Parallel AlwaysPreTouch

[Alen Vrečko]

Hi, Thomas.

Thank you for the quick response. Hope to see this implemented soon.
It is a small code change that makes a noticeable difference in
startup time.

Let me know if you are open for code contribution.

Alen

V V ned., 1. dec. 2019 ob 22:06 je oseba Thomas Schatzl
<thomas.schatzl at oracle.com> napisala:
>
> 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
>