1. Windows Phone: Optimizing Application Performance
12/6/2018 4:06 AM
WPH303
Windows Phone: Optimizing Application Performance
Maarten Struys
Windows Phone Evangelist
Alten PTS
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. Agenda Introduction Identifying Performance Issues
TechEd 2012
12/6/2018 4:06 AM
Agenda
Introduction
Identifying Performance Issues
Obvious Performance Improvement Lessons
Reducing Startup Time and Memory Footprint
Understand UI Elements and Data Binding
Advanced Performance Improvement Lessons
Using Separate Assemblies
Using inline Code
Summary
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

3. Introduction The Importance of Performance
TechEd 2012
12/6/2018 4:06 AM
Introduction The Importance of Performance
Windows Phones are Powerful
Modern, fast GPU / CPU combination
Be aware of power consumption in combination with functionality
Performance is influenced by
Code executing on the UI Thread
Graphic features used inside applications
Data binding / storage strategies
Less is More!
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

4. Introduction Performance Aware Software Development
TechEd 2012
12/6/2018 4:06 AM
Introduction Performance Aware Software Development
Balance performance with other requirements
Turn performance into a functional requirement
Identify and evaluate performance issues
Maximum allowed (acceptable) execution time/resource usage
Test early and frequently
Use common scenarios
Test on (multiple) device(s)
Watch out for regression
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

5. Introduction Important Assumptions
TechEd 2012
12/6/2018 4:06 AM
Introduction Important Assumptions
Emulator performance ≠ device performance
Test on both 512 and 256 MB versions
Test on real device(s)
Test realistic scenarios
Use Mobile Network for data connections
Use release builds of your application
Run detached from the debugger
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

6. Introduction Performance influenced by
TechEd 2012
12/6/2018 4:06 AM
Introduction Performance influenced by
Application startup time
XAML parsing
Initialization code
Threading Model
Graphics Stack
Frame rate
Animation
Media
UI Model
Layout
Virtualization
Data binding
Scrolling
Data connections
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

7. Identifying Performance Issues Use ‘Cool’ UI Elements with care
TechEd 2012
12/6/2018 4:06 AM
Identifying Performance Issues Use ‘Cool’ UI Elements with care
When are items loaded?
Panorama versus Pivot
ListBox
StackPanel versus Virtualizing StackPanel
Images
Dynamic size versus hard coded
Showing progress
ProgressBar vs PerformanceProgressBar vs ProgressIndicator
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

8. Identifying Performance Issues Using common sense
TechEd 2012
12/6/2018 4:06 AM
Identifying Performance Issues Using common sense
Don’t execute hidden animations
Hiding UI elements through Opacity or Visibility
Using images or XAML
Use the ‘right’ type of Map (full Bing Map Control or static Map created with REST API’s)
Programming Language / Class Library Features
String versus StringBuilder
Be aware of memory leaks (anonymous event handlers)
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

9. Measuring Performance An iterative action, execute frequently
TechEd 2012
12/6/2018 4:06 AM
Measuring Performance An iterative action, execute frequently
Understand the startup behavior of your application
Know your application’s memory footprint
Will it run on 256 MB devices?
Monitor screen updates while executing the application
Test on real devices regularly
Device Emulator will find performance behavior trends
Your application might run fine on the emulator but sluggish on a real device
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

10. Measuring Performance Using performance counters
TechEd 2012
12/6/2018 4:06 AM
Measuring Performance Using performance counters
The easiest way to measure performance
Performance Counters are already there
Visible when attached to the debugger
Add Peter Torr’s MemoryDiagnosticsHelper
Indication of used memory
Counter
Ideal Minimum
Best Experience
Render Thread
30 fps
60 fps
UI Thread
15 fps
> 15 fps
Screen fill rate
2.0
<= 1.0
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

11. Improving Application Startup Time
12/6/2018 4:06 AM
demo
Improving Application Startup Time
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

12. Target the latest device types Benefit from Fast Application Switching
TechEd 2012
12/6/2018 4:06 AM
Target the latest device types Benefit from Fast Application Switching
Better user experience
Switching between applications often transparent for end users
Enabled for Windows Phone 7.5 (including 256 MB Devices)
Recompile, test, and resubmit your existing WP7 applications
OnNavigatedFrom/Deactivated
Save page/application state
OnNavigatedTo/Activated
Restore page/application state if tombstoned only
Detach / Attach resources manually, especially on 256 MB Devices
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

13. Memory usage and Performance Understanding Garbage Collections
TechEd 2012
12/6/2018 4:06 AM
Memory usage and Performance Understanding Garbage Collections
Garbage Collector helps to prevent common errors
Can’t use memory you already freed
Will free memory you don’t use anymore
Garbage Collections influence your application performance
Memory Allocations trigger Garbage Collections
Long living objects result in increasing memory usage
Can worst case lead to OOM Exceptions
Holding on to references unintentionally can result in memory leaks
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

14. TechEd 2012
12/6/2018 4:06 AM
Using the Performance Analysis Tools Measuring and interpreting results
Multiple Profiling options with the same tool
Code Execution Profiler
Memory Profiler
Memory usage is an important performance influencer
Visual Feedback about possible bottlenecks
Use the tools frequently to understand graphs and reports
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

15. Identifying bottlenecks with Performance Analysis Tools
12/6/2018 4:06 AM
demo
Identifying bottlenecks with Performance Analysis Tools
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

16. Graphics Performance Threads that matter
TechEd 2012
12/6/2018 4:06 AM
Graphics Performance Threads that matter
Data binding, Rasterizing, Events, Very busy! UI
Animations for bitmap cached elements
Compositor
Touch responsiveness thread
Touch
Application logic, long-running tasks, etc.
Background
Operating system compositing and overlays OS
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

17. TechEd 2012
12/6/2018 4:06 AM
Background Processing Be nice to the UI Thread, your users will love you for it
Long lasting operations will influence performance unless
Running on separate threads
Use BackgroundWorker or ThreadPool
Use Asynchronous Methods (and be ready for the next version of Windows Phone)
Almost as easy as synchronous methods without blocking the hosting thread
Application complexity increases (slightly)
Better end user experience
Be also aware of battery consumption
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

18. Executing code asynchronously
12/6/2018 4:06 AM
demo
Executing code asynchronously
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

19. TechEd 2012
12/6/2018 4:06 AM
Optimizing Even Further Trade off between maintainability and execution speed
Startup time can decrease with small assemblies that are only loaded when they are needed
Remove ‘redundant’ XAML
Make use of inline code
Worth investigating for frequently code
Use the code execution profiling to identify frequently called methods
Take advantage of GC behavior
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

20. Summary and Call to Action
TechEd 2012
12/6/2018 4:06 AM
Summary and Call to Action
Performance is crucial, especially on devices
Know what is going on under the hood of your application
Don’t execute code on the device … … unless it is absolutely necessary
Visit to get the tools and to register as Windows Phone Developer
Don’t wait for the next version of Windows Phone but start developing applications today!
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

21. Resources Learning TechNet http://europe.msteched.com
Connect. Share. Discuss.
Microsoft Certification & Training Resources
TechNet
Resources for IT Professionals
Resources for Developers

22. Submit your evals online
12/6/2018 4:06 AM
Evaluations
Submit your evals online
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

23. 12/6/2018 4:06 AM
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.
© 2009 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

24. 12/6/2018 4:06 AM
© 2009 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.