Hello Rory,
No issues were observed against our Ant testsuite on a Linux setup with
JDK 17 build 17-ea+18-1490.
https://ci-builds.apache.org/job/Ant/job/Ant%20Master%20(latest%20EA%20JDK)/71/jdk_axis=jdk17_ea,label_exp=ubuntu/
-Jaikiran
On 20/04/21 3:21 pm, Rory O'Donnell wrote:
*Hi Stefan/Jaikiran, *
*OpenJDK 17 Early Access build 18****is now available at
**https://jdk.java.net/17 <https://jdk.java.net/17>*
* These early-access , open-source builds are provided under the
o GNU General Public License, version 2, with the Classpath
Exception <https://openjdk.java.net/legal/gplv2+ce.html>
* Release Notes are available at http://jdk.java.net/17/release-notes
<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.
Rgds,Rory
[1]
https://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2021-April/034745.html
[2] https://openjdk.java.net/jeps/382
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