* YSlow for Firebug to see if anything is really loading slowly / being gross
* Like you mentioned, YUI Compressor to minify/compress CSS and JS
* We use Symfony so the Symfony dev toolbar to profile slow SQL queries and generally see what is causing pages to render slowly.
* Lately, Firebug's NET panel to monitor what requests are taking the most time.
* YSlow for Firebug to see if anything is really loading slowly / being gross
* Like you mentioned, YUI Compressor to minify/compress CSS and JS
* We use Symfony so the Symfony dev toolbar to profile slow SQL queries and generally see what is causing pages to render slowly.
* Lately, Firebug's NET panel to monitor what requests are taking the most time.