[jdk17u-dev] RFR: 8281318: Improve jfr/event/allocation tests reliability

[Aleksey Shipilev]

On Fri, 11 Mar 2022 15:53:57 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to improve JFR tests on x86_32. Needs [JDK-8281638](https://bugs.openjdk.java.net/browse/JDK-8281638) as the follow-up.
> 
> Additional testing:
>  - [x] Linux x86_32 fastdebug, affected tests fail without the patch, pass with it

Got the push approval.

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PR: https://git.openjdk.java.net/jdk17u-dev/pull/240