RFR: 8159979: During initial mark, preparing all regions for marking may take a significant amount of time [v2]

[Thomas Schatzl]

On Mon, 30 Aug 2021 15:18:49 GMT, Ivan Walulya <iwalulya at openjdk.org> wrote:

>> Hi all,
>> 
>> Please review this change to move the work done during preparation for a concurrent mark start (pre_concurrent_start) into a G1BatchedGangTask.
>> 
>> Testing: Tier 1-3
>
> Ivan Walulya has updated the pull request incrementally with one additional commit since the last revision:
> 
>   typo

The new log messages should be added to TestGCLogMessages.java.

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Changes requested by tschatzl (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/5302