Re: RFR: 8323640: [TESTBUG]testMemoryFailCount in jdk/internal/platform/docker/TestDockerMemoryMetrics.java always fail because OOM killed

[sendaoYan]

On Mon, 22 Jan 2024 09:31:43 GMT, sendaoYan <d...@openjdk.org> wrote:

> 8323640: [TESTBUG]testMemoryFailCount in 
> jdk/internal/platform/docker/TestDockerMemoryMetrics.java always fail because 
> OOM killed

The test case before this PR has a maximum heap of 64MB and applies for 8M of 
memory each time in the for loop. When applying for memory for the sixth time, 
it was killed by the docker container because of OOM, 
jdk.internal.platform.Metrics.systemMetrics().getMemoryFailCount( ) interface 
has no chance to return 1, and the Java process returns exit code 137. The 
maximum heap is also 64M, The PR is changed to 1KB each time to ensure that the 
getMemoryFailCount() interface has a chance to return 1 and the test case has a 
chance to exit the for loop of memory allocation.

## test result before this PR:

![image](https://github.com/openjdk/jdk/assets/24123821/4554dd00-6da5-4529-907a-45e2df5c902b)


## test result after this PR:

![image](https://github.com/openjdk/jdk/assets/24123821/32ea4fc8-aa04-425e-8481-a920265d2b1f)

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PR Comment: https://git.openjdk.org/jdk/pull/17514#issuecomment-1903589872