RFR (S/M): 8151069: Parallelize clearing the per-thread concurrent mark data structures
sangheon.kim at oracle.com
Wed Mar 9 00:36:36 UTC 2016
I have same request as Tom for adding some explanation.
And I have one more question.
You are using '_g1h->workers()' and '_parallel_workers' for
'clear_all_count_data()'. And their total workers will be
'ParallelGCThread' and 'ConcGCThread' as a default. So how about using
WorkGang::total_workers() instead of '_max_worker_id'?
2662 G1ClearCountDataTask cl(this, &_card_bm, &_region_bm,
On 03/04/2016 02:01 AM, Thomas Schatzl wrote:
> clearing the per-thread concurrent mark data structures single
> threaded is a really bad idea since it lenghtens the concurrent mark
> This change parallelizes this work. It is based on JDK-8077144.
> jprt, vm.gc testlist, some applications
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