Parallel AlwaysPreTouch

[Thomas Schatzl]

Hi,

On Sun, 2019-12-01 at 22:03 +0100, Alen Vrečko wrote:
> Hello, everyone.
> 
> Looking at the code. It looks like ZGC uses a single threaded
> PreTouch. Both the G1 and Shenandoah use a parallel PreTouch.
> 
> Any plans to make ZGC PreTouch parallel? Apologies if I missed
> something in the code. But I am seeing G1 do the pretouch much faster
> than ZGC for the same heap size.

  the change for this (https://bugs.openjdk.java.net/browse/JDK-8234543
) is currently in review.

Thanks,
  Thomas