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 Complete			Fully Loaded
	Load Time	First Byte	Start Render	DOM Elements	Time	Requests	Bytes In	Time	Requests	Bytes In
First View	0.518s	0.391s	0.000s	14	0.518s	1	1 KB	0.518s	1	1 KB
Repeat View	0.363s	0.237s	0.000s	14	0.363s	1	0 KB	0.363s	1	0 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 Complete			Fully Loaded
	Load Time	First Byte	Start Render	DOM Elements	Time	Requests	Bytes In	Time	Requests	Bytes In
First View	2.251s	0.382s	0.703s	173	2.251s	11	51 KB	2.251s	11	51 KB
Repeat View	1.046s	0.264s	0.552s	173	1.046s	2	6 KB	1.046s	2	6 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.