The simplest testing principle

Before starting testing web-application make sure that network cable is connected.

The good tester

To the optimist, the glass is half full. To the pessimist, the glass is half empty. To the good tester, the glass is twice as big as it needs to be.

by eXtreme Software Testing site

Client-side performance testing of Web applications

Testing Goals:
- Improve Web-site performance

Measurements:
- Total Sequence Time (total time of page loading)
- Request Count (amount of requests while opening testing page)
- Page download Size

Tools Required:
- IE / FireFox
- Fiddler2

Test Flow:
- Prepare the test cases you would like to cover in Performance Testing
- Clear cache and cookies of the browser
- Get Fiddler in to the recording mode - F12
- Run prepared test cases
- Save the Fiddler log and clear the fiddler session
- Run prepared test cases again without clearing cache and cookies to measure cached site performance
- Analyze results

Analyzing results:
- Total Sequence Time: good result is <= 3 seconds
- Request Count: good result is <= 50 requests
- Page download Size: good result is <= 100 KB

Example:
- Google search for 'fiddler2' - good performance :)