Forum Moderators: Robert Charlton & goodroi
I've never seen anything from Google that mentions googlebot speed data being used for the Site Performance ranking metric - have you go a reference for it?
How Google Measures Page Speed
Singhal says there are two primary ways Google will measure page speed:
1. How a page responds to Googlebot
2. Load time as measured by the Google Toolbar
[edited by: TheMadScientist at 9:16 pm (utc) on Apr 13, 2010]
There are SOOOO many other ways to get major boosts in site speed. Check out those two main speed tools [webmasterworld.com].
Grade F on Use a Content Delivery Network (CDN)
There are 50 static components that are not on CDN.
You can specify CDN hostnames in your preferences. See YSlow FAQ for details.
* http:// www.google-analytics.com/ga.js
* http:// www.google.com/coop/cse/brand?...
* http:// partner.googleadservices.com/gampad/google_service.js
* http:// partner.googleadservices.com/gampad/google_ads.js
* http:// as.casalemedia.com/s?...
* http:// www.google.com/cse/intl/en/images/google_custom_search_watermark.gif
* http:// tags.expo9.exponential.com/tags/12345/ROS/tags.js
* http:// a.tribalfusion.com/j.ad?...
* http:// media.fastclick.net/w/get.media?...
* http:// s0.2mdn.net/879366/flashwrite_1_2.js
* http:// amch.questionmarket.com/adscgen/st.php?...
* http:// s0.2mdn.net/1649785/Motorola_Devour_SmartSleekSocial728x90.swf?...
* http:// t.mookie1.com/t/v1/imp?...
* http:// a.tribalfusion.com/j.ad?...
* http:// media.fastclick.net/w/get.media?...
* http:// ad.doubleclick.net/.../click.here?...
* http:// s0.2mdn.net/961941/160x600_rumor.swf
* http:// a.tribalfusion.com/j.ad?...
* http:// media.fastclick.net/w/get.media?...
* http:// cdn.fastclick.net/fastclick.net/cid51376/v8flash.js
* http:// cdn.fastclick.net/fastclick.net/cid220122/38380_Frogger_300x250.swf?...
* http:// cdn.fastclick.net/fastclick.net/cid220122/tracknfield_160x600_0809.jpg
When looking at flagged issues regarding common third-party code such as website analytics scripts, one factor that can also play a role is how wide-spread these scripts are on the web. If they are common across the web, chances are that the average user's browser will have already cached the DNS lookup and the content of the script. While these scripts will still be flagged as separate DNS lookups, in practice they might not play a strong role in the actual load time.