Presented at PressNomics 2012

1. Ensuring WordPress Performance:
Why Speed Matters
Darin Swanson
New Relic
@NewRelic
@darinrs
Tuesday, November 13, 2012

2. Market Research
• This page takes forever to load
• How long is forever?
• About 10 seconds
Tuesday, November 13, 2012

3. Why Does Speed Matter?
• 0.1 second
• 1 second
• 10 seconds
Tuesday, November 13, 2012

4. Why Does Speed Matter?
Tuesday, November 13, 2012

5. Speed Matters: Users are
Impatient
N4J6D
http://bit.ly/Y
Tuesday, November 13, 2012

6. Speed Matters: Time is Money
N4J6D
http://bit.ly/Y
Tuesday, November 13, 2012

7. Why Does Speed Matter?
$86, 000, 000, 000
uDoY
http://b itly.com/PU
Tuesday, November 13, 2012

8. What do you need to know?
• Is your site satisfying your users?
• The data from real people visiting real
web sites..your web sites
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9. Tuesday, November 13, 2012

10. Slow Database Queries
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11. Tuesday, November 13, 2012

12. Tuesday, November 13, 2012

13. Tuesday, November 13, 2012

14. Slowest SQL Query
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15. Trace detail breakdown
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16. 404: Why slow?
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17. Best Practice
• Know how your database performance
is impacting your response time
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18. External Services
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19. INSERT GRAPHIC
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20. Tuesday, November 13, 2012

21. Tuesday, November 13, 2012

22. Tuesday, November 13, 2012

23. Best Practice
• Do you know all of the HTTP calls being
made?
• Do you know how long they take?
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24. Traffic
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25. Tuesday, November 13, 2012

26. Tuesday, November 13, 2012

27. Tuesday, November 13, 2012

28. Best Practice
• Know how your system is responding to
the load
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29. Caching
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30. INSERT GRAPHIC
cmV1g
http://bitly.com/H
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31. INSERT GRAPHIC
Tuesday, November 13, 2012

32. Best Practices
• Take the time to craft a caching
strategy
• Ability to handle more load with less
resources
• Less resources, less money
Tuesday, November 13, 2012

33. Real User Monitoring
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34. What should you be
looking for?
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35. RUM Details
Network
Dom Processing
Page Rendering
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36. 8 Seconds
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http ://bitly.com/
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37. wUvf
http://bitly.com/J0
Tuesday, November 13, 2012

38. Best Practices
• Know where the time is spent loading in the browser
• Find ways to give your users 1/2 second
Tuesday, November 13, 2012

39. Best Practices
• Measure
• Investigate
• Target
• Repeat
Tuesday, November 13, 2012

40. Ensuring WordPress Performance:
Why Speed Matters
Darin Swanson
New Relic
@NewRelic
@darinrs
Thanks!
Tuesday, November 13, 2012