I have Dell Venue 3830 and I plan to change its runtime from Dalvik to ART. It has Android KitKat 4.4.2. I have 12 gigs of apps.

I want to try ART so I want to know how much time it takes to switch Android runtime?

  • You cannot see the execution speed difference between DALVIK and ART runtimes normally... It simply justified within the architecture if ART that i precompiles the byte code into machine code so later on the application need less time to start because the compilation time is saved... only executable native files are loaded in the memory... Thus saving the battery to much extent and also avoids overheating. Commented Nov 21, 2015 at 12:32

2 Answers 2


This is hard to predict, mostly because not all apps work the same. I remember switching my Galaxy Tab 2 to ART took about 15-30 minutes with 183 apps installed.

How long this process takes largely depends on how many apps are installed and how fast the processor is. Most likely your device does not need to work through 12GB of data: it only needs to work the executable portion of the apps, not the stored images or cache.

I would say switching to ART would take up to 20-30 minutes depending on how many apps you have installed.


If you only have a few applications installed and a reasonably quick CPU then it could be a lot quicker than 20 minutes. I did the switch once and I remember it took about ten minutes but there were only few apps besides the stock apps installed on my device.

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