[jdk17u-dev] RFR: 8293503: gc/metaspace/TestMetaspacePerfCounters.java#Epsilon-64 failed assertGreaterThanOrEqual: expected MMM >= NNN [v2]

[SendaoYan]

On Mon, 13 May 2024 09:39:53 GMT, SendaoYan <syan at openjdk.org> wrote:

>> Hi,
>>  Backport of JDK-[8293503](https://bugs.openjdk.org/browse/JDK-8293503), to fix the [intermittent failure](https://github.com/openjdk-bots/jdk17u-dev/actions/runs/8841821807/job/24280514750) of TestMetaspacePerfCounters.java.
>>   This PR add a proper barrier inbetween two measurements. Only change the testcase, the change has been verify on below binary:
>> 
>> - [x] linux x64 release
>> - [x] linux x64 fastdebug
>> - [x] linux x86 release
>> - [x] linux x86 fastdebug
>
> SendaoYan has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:
> 
>  - Merge branch 'openjdk:master' into jbs8293503
>  - Backport 04d7b7d5747d887e12797df8ca3f7608d73d41ff

Wait until https://github.com/openjdk/jdk17u-dev/pull/2438 has been merged.

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PR Comment: https://git.openjdk.org/jdk17u-dev/pull/2431#issuecomment-2158283458