Android Performance and Monitoring - Meetup 3 25-14

1. Bay Area Android Meetup How to Achieve Mobile App Performance and Monitoring to Ensure Great User Experiences 6:30pm: Food & Drinks 7:00pm: Performance Monitoring – Alex Gaber 7:40pm: Test Automation and CI – Melvin Laguren

2. Bay Area Android Meetup How to Achieve Mobile App Performance and Monitoring to Ensure Great User Experiences Crittercism 3-25-2014

3. Agenda • Why Does Android Performance Matter? • Snappy UI for UX Performance • UI Thread vs. Worker Thread • Android OS Install Base Fragmentation • Mashed Up Mobile Apps – 3rd Party APIs • Mobile Ad SDK performance • Security SDKs performance • MBaaS performance • Testing vs. Monitoring for Performance • Implementing Android App Monitoring

4. How Users React to Poor App Performance Source: Crittercism end-user survey Q4’2013 26% 9% 10% 21% 26% 65% 0% 10% 20% 30% 40% 50% 60% 70% Did not do anything Shared the experience via social media Left a negative review on the app store Contacted support or told the vendor Told a friend in person Uninstalled the app What Do Users Do When the App is Slow?

5. Personal Experience – Uninstalled Android Apps Lots of apps in the Google Play Store…….. ..….. and lots of uninstalls, 1 stars, bugs? HELP !!!

7. Snappy UI Equals Great UX Linear Layout • Similar to nested tables in HTML • Great for quick and simple UI designs • Performance degrades as complexity increases Linear Layout

8. Snappy UI Equals Great UX Relative Layout • Eliminates Nested view groups • Keeps layout hierarchy flat • Much better performance for complex layouts

9. Relative Layout Example – activity_main.xml Relative Layout “button2” is below “button1”

11. ANR – Application Not Responding What causes an “Application Not Responding” (ANR) error? • No response to an input event (such as key press or screen touch events) within 5 seconds (5,000 ms) • A BroadcastReceiver hasn't finished executing within 10 seconds (10,000 ms) Main Threads vs Worker Threads

12. Main Thread (UI Thread) • Main Thread is also called the “UI Thread” • All Android activities operate in the Main Thread by default • You can easily overload the Main Thread – Doing network operations on Main Thread – Slow disk operations (un-optimized SQL)

13. Main Thread (UI Thread) TIPS • Worker Threads are “background threads” • Handle all network calls w/ Worker Threads • Decouple the UI Thread from potential blockers Sample Worker Thread

14. Main Thread (UI Thread) Set Thread Priority: Example

16. Android OS Install Base Fragmentation Over 20% of Android devices are still running an OS version below 4.0 Data collected during a 7-day period ending on March 3, 2014 (developer.android.com)

18. Average Mobile App Consumes Five 3rd Party APIs • The average mobile app is using between 5-6 APIs / web services • API Monitoring from web server to web server does not tell the full story

19. Average Mobile App Consumes Five 3rd Party APIs

21. 3rd Party SDK Overhead and Performance Latency • Mobile Ads SDKs

23. 3rd Party SDK Overhead and Performance Latency • Security SDKs

24. 3rd Party SDK Overhead and Performance Latency What is that SDK adding to your app? • What is the performance overhead for this service? • What if they start to lag or get slow? • How can I monitor that this SDK isn’t making my app have performance issues?

26. MBaaS Powering your Android App

28. Testing Does Not Ensure Performance: Trust But Verify • Agile Mobile App Development methodology – Leaves little time for testing

29. Testing Does Not Ensure Performance: Trust But Verify • Agile Mobile App Development methodology – Leaves little time for testing

31. Implementing Performance Monitoring for Android Failure of shopping cart check-outs, referrals, etc. Transaction Errors HTTP Errors like 404’s, Errors accessing Cloud Services API & Network Errors Slow performance, High latenciesUnresponsive Apps Downtime due to app crashes Apps Crashes & Exceptions Performance issues due to geographyLocation What cannot be tested prior to launch?

32. Implementing Performance Monitoring for Android DEMO

33. Testing Does Not Ensure Performance: Trust But Verify Thank You! www.crittercism.com @crittercism

Android Performance and Monitoring - Meetup 3 25-14

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