RFR: 8209894: ZGC: Cap number of GC workers based on heap size

Thomas Schatzl thomas.schatzl at oracle.com
Fri Aug 24 13:02:40 UTC 2018


Hi,

On Fri, 2018-08-24 at 14:36 +0200, Per Liden wrote:
> Hi,
> 
> Thanks for reviewing Erik. However, I reworked this a little bit. 
> Instead of using HeapSizePerGCThread, which has no real correlation
> with the overhead per worker thread, I'm using a cap based on the
> percent of the max heap size that we allow the reserve to occupied.
> The end result is similar, i.e. we use a low number of threads on
> tiny heaps.
> 
> http://cr.openjdk.java.net/~pliden/8209894/webrev.1

  looks good to me.

Thomas




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