Docker Java memory usage

Question

I have some issues understanding how a Docker Java container uses memory for the host machine. I gave the container JVM opt

"JAVA_OPTS=-XX:MaxMetaspaceSize=1024m -Xms=512m -Xmx=1024m -XX:PermSize=512m -XX:MaxPermSize=1024m "

But when I'm running Docker stats on the container I see that MEM USAGE is 1.6GB

Is docker allocating memory for the none of JVM parts of the container?

Do you usually limit the container memory limit?

victor sosa · Accepted Answer · 2016-04-26 13:57:31Z

1

That's all the memory of the docker container (OS + JVM) including the operating system. And yes you can put some limit to the memory check:

answered Apr 26, 2016 at 13:57

victor sosa

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