Quote:
Originally Posted by crazy cloud
yahoo's Yslow tool is the best way to know the website performance
but it doesnot gives idea about the response time directly
Firefox addon is available for Yslow
|
That's not correct. YSlow was developed for the Yahoo search engine.
Google Page Speed addon for Firebug was NOT developed for Google search engine.
If you want to measure your site's speed then you need to know that every browser is different in its execution/rendering of javascript/CSS.
A mix of YSlow, Google Page Speed and dynaTrace can give you a preview of your site's performance, but ONLY for YOUR OWN internet connection.
To measure every single request you can use Firebug for Firefox (Network tab), Firebug lite for Google Chrome or dynaTrace AJAX edition for Internet Explorer.
A tool called Firefox Throttle (addon for Firefox) gives you the possibility to throttle Firefox's bandwidth usage (good for simulating loading times on slow internet connections).
You must also notice that installed SEO plugins will slow down the loading process because normally this SEO plugins are querying several search engines and other sites to determine PR, Alexa rank, ...
The power of your computer is also a big factor when measuring. If you have a lot of other programs open, loading other websites while measuring, different messengers, P2P programs and others then the loading time will increase.
Once again: tools like Google Page Speed or YSlow show you a kind of "points system" that are valid globally.
This "points systems" do NOT show you the loading speed of a website.
They show you how you can speed up the initial loading of scripts/CSS and rendering, which are NOT the loading time.
Loading time is a total different "thing".
Sites from the USA may be slow in Germany but fast in the USA.
Sites from Korea may be fast in Korea but slow in Germany.
It depends on your ISP, the routing from you to the site's server and many different values that influence the loading time.
If people tell you "YSlow shows you the loading speed", then they have no clue of networks and how browsers work.
I am currently preparing a blog post: Loading Speed Of Different Browsers
Please click on "Add to my Talkupation!" if you like this explanation :P