RFR (S): 8155230: Tune thread usage for mark bitmap clear
mikael.gerdin at oracle.com
Thu Apr 28 14:19:42 UTC 2016
On 2016-04-28 13:15, Thomas Schatzl wrote:
> Hi all,
> during testing of 8077144 I found that mark bitmap clearing can be
> significantly sped up by not using that many threads.
> A good conservative estimate (tends to use too many threads) that still
> cuts mark bitmap clear time by >50% is to give each thread at least 1
> MB of data to clear.
> jprt, webrev, various performance tests
> Depends on 8155232.
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