RFR: 8340389: vmTestbase/gc/gctests/PhantomReference/phantom001/TestDescription.java Test exit code: 97 with -Xcomp UseAVX=3 [v2]

[Thomas Schatzl]

> Hi all,
> 
>   please review this fix to the phantom001 test to do much less garbage collections that inhibit passing the test.
> 
> Testing: gha, running the test with and without the change for 500 times with the problematic options - fails 379 times without the change, passes all runs with the change.
> 
> Thanks,
>    Thomas

Thomas Schatzl has updated the pull request incrementally with two additional commits since the last revision:

 - * more comment update
 - * fix comment

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/21538/files
  - new: https://git.openjdk.org/jdk/pull/21538/files/5327996b..2c707769

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21538&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21538&range=00-01

  Stats: 3 lines in 1 file changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/21538.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21538/head:pull/21538

PR: https://git.openjdk.org/jdk/pull/21538