Timeline for Google Webmaster Tools - Why site performance graph goes up and down, even if the site has never changed?
Current License: CC BY-SA 3.0
7 events
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| Dec 23, 2011 at 2:22 | comment | added | DisgruntledGoat | The "network between you and Googlebot" point is completely negated by the next paragraph. Google doesn't measure site speed, it's taken from real users with the Google toolbar. Thus it's more a function of user's connection speed. | |
| Dec 22, 2011 at 19:11 | comment | added | Su' | Besides the post link I added as a comment up top, here's a Google image search for "google webmaster tools performance graph", which should give you plenty of samples. | |
| Dec 22, 2011 at 19:00 | comment | added | Marco Demaio | @Su': excellent link, but the question is still open. In the link you provided, they explain very well, they say graph "often represents an aggregate of thousands of data points, collected from all around the world", basically a huge average. Well an average should be even more consistent and show a more stright graph since the site has never changed and the graph is over 7 months. Let's change the question in this way: "Dear John and Su' do your sites' performance graphs in GWT go up and down like mine?" :) | |
| Dec 22, 2011 at 18:13 | comment | added | Su' | @MarcoDemaio Again, you're assuming some things are constant, when they are not. I've added a documentation link above for the "different pages" comment; it's an average of many pages, coming from many users (so their individual connection performance also comes into play), not a single reference point. Also, why are you assuming Google always tests your site from a single location? They have servers all over the place. | |
| Dec 22, 2011 at 18:10 | history | edited | Su' | CC BY-SA 3.0 |
added 241 characters in body
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| Dec 22, 2011 at 18:02 | comment | added | Marco Demaio | I don't understand when you say: "Different pages will perform differently. An optimized page will perform better than an unoptimized one." I don't see how could the graph be influenced by page optimization since I said the site has never been changed. About CDN i though they are great when you have international audience [ref. serverfault.com/questions/63403/…, my site has basically only Italian audience. Moreover it doesn't answer to why the graph changes, Google is one, it's always testing the same site from the same locations. | |
| Dec 22, 2011 at 17:19 | history | answered | John Conde♦ | CC BY-SA 3.0 |