RFR: 8267311: vmTestbase/gc/gctests/StringInternGC/StringInternGC.java fails when JTREG_JOBS > 25

[Jie Fu]

On Tue, 18 May 2021 09:42:31 GMT, Jie Fu <jiefu at openjdk.org> wrote:

> Hi all,
> 
> vmTestbase/gc/gctests/StringInternGC/StringInternGC.java fails with release VM on our many-core machines due to `-XX:MaxRAMPercentage=0`.
> This is because `-XX:MaxRAMPercentage=0` will be 0 if JTREG_JOBS > 25 [1].
> 
> Reproduce:
>  - make test TEST="vmTestbase/gc/gctests/StringInternGC/StringInternGC.java" JTREG="JOBS=26" CONF=server-release
> 
> `-Xmx1g` is added to make it more robust.
> Note: we still see failure with `-Xmx512m`.
> 
> Thanks.
> Best regards,
> Jie
> 
> [1] https://github.com/openjdk/jdk/blob/master/make/RunTests.gmk#L741

> Maybe, your -timeout is 1 not 4.

Please note that the default timeout factor is 4 [1] when running with `make test`.
Thanks.

[1] https://github.com/openjdk/jdk/blob/master/make/RunTests.gmk#L741

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PR: https://git.openjdk.java.net/jdk/pull/4086