abcs of webpagetest ( wpt )
TRANSCRIPT
ABCs of Webpagetest
( WPT )By Oliver Tse
January 10, 2016
What’s Webpage
test?
2008Patrick Meenan ( and AOL )
give us Webpagetest
Performance through visual progression
Today, it’s not about analysis
Specifically, it’s about how to use WPT
By the end of this talk, you’llPerform authenticated analysis
Compare performance with any page
Create initial, repeat and subsequent views
We’re not going to run through features
Like...
Play with it. Learn.Today, we talk about the
esoteric.
DemoFacebook 1
Facebook 1
You need scripting
You only need to remember a few commands
setCookie and navigateThat’s it!
And...files are tab delimited
Cookie authentication is key
DemoFacebook 2
Facebook 2
“Filmstrip View” is importantYou do most of your analysis
here
Anatomy of “Filmstrip View”1.Filmstrip
2.Asset waterfall
3.CPU - “Browser Main Thread”
4.Visual progress
5.Bar charts
Filmstrip
Asset Waterfall
CPU - “Browser Main Thread”
Visual progress
Timings
requests
Weight
This is a single run. What value is a single run?
The value is in page comparisons
Key concepts1.Each run is unique
2.URL parameter passing
3.Scripting
A typical test1.Run number
2.Initial view
3.Repeat view
4.“Steps”
5.Custom label
Compare tests. Comma separate IDs.
DemoInitial Repeat View
Comparison
Oz Initial
Oz Repeat
Neptune Initial
Neptune Repeat
Facebook Initial
Facebook Repeat
DemoSubsequent Views
Subsequent Views
Subsequent Views
“Be aware…”Runs/tests are always stored on the server
Always make your tests private
Always check “Script includes sensitive data”
Always invalidate your cookie session ( logoff )
Thank You!
ResourcesScripting
Webpagetest
Test Result Definitions
SpeedIndex Definition