I built my blog and could not decide on which theme to use, so I went overboard. I downloaded just about every theme I could find and started to pick one. So, in my wp-content/themes directory, I have 1265 themes.
The performance of my site (http://www.heyvan.com/blogs/steve) is pretty bad and a friend of mine tried to duplicate my experience with his server. From my LAN, it can take up to 10 seconds to load my site, while it takes less than 3 seconds to load his site -- and his site is in Dallas TX., while my site is in San Jose, CA.
After looking at Apache, PHP, MySQL, I decided to create a new test site. It has all the themes and plugins, but none of the plugins are activated. The performance problem persisted. Running out of ideas, I removed all of the themes except the one I want to use which is Mandigo 1.36.2.
What a difference. My site is loading very quickly now.
My questions are...
1. Can too many themes impact performance of WordPress 2.6?
2. Is these some piece of code running through that directory for some reason?
3. Is this a coincidence or can some verify these findings on a separate site?
4. Is there something that can be done to allow lots of themes to be loaded without impacting site responsiveness?