Scalability vs. Performance

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Scalability vs. Performance

  1. 1. Size & Speed Scalability vs. PerformanceNY Web Performance Meetup March 27, 2013
  2. 2. About• Doing web dev and operations since 1996• Tech Director, Web Ops and Dev @ truTV/Turner• Creator of ShowSlow• Organizer at NY WebPerf• Board member of WPO Foundation
  3. 3. Why Do We Scale?
  4. 4. Available Resources CPU Memory Disk Network
  5. 5. CPU & Memory• Classical scale problem• Scale up (Moors law)• Scale out (cloud)
  6. 6. Storage• More available• Speed and reliability• Slower then in the past / SSD
  7. 7. Network ???• Easy to scale for static assets• Trouble if you hit dynamic
  8. 8. User Experience
  9. 9. How Page Loads~8 sec above the fold~0.5 sec for first requestonly 6.25% on back end12sec, 157 req, ~1Mbhttp://bit.ly/pageload-videohttp://bit.ly/pageload-filmstrip
  10. 10. Our Tools
  11. 11. Load Testing apply load, measure backendperformance degradation
  12. 12. "Synthetic" testingtime ALL components of page load HAR
  13. 13. Real User Measurementmeasure key performance metrics for REAL users Boomerang.js
  14. 14. Speed, is it important? RUM data. Aaron Kulick, Cliff Crocker @ Wallmart Labs
  15. 15. Speed, it is important! RUM data. Aaron Kulick, Cliff Crocker @ Wallmart Labs
  16. 16. Speed it upfor one user!
  17. 17. New York Web Performance MeetupSergey Chernyshev @sergeyche @perfplanet
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