performance - How do you measure page load speed? -

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i trying quantify "site slowness". in olden days made sure html lightweight, images optimized , servers not overloaded. in high end sites built on top of modern content management systems there lot more variables: third party advertising, trackers , various other callouts, performance of cdn (interestingly enough content delivery networks make things worse), javascript execution, css overload, kinds of server side issues long queries.

the obvious answer every developer clear cache , continuously @ "net" section of firebug plugin. other ways measure "site dragging ass" have used?

yslow tool (browser extension) should you.

yslow analyzes web pages , why they're slow based on yahoo!'s rules high performance web sites.


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