Device side performance Optimization of Mobile Apps- Impetus Webinar

Device Side Performance Optimization of Mobile Apps
July 8, 2011
Recorded version available at
http://www.impetus.com/webinar_registration?event=archived&eid=44

Agenda
Device side performance challenges for mobile applications
Why performance analysis?
Performance analysis approach
Planning performance analysis of mobile apps
Optimization techniques for better performance
Real-world examples

Device-side Performance Challenges for Mobile Applications
Diversity in handsets
Difference in the screen size
Variations in battery life and memory
3G Option/ Wi-Fi Capabilities
Touch, Multi-touch
Different types of processors and hardware
Device features, such as GPS, Camera, etc.
Application development methodology

Importance of Performance Analysis
Faster Time to Market
Saves Battery Life
Limited Code Change
Application Stability

Performance Factors

Options for Performance Analysis
Using extensive debugging tools
Traceview & Eclipse memory analyzer & DDMS for Android
J2ME profiler for Java phones
JDE memory analyzer for BlackBerry
Instruments for iPhone
Usage of small stubs
Automated scripts

Performance Analysis Approach

Optimization Techniques
UI independent layouts and design
Addresses challenges created by diversity in handsets, difference in device screen sizes & Touch/Multi-touch feature
Developing no-porting/less-porting build to reduce binary size
Proper usage of MVC framework
Address ‘Application Development Methodology’ issues
Endorses platform independent design for applications

Optimized communication
Resolves issues caused by 3G and Device Wi-Fi capabilities
Connect to server using push-based notifications
Implementing objects and data caching mechanisms
Using scaled-down protocols and minimum functionalities
Auto selection of most preferred mode
Design considerations of available network options

Memory management with the help of weak references
Helps application development methodology
Using weak reference to manage device memory
Lazy loading of resources
Addresses problem created by diverse processors and hardware
Enhanced turn around time
Worker thread implementation
Business Logic operations can be implemented on worker thread

Real-world Experience
The Client
A leading financial services provider
Key Challenges
Application not usable after some time
Application screens are taking time to load
Extra usage of memory in certain events
Impetus Solution
Wrote small stubs in the application to identify performance bottlenecks
Reinvent the image processing algorithm to reduce CPU cycles
Usage of multi threaded approach
Analyze memory usage and resolve memory leaks from the system
Benefits Realised
Tremendous increase in application’s performance and life
Enhanced application consumes lesser memory vis- a-visprev version

Real-world Experience
The Client
A leading Media broadcast service provider company
Key Challenges
Playing smooth audio-video together without interruption
Various network protocol usage
Enhance battery life so as to play video for 3-4
Impetus Solution
Customized data source implementation
Implemented RTSP, RTP, RTCP protocols with device threading support
Event queue to process media streams
Benefits Realised
Enhanced battery life
Audio/Video synchronization maintained and better quality delivered

Driven by..
Impetus Mobile Maturity Model

To Summarize..
Application should not adversely affect device CPU and memory
Performance analysis to be based on CPU, memory, service, debug and process info parameters
Small stubs can be used to identify problem area of your app
Optimization techniques can be incorporated where required
Right designed application will always get desired performance

Impetus Technologies
We offer innovative product engineering
and technology R&D services

Questions
Please send in your questions using the chat panel

Thank you
Mail us at inquiry@impetus.com
or visit www.impetus.com

Device side performance Optimization of Mobile Apps- Impetus Webinar

by Impetus Technologies on Jul 12, 2011

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Device side performance Optimization of Mobile Apps- Impetus Webinar Presentation Transcript