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

[Thomas Stuefe]

On Fri, 26 Apr 2024 09:19:21 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

Since this is not a clean backport, which part of it is not clean?

-------------

PR Comment: https://git.openjdk.org/jdk17u-dev/pull/2431#issuecomment-2079303122