PDF Presentation - Uplinq

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Resource Usage: JPEG/PNG vs BMP • PNG and JPG require performance costly decoding • Non-transparent (opaque) images may be converted to bitmaps – Increase the size of the bar file, but will lower load time • BMP (left), vs. PNG (right) format quality comparison bmp file: 232KBytes png file: 46KBytes • Use PNG if you would like to use the transparency feature A is transparent to B A is opaque to B 28
Resource Usage: Use PNG Crush • Encoding PNGs without “rowfilters” faster decodes – Cost is a large PNG file – Negative implications for EFS and RAM usage – Leads to an overall decrease in system performance • Recommended pngcrush options – pngcrush -f 0 to minimize RAM and EFS usage – pngcrush -rem tEXt to remove unneeded text added by authoring tools – pngcrush -rem gAMA -rem cHRM -rem iCCP -rem sRGB • To remove chunks for gamma and color correction tables • Use the pngcrush –brute for broad spectrum optimizations 29
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 and 16: 15 BMP Architectural Overview
Page 17 and 18: Leverage the Functionality Provided
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: Resource Usage: Preloading and Reus
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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