Google is working on a core Android change that could make future phones feel faster and smoother. The company has started using a feature called Automatic Feedback Directed Optimization, or AutoFDO, in the Android kernel. This is the core part of Android that manages how the system works with apps and hardware.
Google says the Android kernel uses about 40 percent of CPU time on a phone. That means even small improvements here can affect everyday use in noticeable ways. The company says this new method can help reduce cold app launch times by 4 percent and cut boot time by 1 percent.
AutoFDO is not a brand new idea. Google first introduced it in Android 12. Now the company is bringing it into the Android kernel in a bigger way. The technique uses real world usage data to understand which parts of the code are used most often.
To build those usage patterns, Google says it ran representative workloads in lab conditions. That included testing the 100 most popular apps. The goal is to identify the most active code paths and then optimize them so the system can handle common tasks more efficiently.
Google says its research found a geometric mean performance uplift of 10.5 percent. The company also says AutoFDO reaches about 85 percent of the gains offered by traditional feedback directed optimization while using sampled data. In simple terms, Google believes it can get most of the performance benefit without adding too much extra cost or complexity.
The company says these changes should lead to faster app switching, a more responsive interface, and better battery life over time. The current rollout targets the android16 6.12 and android15 6.6 kernel branches. Profiles were collected on Pixel devices running kernels 6.1, 6.6, and 6.12.
Google also plans to expand support to newer Generic Kernel Image versions and additional build targets in the future. For Android users, this means a behind the scenes improvement that may not sound dramatic on paper but could make phones feel quicker in daily use.
