jmckenzie-dev commented on code in PR #3696:
URL: https://github.com/apache/cassandra/pull/3696#discussion_r1913770130
##########
build.xml:
##########
@@ -307,6 +307,72 @@
<equals arg1="${ant.java.version}" arg2="17"/>
</condition>
+ <resources id="_jvm21_arg_items">
+ <string>-Djdk.attach.allowAttachSelf=true</string>
+
+ <string>-XX:+UseZGC</string>
+ <string>-XX:+ZGenerational</string>
+
+ <!-- Temporary workaround for jamm having incorrect default
CompressedOops for JDK21 -->
+ <string>-XX:-UseCompressedOops</string>
+
+ <!-- Have jamm tell us what it sees for memory layout on start for
debugging purposes -->
+ <string>-Dorg.github.jamm.strategies.LogInfoAtStartup-true</string>
+
+ <!-- <string>-XX:+UseLargePages</string> -->
+ <!-- <string>-XX:+SoftMaxHeapSize=12G</string> --> <!-- Max size ZGC
will _attempt_ to stay below -->
+ <!-- Disable returning memory to the OS -->
+ <string>-XX:-ZUncommit</string>
+ <!-- <string>-XX:ZUncommitDelay=300</string> -->
+
+ <!-- Pay the tax up front to pretouch memory to smooth out latency
later -->
+ <string>-XX:+AlwaysPreTouch</string>
+
+ <!-- Need to explicitly allow security manager on JDK21; deprecated
for removal -->
+ <string>-Djava.security.manager=allow</string>
+
+ <string>--add-exports java.base/jdk.internal.misc=ALL-UNNAMED</string>
+ <string>--add-exports java.base/jdk.internal.ref=ALL-UNNAMED</string>
+ <string>--add-exports java.base/sun.nio.ch=ALL-UNNAMED</string>
+ <string>--add-exports
java.management.rmi/com.sun.jmx.remote.internal.rmi=ALL-UNNAMED</string>
+
+ <string>--add-exports java.rmi/sun.rmi.registry=ALL-UNNAMED</string>
+ <string>--add-exports java.rmi/sun.rmi.server=ALL-UNNAMED</string>
+ <string>--add-exports
java.rmi/sun.rmi.transport.tcp=ALL-UNNAMED</string>
+ <string>--add-exports java.sql/java.sql=ALL-UNNAMED</string>
+ <string>--add-exports java.base/java.lang.ref=ALL-UNNAMED</string>
+ <string>--add-exports java.base/java.lang.reflect=ALL-UNNAMED</string>
+ <string>--add-exports jdk.unsupported/sun.misc=ALL-UNNAMED</string>
+ <string>--add-exports
jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED</string>
+
+ <string>--add-opens java.base/java.lang.module=ALL-UNNAMED</string>
+ <string>--add-opens java.base/java.net=ALL-UNNAMED</string>
+ <string>--add-opens java.base/jdk.internal.loader=ALL-UNNAMED</string>
+ <string>--add-opens java.base/jdk.internal.ref=ALL-UNNAMED</string>
+ <string>--add-opens java.base/jdk.internal.reflect=ALL-UNNAMED</string>
+ <string>--add-opens java.base/jdk.internal.math=ALL-UNNAMED</string>
+ <string>--add-opens java.base/jdk.internal.module=ALL-UNNAMED</string>
+ <string>--add-opens
java.base/jdk.internal.util.jar=ALL-UNNAMED</string>
Review Comment:
I'll remove it and we'll see what happens. :)
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