RFR: 8253476: TestUseContainerSupport.java fails on some Linux kernels w/o swap limit capabilities

[Bob Vandette]

On Tue, 29 Sep 2020 19:57:14 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Please review this small change to remove "--memory 200m" option from TestUseContainerSupport.java.  This can cause
>> test failures on systems where swap accounting is disabled.
>
> Marked as reviewed by coleenp (Reviewer).

Setting a 200MB container Limit when swap accounting is not enabled in the Kernel will cause a SEGV depending on how
much RAM is available in the host.  When we test with UseContainerSupport disabled and a container limit imposed by
docker, the VM assumes it has all host memory available to it.  The VM ergonomics will then assume it has a lot of
memory and will potentially select a very large heap.  When the heap is initialized, it will exceed the containers
limit causing the SEGV.

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PR: https://git.openjdk.java.net/jdk/pull/303