update jvm for java21 (#186)

Signed-off-by: Thomas Kerber <[email protected]>

Author: ThokerWD

roles/linux/opensearch/templates/jvm.options

@@ -11,7 +11,8 @@
 ## -Xms4g
 ## -Xmx4g
 ##
-
+## See https://opensearch.org/docs/opensearch/install/important-settings/
+## for more information
 ##
 ################################################################
 
@@ -32,19 +33,19 @@
 ################################################################
 
 ## GC configuration
-8-13:-XX:+UseConcMarkSweepGC
-8-13:-XX:CMSInitiatingOccupancyFraction=75
-8-13:-XX:+UseCMSInitiatingOccupancyOnly
+8-10:-XX:+UseConcMarkSweepGC
+8-10:-XX:CMSInitiatingOccupancyFraction=75
+8-10:-XX:+UseCMSInitiatingOccupancyOnly
 
 ## G1GC Configuration
-# NOTE: G1 GC is only supported on JDK version 10 or later
-# to use G1GC, uncomment the next two lines and update the version on the
-# following three lines to your version of the JDK
-# 10-13:-XX:-UseConcMarkSweepGC
-# 10-13:-XX:-UseCMSInitiatingOccupancyOnly
-14-:-XX:+UseG1GC
-14-:-XX:G1ReservePercent=25
-14-:-XX:InitiatingHeapOccupancyPercent=30
+# NOTE: G1GC is the default GC for all JDKs 11 and newer
+11-:-XX:+UseG1GC
+# See https://github.com/elastic/elasticsearch/pull/46169 for the history
+# behind these settings, but the tl;dr is that default values can lead
+# to situations where heap usage grows enough to trigger a circuit breaker
+# before GC kicks in.
+11-:-XX:G1ReservePercent=25
+11-:-XX:InitiatingHeapOccupancyPercent=30
 
 ## JVM temporary directory
 -Djava.io.tmpdir=${OPENSEARCH_TMPDIR}
@@ -74,3 +75,14 @@
 
 # JDK 9+ GC logging
 9-:-Xlog:gc*,gc+age=trace,safepoint:file=logs/gc.log:utctime,pid,tags:filecount=32,filesize=64m
+
+# JDK 20+ Incubating Vector Module for SIMD optimizations;
+# disabling may reduce performance on vector optimized lucene
+20-:--add-modules=jdk.incubator.vector
+
+# See please https://bugs.openjdk.org/browse/JDK-8341127 (openjdk/jdk#21283)
+23:-XX:CompileCommand=dontinline,java/lang/invoke/MethodHandle.setAsTypeCache
+23:-XX:CompileCommand=dontinline,java/lang/invoke/MethodHandle.asTypeUncached
+
+21-:-javaagent:agent/opensearch-agent.jar
+21-:--add-opens=java.base/java.nio=org.apache.arrow.memory.core,ALL-UNNAMED