I used the free Web Page Analyzer script to test four settings and compare the results that were shown on the website. I did test the following settings:

• WP-Cache enabled, Google Analytics off
• WP-Cache enabled, Google Analytics on
• WP-Cache off, Google Analytics on
• WP-Cache off, Google Analytics off

Let me give you a few instructions about the images below:

Object Type refers to all files that belong to a certain type such as HTML or CSS files.
Size is the total size of all files that belong to a certain type.
Download T1 the total loading time for a T1 connection (1.54 Mbps) in seconds.

WP-Cache enabled, Google Analytics off:

WP-Cache enabled, Google Analytics on:

WP-Cache disabled, Google Analytics on:

WP-Cache disabled, Google Analytics off:

The results are quite obvious. Loading time is reduced quite a bit when I turn off WP-Cache and Google Analytics. The total loading time for a T1 connection is 1.86 seconds while it is 2.25 seconds if both options are turned on.

Users with slower connections will see a hugh decrease in total loading time in seconds which is absolutely what I wanted to achieve. There are however two aspects that I have to consider.

Turning off wp-cache reduces the loading time but increases the load on the server because mysql requests are not cached anymore. This could lead to troubles for sites that face lots of visitors, e.g. if your site makes it on the digg frontpage. I would suggest to turn on wp-cache again if that happens to be able to handle the load.

Turning of Google Analytics does not have any negative impact on your site but webmasters with no other statistics script have the problem that they do not have access to their statistics anymore. I’m using awstats instead of Google Analytics on my server. If you are unsure contact your webhost and ask which script they are offering.