CMS and MySQL performace

[orthohin]

Hi,

when running LAMP locally on a server any CMS seems to be extremely fast in response when browsing it via any web browser.
When instead you use a CMS via most ISP it becomes slower.

What makes it become slower than how it does perform on a local home server?
Among several most common CMS, like Joomla, Drupal and WordPress I noticed that the last one seems to run faster.
Any adivse on how to choose one of the three for best and fastest performance?

Also, what are some alternatives to those three CMS (still free) that would be quite comprehensvice, easy to manage and well documented?

thank you

[Sogo7]

Why do you bother with two accounts to repost old questions that were answered months ago on other websites?

I don't work for BT nor am I a forum mod here yet even I can see that the  orthohin and abirhasan  accounts often share the same IP address, web browser and individual tracking cookies.