RFR: 8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
bengt.rutisson at oracle.com
Fri Apr 8 11:16:31 UTC 2016
On 2016-04-08 13:10, Stefan Johansson wrote:
> Please review this enhancement to avoid spawning tasks when there is
> no work to do:
> During post_evacuate_collection_set the call to preserve_cm_referents
> ensures that no referents discovered by the concurrent reference
> processor are lost. This is done unconditionally and sometimes a lot
> of tasks are spawned just to find that there is no work to be done.
> This enhancement avoids the unnecessary work by first checking that
> the cm-ref-processor has at least some discovered reference to take
> care of.
> * JPRT
> * RBT with
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