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Web Performance:
beyond load testing

      January 27, 2012

    Sergey Chernyshev
    Technical Director
    Web Systems & Applications
    truTV Web Services, Turner
NY Web Performance
1250+ members
4400+ worldwide
 since May 2009
Scalability & Performance
What is Web Performance?

 WPO improves the speed of web
  experience for each end user

 It is NOT how many users a web site can serve
                 (Scalability)

     It is NOT how often a web site is down
                  (Reliability)
Scalability & Performance
Why Web Performance?
Increasing revenue vs. cost optimization

• Shopzilla +7-12% conversions!               &

• +15% (+60M) downloads for Firefox.
  (-1 sec => +2.7% downloads)

• Slowness is sticky (Google and Microsoft)

• SEO: Google uses site's speed in ranking
Abandonment Rate




How Loading Time Affects Your Bottom Line. KISSmetrics
       http://blog.kissmetrics.com/loading-time/
Why Web Performance?
User experience
    "participants had to
    concentrate up to 50%
    more"
    "greater agitation and
    stress"
                                                          Web user connected to EEG

    "40% will go to a rival web
    site, 37% will abandon"
     Web Stress. A wake up call for European business. Foviance on behalf of CA 
http://www.ca.com/Files/SupportingPieces/final_webstress_survey_report_229296.pdf
Server Time vs. Browser Time
 88 requests, 6.344s   only 0.968s on backend = just 15%
Server Time vs. Browser Time
151 requests, 6.3s, only 0.1s on backend - less   then 2%
Page Statistics
                 2003                     2009

   Size:      93.7K                   507K
Objects:         25.7                    64.7
           Average Web Page Size Quintuples Since 2003
              Andrew King (websiteoptimization.com)
Average Web Page Size Quintuples Since 2003
   Andrew King (websiteoptimization.com)
Page Statistics
• Load Time: +0.533 s
• Time to first byte: +0.117 s
• Time to start render: +0.179 s
• Page Size: +48 KB
• Requests: +4
                                     just 1 year
• Connections: +1
                                               (2010)
• DNS Lookups: +1

 Are pages getting faster? Patrick Meenan (webpagetest.org)
Tools: Analysis
• Yahoo's YSlow (best practices)

• Google Page Speed (best practices)

• WebPageTest (web based waterfalls and more)

• dynaTrace AJAX Edition

• REDbot (HTTP caching)

• DOM Monster (DOM analysis)

• *HAR format (HTTP data format)
Tools: Monitoring
• ShowSlow (basic metrics and best practices)

• WebPageTest + ShowSlow ("geo" testing)

• Boomerang, Newrelic (RUM)

• Catchpoint

• Keynote, Gomez
Tools: Optimization
Dev tools          WPO automation

• SVN-Assets
      • mod_pagespeed

• JSMin, Closure   • Yottaa
  Compiler
                   • Strangeloop
• CSSLint
                   • Torbit
• SpriteMe,
  imgmin,          • Google Page Speed
  JPEGmini           service
Add
Web Performance
 to your SLAs!
Q&A


 URL: http://meetup.com/Web-Performance-NY/
Email: sergey.chernyshev@turner.com

     @SergeyChe

     @PerfPlanet

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Web performance: beyond load testing

  • 1. Web Performance: beyond load testing January 27, 2012 Sergey Chernyshev Technical Director Web Systems & Applications truTV Web Services, Turner
  • 2. NY Web Performance 1250+ members 4400+ worldwide since May 2009
  • 4. What is Web Performance? WPO improves the speed of web experience for each end user It is NOT how many users a web site can serve (Scalability) It is NOT how often a web site is down (Reliability)
  • 6. Why Web Performance? Increasing revenue vs. cost optimization • Shopzilla +7-12% conversions! & • +15% (+60M) downloads for Firefox. (-1 sec => +2.7% downloads) • Slowness is sticky (Google and Microsoft) • SEO: Google uses site's speed in ranking
  • 7. Abandonment Rate How Loading Time Affects Your Bottom Line. KISSmetrics http://blog.kissmetrics.com/loading-time/
  • 8. Why Web Performance? User experience "participants had to concentrate up to 50% more" "greater agitation and stress" Web user connected to EEG "40% will go to a rival web site, 37% will abandon" Web Stress. A wake up call for European business. Foviance on behalf of CA http://www.ca.com/Files/SupportingPieces/final_webstress_survey_report_229296.pdf
  • 9. Server Time vs. Browser Time 88 requests, 6.344s only 0.968s on backend = just 15%
  • 10. Server Time vs. Browser Time 151 requests, 6.3s, only 0.1s on backend - less then 2%
  • 11. Page Statistics 2003 2009 Size: 93.7K 507K Objects: 25.7 64.7 Average Web Page Size Quintuples Since 2003 Andrew King (websiteoptimization.com)
  • 12. Average Web Page Size Quintuples Since 2003 Andrew King (websiteoptimization.com)
  • 13. Page Statistics • Load Time: +0.533 s • Time to first byte: +0.117 s • Time to start render: +0.179 s • Page Size: +48 KB • Requests: +4 just 1 year • Connections: +1 (2010) • DNS Lookups: +1 Are pages getting faster? Patrick Meenan (webpagetest.org)
  • 14. Tools: Analysis • Yahoo's YSlow (best practices) • Google Page Speed (best practices) • WebPageTest (web based waterfalls and more) • dynaTrace AJAX Edition • REDbot (HTTP caching) • DOM Monster (DOM analysis) • *HAR format (HTTP data format)
  • 15. Tools: Monitoring • ShowSlow (basic metrics and best practices) • WebPageTest + ShowSlow ("geo" testing) • Boomerang, Newrelic (RUM) • Catchpoint • Keynote, Gomez
  • 16. Tools: Optimization Dev tools WPO automation • SVN-Assets • mod_pagespeed • JSMin, Closure • Yottaa Compiler • Strangeloop • CSSLint • Torbit • SpriteMe, imgmin, • Google Page Speed JPEGmini service
  • 18. Q&A URL: http://meetup.com/Web-Performance-NY/ Email: sergey.chernyshev@turner.com @SergeyChe @PerfPlanet