Android Studio gradle error

Error:Unable to start the daemon process.
This problem might be caused by incorrect configuration of the daemon.
For example, an unrecognized jvm option is used.
Please refer to the user guide chapter on the daemon at http://gradle.org/docs/2.1/userguide/gradle_daemon.html
Please read below process output to find out more:
-----------------------
Error occurred during initialization of VM
Could not reserve enough space for object heap
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

How to fix this error:

You have to create this as an enviroment varibable:

Variable: _JAVA_OPTIONS

Value: -Xmx512M

under windows cmd

setx _JAVA_OPTIONS -Xmx512M

under linux terminal

export _JAVA_OPTIONS=-Xmx512M