RFR: 8269523: runtime/Safepoint/TestAbortOnVMOperationTimeout.java failed when expecting 'VM operation took too long' [v2]

[David Holmes]

> Please review this simple test adjustment:
>  - dropped 5ms timeout as we have seen execution as low as 2ms
>  - enabled GC logging
>  - report output in all cases to allow ease of analysis
> 
> Testing: ran 10x on macos/linux/Windows x64 and macos Aarch64 to check execution times and adjusted test accordingly
> 
> Thanks,
> David

David Holmes has updated the pull request incrementally with one additional commit since the last revision:

  Robustness suggestions from @shipilev

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4901/files
  - new: https://git.openjdk.java.net/jdk/pull/4901/files/7c1b32bc..26bd9307

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4901&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4901&range=00-01

  Stats: 6 lines in 1 file changed: 5 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4901.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4901/head:pull/4901

PR: https://git.openjdk.java.net/jdk/pull/4901