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Device Platform Overview Brew MP provides an extensive set of APIs into features at all layers of the device, including: • OS Services • General, Multimedia and Modem Services • Application, Widget, Windowing and UI Services Brew MP is both modular and extensible. Many of the services are offered as demand-loaded, digitally signed binary modules. This serves to reduce static RAM overhead, bolster compatibility between devices and support flexible configurations. The platform supports both cooperative and pre-emptive threading. It also supports process-based memory protection which complements the already robust least-privileged execution model of the platform. Brew MP has been optimized to leverage chipset modem and multimedia services. These services are exposed through h immutable object-oriented APIs which support seamless access to hardware accelerated implementations when available. A key principal of Brew MP is platform extensibility. New features and APIs can be added without Qualcomm’s involvement. These features can be exposed through any supported language. Applications Application Environment General Services OS Services Kernel 3 rd Party Software Brew MP Software Chipset Software 3 rd Party Apps Graphics & Multimedia (HW Accelerated) Modem & Networking 16
Leverage the Functionality Provided by the BMP System • Components in the Brew MP System are optimized for – Power – Execution performance – Memory utilization stem✔Do IT! • Optimization of Brew MP System Components is chipset specific – Using these components will utilize the underlying hardware where possible ✔Please utilize Brew MP APIs where applicable 17
Page 1 and 2: Brew MP Performance Tips Rich Stew
Page 3 and 4: Agenda • Performance Concepts •
Page 5 and 6: General Performance • What is opt
Page 7 and 8: Throughput vs. Latency (cont.) •
Page 9 and 10: Trading Off CPU vs. Memory Utilizat
Page 11 and 12: Event Handling • A backlog in the
Page 13 and 14: Strings (cont.) • Don't call strl
Page 15: 15 BMP Architectural Overview
Page 19 and 20: Brew MP API Usage Considerations: S
Page 21 and 22: JPEG Decoding Optimization • 5Mp
Page 23 and 24: Resource Usage: Use Bitmap Fonts or
Page 25 and 26: Resource Usage: Avoid Blending in R
Page 27 and 28: Resource Usage: Preloading and Reus
Page 29 and 30: Resource Usage: Use PNG Crush • E
Page 31 and 32: 31 Memory Utilization Consideration
Page 33 and 34: Storage Optimization: Use a Smaller
Page 35 and 36: Memory Management Considerations
Page 37 and 38: Apply Brew MP Best Practices to Avo
Page 39 and 40: 39 Power Utilization Considerations
Page 41 and 42: Power Management—Minimize Number
Page 43 and 44: Principles of Code Optimizations Us
Page 45 and 46: CS Heap Tracker (CHT) • CHT is a
Page 47 and 48: Summary • Performance is comprise
Page 49 and 50: Resource Usage: Miscellaneous • I

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