Visvanath Ratnaweera

Hi

You say "I've created an instance" and also "I copied an already installed and used Moodle". I can't imagine anything what that was. Could you disclose the tutorial you followed? Also the information requested in https://moodle.org/mod/forum/discuss.php?d=356184 is useful.

According to your other discussion https://moodle.org/mod/forum/discuss.php?d=457391#p1837122 your site is not working properly anyway. Or were your able to solve that?

I'm a novice in VPL, so may be wrong. But how could VPL, or Moodle, start a GUI program, which needs to run on the user's computer? Moodle + VPL are the server part of the client-server architecture.

"course completion" is too broad. You need to continue localizing the cause. Have you tried the developer tools in the browser, network tool, for example? It might tell you which part of the page takes long. A brute force approach would be to temporarily activate the DB query log before you click the save button and study the queries Moodle generates.

There must be more methods in the Hardware and performance forum. Check its documentation and run a search in the forum https://moodle.org/mod/forum/search.php?id=5.

P.S. This looks like a topic for the H&W forum. Hint to the mod. ;)

More documentation can be found in the Hardware and performance forum https://moodle.org/mod/forum/view.php?id=596, for example Server cluster. Make use of the Advanced forum search on this site https://moodle.org/mod/forum/search.php?id=5.

P.S. This used to be a topic in the Hardware and performance forum. It was reported there that a new group, a Matrix group(?), is now in charge.

The point is Moodle reads and writes to many places. Some are critical for scalability others not. For example moodledata/filedir is not critical. All sorts of caches are. So to get the maximum from the hardware you need to distribute those places accordingly.

That was about performance. Redundancy is a different topic, a harder one IMO.