Friday, July 29, 2011

Performance: the effect of google ads

I've created a test page (on the subject of croydon) that is hosted on Amazon's S3 as a static site. This is part of a series of tests I'm doing to see how best to use AWS and other technologies (mongoDB & Go), and how performance effects ranking (more on this in a later blog).

I'm expecting some delays due to the DNS setup, but the first test looks pretty good



Document CompleteFully Loaded
Load TimeFirst ByteStart RenderDOM ElementsTimeRequestsBytes InTimeRequestsBytes In
First View0.518s0.391s0.000s140.518s11 KB0.518s11 KB
Repeat View0.363s0.237s0.000s140.363s10 KB0.363s10 KB



Document complete in under half a second, and fully loaded about the same! - this shows how fast Amazon's AWS is for this kind of simple site (and it took minutes to set up as well)

Now looks what happens when we add some google JavaScript for the second test


 


Document CompleteFully Loaded
Load TimeFirst ByteStart RenderDOM ElementsTimeRequestsBytes InTimeRequestsBytes In
First View2.251s0.382s0.703s1732.251s1151 KB2.251s1151 KB
Repeat View1.046s0.264s0.552s1731.046s26 KB1.046s26 KB


Document complete is now over 2 1/4 seconds, that seems a heavy price in performance to pay - and as a website owner there is little you can do about this, an irony as Google ranks faster performing sites higher.





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