You first have to find out whether your system malfunctions - I mean there is something wrong with your hardware, software stack: operating system, web server, database server, .. Moodle code or network - or this is what your plattform can deliver. Did you try http://moodle.org/mod/forum/discuss.php?d=57028 ? (It was linked in http://docs.moodle.org/en/Performance
You say HP BLADE SERVER, what is the processor, disk system? You say 8 GB, that should be sufficient. Are you sure your windows can utilize 8 GB? What version of Windows? Also the webserver, database server, php software and versions are important.
Windows and IIS combination is generally understood to be resource hoggers. Even that should be able to support 20 quiz users on 8 GB!
How is your network setup? Any firewall, dns, routing issues?
How about clients? Any silly local firewalls?
Hardware and performance
Speed UP Moodle! Help!
This discussion has been locked because a year has elapsed since the last post. Please start a new discussion topic.