mod_rewrite增加了加载时间

I am using mod_rewrite on my site url right now. Almost done. Before doing this my site was fast. Now it takes 2 or 3 seconds to load and a blank white loading page appears first.

Is it usual for page loading to take more time when using mod_rewrite?

Link without Mod Rewrite http://www.wapinside.com/Songs/webindex.php

Link with Mod Rewrite http://www.wapinside.com/Songs/webindex2.php

This is what is in my .htaccess:

Options +FollowSymLinks
RewriteEngine on

RewriteRule ^w/([^*]+).html$ webindex2.php?dir=$1 [L]
RewriteRule ^web/([0-9]+)/([^*]+).html$ webindex2.php?page=$1&dir=$2 [L]

w/ is for folders and web/ is for folder pages.

mod_rewrite

"Using a high trace log level for mod_rewrite will slow down your Apache HTTP Server dramatically!"

You might be using it. From the documentation, that seems like the only way mod_rewrite could slow down Apache.