JetBrains IDE Custom VmOptions

linux-rubymine.vmoptions

# Configuration for Machine with 16G of RAM and Java 8

# Debug options
#-XX:+UnlockDiagnosticVMOptions
#-XX:+PrintFlagsFinal
#-XX:+PrintGCDateStamps -verbose:gc -XX:+PrintGCDetails -Xloggc:"<path to log>"
#-XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M

-da
-server
 
# Memory Usage
-Xms4g
-Xmx4g

-XX:MetaspaceSize=512m
-XX:MaxMetaspaceSize=512m
 
-XX:LargePageSizeInBytes=256m
-XX:ReservedCodeCacheSize=240m
-XX:SoftRefLRUPolicyMSPerMB=50
 
# GC
-XX:+DisableExplicitGC
-XX:+UseConcMarkSweepGC
-XX:ConcGCThreads=16
-XX:+ExplicitGCInvokesConcurrent

# GC - ConcMarkSweep Settings
-XX:CMSInitiatingOccupancyFraction=90
-XX:+CMSParallelRemarkEnabled 

# For current IDE we do not need to cleanup Perm, so for now ignore those settings
#-XX:+CMSClassUnloadingEnabled
#-XX:+ExplicitGCInvokesConcurrent
#-XX:+ExplicitGCInvokesConcurrentAndUnloadsClasses
 
-XX:+DoEscapeAnalysis
-XX:+UnlockExperimentalVMOptions
-XX:+UseCodeCacheFlushing
-XX:+UseCompressedOops
-XX:+AggressiveOpts
-XX:+HeapDumpOnOutOfMemoryError
-XX:+UseAdaptiveGCBoundary
-XX:CompileThreshold=10000 
-XX:+OptimizeStringConcat
-XX:+UseFastAccessorMethods  

# App Settings
-Dawt.useSystemAAFontSettings=lcd
-Djava.net.preferIPv4Stack=true
-Djsse.enableSNIExtension=false
-Dsun.io.useCanonCaches=false
-Dsun.net.inetaddr.ttl=1000 
 
# For JDK < 8
#-XX:PermSize=512m
#-XX:MaxPermSize=512m
#-XX:+UseSplitVerifier 
#-XX:+UseStringCache 

mbp-rubymine.vmoptions

# ~/Library/Preferences/RubyMine2017.1/rubymine.vmoptions
-da
-server
-Xms4g
-Xss32m
-XX:PermSize=512m
-XX:MaxPermSize=512m
-XX:MetaspaceSize=512m
-XX:MaxMetaspaceSize=512m
-XX:+DoEscapeAnalysis
-XX:+UnlockExperimentalVMOptions
-XX:LargePageSizeInBytes=256m
-XX:ReservedCodeCacheSize=240m
-XX:+UseCodeCacheFlushing
-XX:+UseCompressedOops
-XX:+UseConcMarkSweepGC
-XX:ParallelGCThreads=20
-XX:ConcGCThreads=5
-XX:+ExplicitGCInvokesConcurrent
-XX:+AggressiveOpts
-XX:+HeapDumpOnOutOfMemoryError
-XX:+CMSClassUnloadingEnabled
-XX:+CMSPermGenSweepingEnabled
-XX:CMSInitiatingOccupancyFraction=90
–XX:CMSIncrementalSafetyFactor=90
-XX:+CMSClassUnloadingEnabled
-XX:+CMSParallelRemarkEnabled
-XX:+UseAdaptiveGCBoundary
-XX:+UseSplitVerifier
-XX:CompileThreshold=10000
-XX:+UseCompressedStrings
-XX:+OptimizeStringConcat
-XX:+UseStringCache
-XX:+UseFastAccessorMethods
-XX:+UnlockDiagnosticVMOptions
-Xmx4096m
-Dide.no.platform.update=true

Change settings that reside in the following locations (depending on your operating system) :

• $HOME/.RubyMineXX/rubymine64.vmoptions
• /bin/rubymine64.vmoptions
• ~/Library/Preferences/RubyMine2017.1/rubymine.vmoptions