CDN getting an "F" on all locations?

[jklein]

Strange, your first byte time just tanked in that most recent test. I ran another test and it went back down to a normal level, so I wouldn't worry about it:

http://www.webpagetest.org/result/100628...1/details/

You would definitely see some improvements in render time by merging JS files and spriting some of your icons. You could easily get rid of 10+ HTTP requests on that page which would likely speed things up considerably.

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It is also worth noting that the client CPU is getting pegged about halfway through your waterfall chart - that it what is causing the gap in the waterfall. This usually happens because you have a ton of JS running or a really inefficient code loop of some sort. Fixing that would be a big win - you may be able to use dynatrace to help you diagnose the problem:

http://ajax.dynatrace.com/pages/

Dynatrace is also having a free webinar on Wednesday to demo the new version of Dynatrace Ajax Edition. You can read about all of that here:

http://blog.dynatrace.com/2010/06/24/get...a-program/