IntelliJ IDEA and Eclipse performance booster which takes high priority by default and CPU affinity of 18. Put into your IDEA_HOME and ECLIPSE_HOME into the batch file and make a shortcut to it with the parameter of your workspace location accepted by the -data

eclipse-start.bat

@echo off 
@rem setting affinity to 18 - hex of 00111000b cpu 345
@rem CMD /C START "Eclipse Kepler 4.3 x64" /D "C:\TOOLS\ide\eclipse" /HIGH /AFFINITY 18 "C:\TOOLS\ide\eclipse\eclipse.exe"
@start "Eclipse Kepler 4.3 x64" /D "C:\jenv\candidates\eclipse\4.3-kepler" /high /b eclipse.exe -data %1

idea.exe.vmoptions

-server
-Xms300m
-Xmx750m
-XX:ReservedCodeCacheSize=250m
-ea
-Dsun.io.useCanonCaches=false
-Djava.net.preferIPv4Stack=true
-Djsse.enableSNIExtension=false
-XX:+UseConcMarkSweepGC
-XX:SoftRefLRUPolicyMSPerMB=50

idea.properties

# Use ${idea.home} macro to specify location relative to IDE installation home.
# Use ${xxx} where xxx is any Java property (including defined in previous lines of this file) to refer to its value.
# Note for Windows users: please make sure you're using forward slashes (e.g. c:/idea/system).
idea.home=C:/jenv/candidates/idea/14.0.2

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to IDE config folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
# idea.config.path=${user.home}/.IntelliJIdea/config
idea.config.path=${idea.home}/config

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to IDE system folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
# idea.system.path=${user.home}/.IntelliJIdea/system
idea.system.path=${idea.home}/system

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to user installed plugins folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
# idea.plugins.path=${idea.config.path}/plugins
idea.plugins.path=${idea.config.path}/plugins

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to IDE logs folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
# idea.log.path=${idea.system.path}/log
idea.log.path=${idea.system.path}/log

#---------------------------------------------------------------------
# Maximum file size (kilobytes) IDE should provide code assistance for.
# The larger file is the slower its editor works and higher overall system memory requirements are
# if code assistance is enabled. Remove this property or set to very large number if you need
# code assistance for any files available regardless their size.
#---------------------------------------------------------------------
idea.max.intellisense.filesize=3000

#---------------------------------------------------------------------
# This option controls console cyclic buffer: keeps the console output size not higher than the specified buffer size (Kb).
# Older lines are deleted. In order to disable cycle buffer use idea.cycle.buffer.size=disabled
#---------------------------------------------------------------------
idea.cycle.buffer.size=1024

#---------------------------------------------------------------------
# Configure if a special launcher should be used when running processes from within IDE.
# Using Launcher enables "soft exit" and "thread dump" features
#---------------------------------------------------------------------
idea.no.launcher=false

#---------------------------------------------------------------------
# To avoid too long classpath
#---------------------------------------------------------------------
idea.dynamic.classpath=false

#---------------------------------------------------------------------
# Uncomment this property to prevent IDE from throwing ProcessCanceledException when user activity
# detected. This option is only useful for plugin developers, while debugging PSI related activities
# performed in background error analysis thread.
# DO NOT UNCOMMENT THIS UNLESS YOU'RE DEBUGGING IDE ITSELF. Significant slowdowns and lockups will happen otherwise.
#---------------------------------------------------------------------
#idea.ProcessCanceledException=disabled

#---------------------------------------------------------------------
# There are two possible values of idea.popup.weight property: "heavy" and "medium".
# If you have WM configured as "Focus follows mouse with Auto Raise" then you have to
# set this property to "medium". It prevents problems with popup menus on some
# configurations.
#---------------------------------------------------------------------
idea.popup.weight=heavy

#---------------------------------------------------------------------
# Use default anti-aliasing in system, i.e. override value of "Settings|Editor|Appearance|Use anti-aliased font"
# option. May be useful when using Windows Remote Desktop Connection for instance.
#---------------------------------------------------------------------
idea.use.default.antialiasing.in.editor=false

#---------------------------------------------------------------------
# Disabling this property may lead to visual glitches like blinking and fail to repaint
# on certain display adapter cards.
#---------------------------------------------------------------------
# sun.java2d.noddraw=true
sun.java2d.noddraw=false

#---------------------------------------------------------------------
# Removing this property may lead to editor performance degradation under Windows.
#---------------------------------------------------------------------
# sun.java2d.d3d=false
sun.java2d.d3d=true
sun.java2d.xrender=true

#---------------------------------------------------------------------
# Workaround for slow scrolling in JDK6
#---------------------------------------------------------------------
swing.bufferPerWindow=false

#---------------------------------------------------------------------
# Removing this property may lead to editor performance degradation under X Window.
#---------------------------------------------------------------------
sun.java2d.pmoffscreen=false

#---------------------------------------------------------------------
# Workaround to avoid long hangs while accessing clipboard under Mac OS X.
#---------------------------------------------------------------------
#ide.mac.useNativeClipboard=True

#---------------------------------------------------------------------
# Maximum size (kilobytes) IDEA will load for showing past file contents -
# in Show Diff or when calculating Digest Diff
#---------------------------------------------------------------------
#idea.max.vcs.loaded.size.kb=20480

#---------------------------------------------------------------------
# IDEA can copy library .jar files to prevent their locking.
# By default this behavior is enabled on Windows and disabled on other platforms.
# Uncomment this property to override.
#---------------------------------------------------------------------
# idea.jars.nocopy=false
idea.jars.nocopy=false

#---------------------------------------------------------------------
# The VM option value to be used to start a JVM in debug mode.
# Some JREs define it in a different way (-XXdebug in Oracle VM)
#---------------------------------------------------------------------
idea.xdebug.key=-Xdebug

#---------------------------------------------------------------------
# Switch into JMX 1.0 compatibility mode.
# Uncomment this option to be able to run IDEA using J2SDK 1.5+ while working
# with application servers (like WebLogic) running 1.4.
#---------------------------------------------------------------------
#jmx.serial.form=1.0

#-----------------------------------------------------------------------
# Change to 'enabled' if you want to receive instant visual notifications
# about fatal errors that happen to an IDE or plugins installed.
#-----------------------------------------------------------------------
idea.fatal.error.notification=disabled

idea32.bat

@echo off
@start "IntelliJ IDEA" /d "C:\jenv\candidates\idea\14.0.2\bin\" /b /max /high idea.exe %1 %2 %3

idea64.bat

@echo off
@start "IntelliJ IDEA" /d "C:\jenv\candidates\idea\14.0.2\bin\" /b /max /high idea64.exe %1 %2 %3

idea64.exe.vmoptions

-Xms512m
-Xmx1500m
-XX:ReservedCodeCacheSize=350m
-ea
-Dsun.io.useCanonCaches=false
-Djava.net.preferIPv4Stack=true
-Djsse.enableSNIExtension=false
-XX:+UseConcMarkSweepGC
-XX:SoftRefLRUPolicyMSPerMB=50