RFR: 8264524: jdk/internal/platform/docker/TestDockerMemoryMetrics.java fails due to swapping not working [v2]

[Jie Fu]

On Tue, 6 Apr 2021 09:40:39 GMT, Severin Gehwolf <sgehwolf at openjdk.org> wrote:

> if (memAndSwapLimit <= memLimit)

Hi @jerboaa ,

Unfortunately, this check fails to work on a host machine which doesn't support swapping (e.g., total size of Swap is 0 byte).

You can still specify --memory and --memory-swap as you like on a host machine without swapping space.
And Metrics.systemMetrics().getMemoryLimit()/getMemoryAndSwapLimit() do return the values as you specified.
But the swapping will never happen since there is no swapping space on the host machine.

Thanks.

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PR: https://git.openjdk.java.net/jdk/pull/3286