RFR: 8267246: -XX:MaxRAMPercentage=0 is unreasonable for jtreg tests on many-core machines [v2]

[Jie Fu]

On Tue, 18 May 2021 07:54:52 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Jie Fu has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Use awk to compute MaxRAMPercentage
>
> I ran `tier1` and `tier2` on my 3970X, which usually runs with `-XX:MaxRAMPercentage=0` due to having 32 cores, and the tests completed fine. It now runs with `-XX:MaxRAMPercentage=0.78125`.

Thanks @shipilev and @erikj79 for your review.

I'll push it tomorrow since JDK-8267293 and JDK-8267311 are easier to be reproduced with the original code.
Thanks.

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PR: https://git.openjdk.java.net/jdk/pull/4062