Anwar Ghuloum introduces ART and the team behind it.

• Anwar Ghuloum introduces the talk on ART, L's runtime that replaces Dalvik.
• Brian Carlstrom and Ian Rogers, his colleagues, will discuss different aspects of the runtime.
• The talk aims to provide a better understanding of what ART is and the improvements it brings.

Exploring the reasons for developing ART to replace Dalvik.

• Dalvik was designed for single-core processors with limited performance, flash, and RAM.
• As hardware evolved with multi-core processors and increased performance, Dalvik's limitations became apparent.
• ART was created to scale with modern processors and applications, offering ahead-of-time compilation and better garbage collection.

Brian Carlstrom details performance improvements and compilation process in ART.

• ART aims for fast start-up times without warm-up of a JIT, smooth operation even during garbage collection, and scalability.
• ART utilizes a flexible compiler infrastructure allowing for various optimization levels and ABI support.
• Ahead-of-time compilation in ART optimizes entire programs, resulting in faster method calls, reduced overhead, and efficient memory management.

Ian Rogers discusses the advancements in garbage collection within ART.

• ART focuses on fast allocation, less junk, and a smooth experience through enhanced garbage collection.
• ART avoids long pauses during garbage collection, aiming to reduce dropped frames and improve the user experience.
• The stickiness of the garbage collector and memory allocator optimizations in ART lead to significant performance improvements.

Anwar Ghuloum talks about 64-bit support and performance gains in ART.

• 64-bit support in ART is a major feature of L, providing better performance for compute-intensive workloads.
• ART's 64-bit support includes new instructions for media and cryptography, benefiting the entire platform.
• Existing 32-bit apps are compatible with 64-bit devices without needing updates, covering 85% of apps in the Play Store.