Enable Android Studio's "Dex In Process" for Faster App Builds

By: Android Developers

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Uploaded on 05/12/2016

Android Studio 2.1 enables Dex In Process, a feature that can dramatically improve all your build times. To take advantage of Dex In Process, you’ll need to modify your gradle.properties file and increase the amount of memory allocated to the Gradle Daemon VM by 1 Gb, to a minimum of 2 Gb, using the org.gradle.jvmargs property.

Learn more here about how to enable Dex In Process here: https://goo.gl/s4KpFw

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Comments (2):

By anonymous    2017-09-20

Update from June 25, 2017

At Google IO 2017 there was some updates about this topic. It's not recommended anymore to set the flag on the dexOptions, so if you have something like the next, you can delete it.

dexOptions {
   javaMaxHeapSize "2g"

Original answer:

Android Studio 2.1 enables Dex In Process which shares the VM with Gradle to improve build times. Due to this, it's necessary to increase the size of the Gradle daemon to incorporate those Dex processes.

At least it's necessary 2 gigs of memory, but you can try with three if you can afford it.



By default the Java max heap size is one gig, but in case you have modified it on the build.gradle file...

build.gradle (App)

dexOptions {
   javaMaxHeapSize "2g"

...you have to resize the Gradle daemon size accordingly (has to be bigger to fit the heap).


  • Please realize above numbers varies from machine to machine.

Original Thread

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