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Broadening the user perspective – from network latency to user experience timings presentation
This document discusses broadening perspectives on web performance monitoring beyond just network latency. It recommends measuring the actual user experience by tracking metrics like time to first paint, time to interactive page, and total user experience time. These metrics provide insights into how long it takes for a user to start seeing content and to fully interact with a page. The document suggests that average time to first paint is over 1 second currently. It also describes how browser APIs and services can measure these user experience metrics for websites.
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Broadening the user perspective – from network latency to user experience timings presentation
- 1. Broadening Our Perspective onWeb Performance From Network Latency to User Experience Timings Vik Chaudhary @keynotesystems
- 2. The state ofweb performance today
- 3. …is that Operationsteams rely on clean-room measurements
- 4. Using geographically distributedmeasurement agents
- 5. …managed by commercialmeasurement companies and free services
- 6. …using reliable networkconnections on the Internet backbone and at last mile locations
- 7. …to run synthetic(“active”) tests on web pages from multiple locations
- 8. …and measure responsetime and availability for a page or transaction
- 9. It’s time tostep up our game
- 10.
- 11. …are broadening theirperspective on web performance monitoring
- 12. …and measuring theuser experience, not just the network latency 2,500 msec 3 secs
- 13. The questions beingasked today…
- 14. …are not: “Whatis the network latency of all resources on a page?”
- 15. Instead “When doesthe user actually see something other than a blank browser?”
- 16. June 26, 2012 “Howlong until the page loads above the fold on a user’s browser?”
- 17. “How long beforeusers can click a link, scroll the bar, or swipe the page?”
- 18. “What is theelapsed time for a page, including browser execution time?”
- 19. User Experience Metrics Time Time Time to User to First to Full Interactive Experience Paint Screen Page Time
- 20. How do websitesacross industries rate?
- 21. Time to Time to User Experience First Paint Interactive Page Time Retail Social Networks News 0 1s 2s 3s 4s 5s
- 22. Time to Time to User Experience First Paint Interactive Page Time Travel Gaming Social Retail Entertainment 0 1s 2s 3s 4s 5s
- 23. Time to FirstPaint is over 1s on average
- 24.
- 25. No, that’s toolong
- 26. That’s 4 blinksof your eye
- 27. How do youmeasure user experience for your website?
- 28. Your browser istalking to you
- 29. …in a languagecalled Web Timings
- 30. Web (Navigation) TimingAttributes
- 31. You could programit on your website… function onLoad() { var now = new Date().getTime(); var perceived_latency = now - performance.timing.navigationStart; }
- 32. Call Four DifferentAPIs… Navigation Performance Timing API Timeline API Resource User Timing API Timing API
- 33. …handle storage, compliance,and reporting
- 34. Or, let Googlegive you real user performance statistics
- 35. Keynote delivers theindustry’s first clean-room user experience monitoring data
- 37. Combining Clean Room and Real User Measurements
- 38.