Speed up Eclipse IDE

Go to Window > Preferences :

1. General > Startup and Shutdown : remove all plugins activated on startup
2. General > Editors > Text Editors > Spelling : Disable spell checking
3. General > Validation > Suspend all
4. Install/Update > Automatic Updates > Uncheck “Automatically find new updates and notify me”
5. General > Appearance > Uncheck Enable Animations

Locate eclipse.ini file in Eclipse installation folder ($ECLIPSE_HOME) and put the following :

-startup
plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.300.v20150602-1417
-product
org.eclipse.epp.package.java.product
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=1.7
-XX:+AggressiveOpts
-XX:PermSize=512m
-XX:MaxPermSize=512m
-Xms2048m
-Xmx2048m
-Xmn512m
-Xss2m
-XX:+UseParallelOldGC