RFR (S): 8227089: Add timing information for merging humongous remembered sets

Thomas Schatzl thomas.schatzl at oracle.com
Tue Jul 16 08:33:02 UTC 2019


Hi,

On Mon, 2019-07-15 at 14:16 -0700, sangheon.kim at oracle.com wrote:
> Hi Thomas,
> 
> On 7/10/19 8:40 AM, Thomas Schatzl wrote:
> > Hi all,
> > 
> >    can I have reviews for this change that adds timing information
> > for the part of the merge heap roots phase that dumps eager reclaim
> > candidates onto the card table?
> > 
> > I am aware that the eager reclaim phase is actually single threaded
> > - there is an extra CR for fixing this (JDK-8141637). At least with
> > recent change that effort is hidden by the other work in this
> > phase; but until now we did not know that there may be an issue.
> > 
> > CR:
> > https://bugs.openjdk.java.net/browse/JDK-8227089
> > Webrev:
> > http://cr.openjdk.java.net/~tschatzl/8227089/webrev
> 
> Looks good.

Thanks for your review.

Thomas




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