[mistwang]

What you proposed does not help, as all requests still go through Apache.
You should replace Apache with LiteSpeed and let LiteSpeed handle everything, unless there is something that LiteSpeed is incapable of.

Are you using any control panel?
Anyway, you can follow our cPanel how to let litespeed read Apache httpd.conf directly, just ignore any cPanel related instructions.
http://www.litespeedtech.com/support...:apache:cpanel

If you have difficulty and want more help from us, we have installation service available.