Merge pull request #1492 from kaeawc/kaeawc/build-tuning

Build tuning

gradle.properties

@@ -8,7 +8,23 @@
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
 # Ensure important default jvmargs aren't overwritten. See https://github.com/gradle/gradle/issues/19750
-org.gradle.jvmargs=-Xmx6g -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 -XX:+UseParallelGC -XX:MaxMetaspaceSize=1g
+#
+# For more information about how Gradle memory options were chosen:
+# - Metaspace See https://www.jasonpearson.dev/metaspace-in-jvm-builds/
+# - SoftRefLRUPolicyMSPerMB would default to 1000 which with a 4gb heap translates to ~51 minutes.
+#   A value of 1 means ~4 seconds before SoftRefs can be collected, which means its realistic to
+#   collect them as needed during a build that should take seconds to minutes.
+# - CodeCache normally defaults to a very small size. Increasing it from platform defaults of 32-48m
+#   because of how many classes can be loaded into memory and then cached as native compiled code
+#   for a small speed boost.
+org.gradle.jvmargs=-Dfile.encoding=UTF-8 -XX:+UseG1GC -XX:SoftRefLRUPolicyMSPerMB=1 -XX:ReservedCodeCacheSize=256m -XX:+HeapDumpOnOutOfMemoryError -Xmx4g -Xms4g
+
+# For more information about how Kotlin Daemon memory options were chosen:
+# - Kotlin JVM args only inherit Xmx, ReservedCodeCache, and MaxMetaspace. Since we are specifying
+#   other args we need to specify all of them here.
+# - We're using the Kotlin Gradle Plugin's default value for ReservedCodeCacheSize, if we do not then
+#   the Gradle JVM arg value for ReservedCodeCacheSize will be used.
+kotlin.daemon.jvmargs=-Dfile.encoding=UTF-8 -XX:+UseG1GC -XX:SoftRefLRUPolicyMSPerMB=1 -XX:ReservedCodeCacheSize=320m -XX:+HeapDumpOnOutOfMemoryError -Xmx4g -Xms4g
 
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit