Find the best optimization vmoptions Intellij 2016 - intellij-idea

Question

I m using IntelliJ 2016, by default the vmoptions contains :
-server
-Xms128m
-Xmx512m
-XX:ReservedCodeCacheSize=240m
-XX:+UseConcMarkSweepGC
-XX:SoftRefLRUPolicyMSPerMB=50
-ea
-Dsun.io.useCanonCaches=false
-Djava.net.preferIPv4Stack=true
-XX:+HeapDumpOnOutOfMemoryError
-XX:-OmitStackTraceInFastThrow
I would like to customize IntelliJ to make it faster.
Here the properties for my system.
I m using : Java as language, Apache Camel as Framework
Is there an optimal configuration ?
Thxs

Answer 1

I use this contains;
I think you like use this.
-ea
-server
-Xms2G
-Xmx4096M
-Xss2m
-XX:MaxMetaspaceSize=2G
-XX:ReservedCodeCacheSize=1G
-XX:MetaspaceSize=512m
-XX:+UseConcMarkSweepGC
-XX:+DoEscapeAnalysis
-XX:SoftRefLRUPolicyMSPerMB=50
-XX:+UnlockExperimentalVMOptions
-Djava.net.preferIPv4Stack=true
-Dsun.io.useCanonCaches=false
-XX:LargePageSizeInBytes=256m
-XX:+UseCodeCacheFlushing
-XX:ParallelGCThreads=8
-XX:+DisableExplicitGC
-XX:+ExplicitGCInvokesConcurrent
-XX:+PrintGCDetails
-XX:+PrintFlagsFinal
-XX:+AggressiveOpts
-XX:+CMSClassUnloadingEnabled
-XX:CMSInitiatingOccupancyFraction=60
-XX:+CMSClassUnloadingEnabled
-XX:+CMSParallelRemarkEnabled
-XX:+UseAdaptiveGCBoundary
-XX:+UseSplitVerifier
-XX:CompileThreshold=10000
-XX:+OptimizeStringConcat
-XX:+UseStringCache
-XX:+UseFastAccessorMethods
-XX:+UnlockDiagnosticVMOptions
-XX:+HeapDumpOnOutOfMemoryError
-XX:+UseCompressedOops
-XX:-OmitStackTraceInFastThrow
-Dawt.useSystemAAFontSettings=lcd
-Dfile.encoding=UTF-8
-Xverify:none
-XX:ErrorFile=$USER_HOME/java_error_in_idea_%p.log
-XX:HeapDumpPath=$USER_HOME/java_error_in_idea.hprof
-Xbootclasspath/a:../lib/boot.jar

Answer 2

It depends on the size of your projects and the technologies/frameworks/languages they're using. The best solution to dealing with slowness is to report it: https://intellij-support.jetbrains.com/hc/en-us/articles/207241235-Reporting-performance-problems
That said, if you have a lot of free physical memory (and you likely do), you could increase the Xmx parameter to e.g. 2g, that might speed things up.

Answer 3

First,
If you have a 64 bits as OS, it s better to launch idea64.exe version.
idea64 (Version 2016) must run with a JDK 8 (64 bits)
SET IDEA_JDK_64 = ../path of jdk8
Edit idea64.exe.vmoptions "-Xmx1024m"