I run a Java (21) application in my k8s cluster.
I defined the -Xms and -Xmx values to be 780 mib. If I set a lower value to -Xmx the application crashes with out of memory error.
I set the request and the limit of the container to be 600 mib.
I expected the app to be terminated with an out of memory error, but the container is running.
In addition, by using the kubectl top I see that the container is using 545 mib, and indeed when I set a lower limit the app is crashed with OOM.
How the -Xms and -Xmx are higher than the limit and the container is running?
I see that defining a lower -Xmx value leads to OOM, so I assume the JVM is actually using it, but when I set the limit to this value (lower than -Xmx) the container runs. How is it possible?
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