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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><o:p> </o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>OpenJDK 17 Early Access build 18 is now available at
<a href="https://jdk.java.net/17">https://jdk.java.net/17</a></b><o:p></o:p></p>
<ul type="disc">
<li class="MsoListParagraph" style="mso-list:l0 level1 lfo1"><span style="mso-fareast-language:EN-US">These early-access , open-source builds are provided under the</span><o:p></o:p></li><ul type="circle">
<li class="MsoListParagraph" style="mso-list:l0 level2 lfo1"><span style="mso-fareast-language:EN-US"><a href="https://openjdk.java.net/legal/gplv2+ce.html">GNU General Public License, version 2, with the Classpath Exception</a></span><o:p></o:p></li></ul>
<li class="MsoListParagraph" style="mso-list:l0 level1 lfo1"><span style="mso-fareast-language:EN-US">Release Notes are available at
<a href="https://jdk.java.net/17/release-notes"><span style="color:windowtext">https://jdk.java.net/17/release-notes</span></a></span><o:p></o:p></li></ul>
<p><br>
<b>G1 pauses may be extremely long with EA build JDK-17+18<br>
<br>
</b>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]<o:p></o:p></p>
<p><o:p> </o:p></p>
<p><b>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.</b><o:p></o:p></p>
<p class="MsoNormal">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.
<br>
<br>
If you are running any kind of 2D / Swing/ AWT UI application on macOS, and see any rendering related problems<br>
starting with JDK 17 b19, please do report them to us along with a test case and screen shots.
<br>
<br>
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.<br>
<br>
<br>
Regards<o:p></o:p></p>
<p class="MsoNormal">Deepak<br>
<br>
[1] <a href="https://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2021-April/034745.html">
https://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2021-April/034745.html</a><br>
[2] <a href="https://openjdk.java.net/jeps/382">https://openjdk.java.net/jeps/382</a><br>
<br>
<o:p></o:p></p>
<pre><o:p> </o:p></pre>
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