The document discusses the definition of 'fast' websites, emphasizing loading times of 2 to 4 seconds across different industries. It presents comparative data on page load times, javascript execution, content sizes, and resource numbers for retail, media, and travel sectors, noting significant variations. The conclusion highlights that travel websites tend to be the fastest, with common performance traits observed among them.

1. What it means to be fast in
your industry
@AloisReitbauer

2. General definition of fast

3. Websites should
load in 2 to 4
seconds

4. 4

5. vs.
5

6. Is delivering pages
at Google speed
realistic?

7. Does performance
depend on the
industry?

8. First Impression Time
1.6
US Retail 1.0 3.8
1.4
US Media 1.0 7.3
1.5
US Travel 1.1 5.3
8

9. First Impression Times is
about 1.5 seconds
across industries for the top 50
9

10. Total Page Load Time
5.6
US Retail 4.3 15.4
7.3
US Media 4.4 23.0
4.8
US Travel 3.5 11.4
10

11. Total Load Times show a
big difference
11

12. Where does it come
from?

13. JavaScript Execution Time
2.1
US Retail 1.3 6.3
2.4
US Media 1.1 10.4
1.6
US Travel 0.5 5.2
13

14. Media Sites are
JavaScript heavy

15. Content Size
626 kB
US Retail 350 kB 1.6 MB
861 kB
US Media 330 kB 3.8 MB
405 kB
US Travel 240 kB 2.1 MB
15

16. Top pages are less
than 350 kB

17. Number of Resources
92
US Retail 68 238
114
US Media 64 278
74
US Travel 59 160
17

18. Most pages need
more than 60
resources

19. Content Transfer Time
3.3
US Retail 1.8 9.5
4.7
US Media 2.5 19.8
3.2
US Travel 1.7 10.6
19

20. Page Lifecycle Time Loss
1.4 3.7
US Retail 4.1
1.4 4.8
US Media 7.3
1.5 3.9
US Travel 4.8
First Impression
OnLoad Event
Fully Loaded
20

21. Let’s look at the
differences within
industries

22. US Media Site
Comparison

23. 23

24. 24

25. Comparison by Numbers
msn.com cbsnews.com
First Impression 0.9 1.7
Total Load 3.4 15.6
JavaScript 2.2 8.9
Content Size 238 1906
Transfer Time 3.0 8.0
Requests 77 213
Server Time 2.6 25.1
25

26. The User Perspective
26

27. US Retail Site
Comparison

28. 28

29. 29

30. Comparison by Numbers
overstock.com barnesandnoble.com
First Impression (1.3 sec) 0.6 1.7
Total Load (5.0 sec) 4.0 14.3
JavaScript (2.1 sec) 1.0 10.1
Content Size (639.4 kB) 268.7 1.273
Transfer Time (3.2 sec) 2.4 4.7
Requests (64) 52 238
Server Time (2.3 sec) 3.3 2.8
30

31. The User Perspective
31

32. US Travel Site
Comparison

33. 33

34. 34

35. Comparison by Numbers
tripmama.com priceline.com
First Impression 0.4 0.9
Total Load 1.6 4.9
JavaScript 0.4 1.8
Content Size 245 211.9
Transfer Time 1.8 1.5
Requests 59 114
Server Time 0.4 3.2
35

36. The User Perspective

37. 37

38. Industry specific KPI
Monitoring

39. Competitive Performance
Analytics

40. Detailed Performance
Data
40

41. Conclusion

42. Travel Sites
are the fastest

43. Super fast pages
share the same
characteristics

44. Big differences
within sites of an
industry

45. Alois Reitbauer
@Alois Reitbauer
alois.reitbauer@compuware.com
http://blog.dynatrace.com
45

46. 46
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