OpenJDK 17 Early Access build 18 is now available at https://jdk.java.net/17
* These early-access , open-source builds are provided under the
* GNU General Public License, version 2, with the Classpath
Exception<https://openjdk.java.net/legal/gplv2+ce.html>
* Release Notes are available at https://jdk.java.net/17/release-notes
G1 pauses may be extremely long with EA build JDK-17+18
During performance testing we noticed that due to a recent change (JDK-8262068)
GC pauses after a G1 full GC may be extremely slow. The problem has been fixed
with JDK-8264987 and that has already been integrated. This change will be
available with the following EA build JDK-17+19. For more technical info
please see [1]
JEP 382 [2] - Starting with build 19, JDK 17 for macOS is *temporarily*
switched from using OpenGL to using Apple's Metal API for Java 2D rendering.
Heads up to anyone who is testing JDK 17 for running apps on macOS. Starting
with build 19, JDK 17 for macOS is *temporarily* switched from using OpenGL to
using Apple's Metal API for Java 2D rendering.
If you are running any kind of 2D / Swing/ AWT UI application on macOS, and see
any rendering related problems
starting with JDK 17 b19, please do report them to us along with a test case
and screen shots.
You may also set "-Dsun.java2d.opengl=true" to re-enable OpenGL - which
implicitly disables Metal - to confirm that it is a Metal related rendering
glltch.
Regards
Deepak
[1]
https://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2021-April/034745.html
[2] https://openjdk.java.net/jeps/382
