RFR (XS): 8201487: Do not rebalance reference processing queues if not doing parallel reference processing

[Thomas Schatzl]

Hi Sangheon, Kim,

On Thu, 2018-04-12 at 14:58 -0700, sangheon.kim wrote:
> Hi Thomas,
> 
> On 04/12/2018 01:03 PM, Thomas Schatzl wrote:
> > Hi all,
> > 
> >    can I have reviews for this small change that removes discovered
> > list
> > rebalancing for better work distribution across threads if running
> > serially.
> > 
> > This can save hundreds of ms in reference processing time.
> > 
> > CR:
> > https://bugs.openjdk.java.net/browse/JDK-8201487
> > Webrev:
> > http://cr.openjdk.java.net/~tschatzl/8201487/webrev/
> 
> Looks good.

  thanks for your reviews.

Thomas