Speedup IntelliJ
I'm using intelliJ for Scala development and got 8 GB of new RAM last week, so I thought: time to use it. I checked my task manager and found intelliJ using ~250mb. From eclipse I knew that tweaking JVM options helped a lot in improving speed, so I googled ...
and found this one for OS X I couldn't find the JVM option immediately, so I started tweaking Xmx. At 1 GB, I realized it doesn't start any more. I checked the intelliJ java version, found it's outdated and 32bit.
So in order to use your current JDK and 64 bit you have to change your link to from:
IntelliJ IDEA Community Edition 10.0.2binidea.exe
to
IntelliJ IDEA Community Edition 10.0.2binidea.BAT
and adjust "Start in"
The bat looks for JDK_HOME and uses 64bit now.
My current VM Options , which are located in
...IntelliJ IDEA Community Edition 10.0.2binidea.exe.vmoptions
are
-Xms512m
-Xmx1024m
-XX:MaxPermSize=512m
-ea
-server
-XX:+DoEscapeAnalysis
-XX:+UseCompressedOops
-XX:+UnlockExperimentalVMOptions
-XX:+UseParallelGC
Instead of -XX:+UseParallelGC , you can use -XX:+UseConcMarkSweepGC , which is
the accepted choice for desktop apps, but I have changed to the throughput collector recently. because with a fast machine and a small enough heap, you have quick pauses, more throughput and no issues with fragmentation (ijuma. #scala)
Changes:
-XX:+UseConcMarkSweepGC //removed
// removed, because not needed with the lastest JVM.
-XX:+UnlockExperimentalVMOptions
-XX:+DoEscapeAnalysis
-XX:+UseCompressedOops
I'll stick to these options for now. I would really like to know your experience with it.
Which options work best for you? How do I hide this cmd window while running intelliJ through the .bat ? :)
By the way, here's another link for tuning intelliJ. Basically it says on p.20/21 to turn off windows restore and antivirus for system dirs.
Another way to speed up intelliJ is to put intellij system folder on ramdrive (thanks OlegYch|h).
from idea.properties
idea.system.path=${idea.home}/.IntelliJIdea/system
See Superuser for Win 7 64bit RAM Drive or this one. 1 GB seems fine for me.
Another hint a friend gave me is to exclude the project directories from your antivirus (scan on access)
There are similar posts regarding tuning Eclipse:
This combination works great on my Intellij13 running in Mavericks:
Updated Jul 18, 2017 :
# custom IntelliJ IDEA VM options
-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
-Dsun.java2d.renderer=sun.java2d.marlin.MarlinRenderingEngine
I keep this setting updated at https://github.com/adben/config/blob/master/idea64.vmoptions
对于我来说，切换到SSD驱动器可以提高性能（特别是对于大型项目）。
Regarding:
How do I hide this cmd window while running intelliJ through the .bat?
Use the 'start' command and javaw.exe together, so, if you have:
SET JAVA_EXE=%IDEA_JDK%jrebinjava.exe
...
"%JAVA_EXE%" %JVM_ARGS% -cp "%CLASS_PATH%" %IDEA_MAIN_CLASS_NAME% %*
change it to:
SET JAVA_EXE=%IDEA_JDK%jrebinjavaw.exe
...
start "Intellij IDEA" /b "%JAVA_EXE%" %JVM_ARGS% -cp "%CLASS_PATH%" %IDEA_MAIN_CLASS_NAME% %*
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