RFR [XS] : 8229182: runtime/containers/docker/TestMemoryAwareness.java test fails on SLES12

[Baesken, Matthias]

Hello, please review the following small change .

The docker test  TestMemoryAwareness.java  failed on our ppc64le  SLES12 Linux machine .
It could  not successfully   trigger the expected  OOM ,  error message is :

java.lang.RuntimeException: Expected to get exit value of [1]

at jdk.test.lib.process.OutputAnalyzer.shouldHaveExitValue(OutputAnalyzer.java:396)
at TestMemoryAwareness.testOOM(TestMemoryAwareness.java:106)
at TestMemoryAwareness.main(TestMemoryAwareness.java:63)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:834)


After some discussion with Bob Vandette how to make the test more robust ,

we  looked into additionally  setting   -memory-swappiness   to   0  to  disable anonymous page swapping.



https://docs.docker.com/config/containers/resource_constraints/#--memory-swappiness-details


The test passes with this added setting.


Bug/webrev :

https://bugs.openjdk.java.net/browse/JDK-8229182

http://cr.openjdk.java.net/~mbaesken/webrevs/8229182.0/

Thanks, Matthias