I think the Joomla world also can learn a lot of Drupal with regarding to performance and this is a webinar for devs that would listening how Drupal is doing.Performance Intelligence for Enterprise Drupal
acquiawebinars.webex.com/mw0306lb/mywebex/default.do?nomenu=true&siteurl=acquiawebinars&service=6&main_url=https%3A%2F%2Facquiawebinars.webex.com%2Fec0605lb%2Feventcenter%2Fevent%2FeventAction.do%3FtheAction%3Ddetail%26confViewID%3D279067880%26siteurl%3Dacquiawebinars%26%26%26APCO Worldwide will also discuss how they succeed in implementing their high profile websites with the help of critical support and scalable enterprise hosting to handle as many as 20 million page views in 12 hours.