Android Studio VM Options

VM Options

# custom Android Studio VM options, see https://developer.android.com/studio/intro/studio-config.html

# Initial stack memory size, affects idea start speed
-Xms4G

# Maximum heap memory size that Android Studio can use, reduces the garbage collection frequency.
-Xmx8G

# Initial Permanent generation 
-XX:PermSize=2048M

# Maximum Permanent generation 
-XX:MaxPermSize=4096M

# Maximum compiller buffer when JIT java compiler compling
-XX:ReservedCodeCacheSize=2048M

thanks for share, working in intellij community 2020.2

credits: https://gist.github.com/P7h/4388881#gistcomment-3600538

my custom IntelliJ 2021.1 IDEA VM options

-server
-XX:MetaspaceSize=128M
-XX:MaxMetaspaceSize=512m
-XX:+AlwaysPreTouch
-Xms128m
-Xmx1512m
-XX:ReservedCodeCacheSize=512m
-XX:+UseG1GC
-XX:+UseStringDeduplication
-XX:AutoBoxCacheMax=20000
-ea
-Dsun.io.useCanonCaches=false
-Dsun.awt.keepWorkingSetOnMinimize=true
-Djava.net.preferIPv4Stack=true
-Djdk.http.auth.tunneling.disabledSchemes=""
-Djsse.enablesSNIExtension=false
-XX:+HeapDumpOnOutOfMemoryError
-XX:-OmitStackTraceInFastThrow
-Dfile.encoding=UTF-8
-Dhidpi=true
-Dsun.java2d.uiScale.enabled=false
-Dide.ui.scale=1.0