Moodle, WAMP, Apache on Windows and apc.dll not working
I've just inherited a Moodle install which is taking an age (~6-7s at quiet times and ~11s at peak times) to display the front page and general page navigation is slow (over the LAN and Remotely).
My intent is to put in place the APC cache to get things running faster, as it turns out the previous chap had put most of the settings in however it doesn't appear to be working.
Key details are-
Server 2008 Standard 32bit
8 Cores of CPU and 4GB RAM (pretty low utalisation at about 2GB however we will be bumping this up over the easter holiday)
SAN storage (no bottleneck there)
WAMP Server 2.2 (going to look into changing this to IIS over the summer)
~3,000 users site wide with an unkown number using the site at any given time (probably no more than 200)
I can see in the Apache logs
However all other extensions are loading fine.
PHP Warning: PHP Startup: Unable to load dynamic library 'C:\\wamp\\bin\\php\\php5.3.13\\ext\\php_apc.dll' - The specified module could not be found.\r\n in Unknown on line 0
Got about an hour this afternoon where I can bring the server up/down with no issues so does anyone have any thoughts on what to try?
Before anyone asks - Yes I have rebooted the server, yes I have rebooted the web services, yes I don't like WAMP but can't change it right now.
Thanks to anyone who helps out :)