How to increasing heap size of Eclipse Windows & Mac

Windows


Go eclipse installed package using file explorer,
Open Eclipse.ini file.
Modify following detail.

Minsize:  -Xms24m
Maxsize: -Xmx125m

increase min & max size according to your pc configuration.

Mac OS



Go Right click on eclipse icon -> seletct show package contains -> package using file explorer,


Open contains/macOS/Eclipse.ini file.

Modify following detail.


Minsize:  -Xms24m
Maxsize: -Xmx125m
-startup
../../../plugins/org.eclipse.equinox.launcher_1.0.200.v20090520.jar
--launcher.library
../../../plugins/org.eclipse.equinox.launcher.cocoa.macosx_1.0.0.v20090519
-product
org.eclipse.epp.package.java.product
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
-vmargs
-Dosgi.requiredJavaVersion=1.5
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts
-XX:MaxPermSize=256m
-Xms21m  //change min size
-Xmx64m  // change max size
-Xdock:icon=../Resources/Eclipse.icns
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts