applies to:

Java SE JDK and JRE - Version 11 and later
Information in this document applies to any platform.


An application running with JDK 11.0.2 on Linux 6 is consuming CPU after a few hours of up time.  Performing a manual garbage collection brings the CPU usage down.

The application does not exhibit this anomaly with JDK 8, using the same Garbage Collector (ParallelOldGC) and Java options.

Capturing several jstacks show glimpses in some threads with the following thread stack, but these threads disappear very quickly making troubleshooting difficult to determine if the threads are the ones taking up CPU.


 Use of the StackWalker API was introduced in JDK 9.


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