I have a very big problem. We have installed a Moodle 2.6 in a local Ubuntu Server that has 4GB of RAM. We have configured Apache (MaxClients, MaxRequestPerChild..), installed OPCache, changed memory_limit, extra memory limit of php... and we are testing with Jmeter.
The problem is that when we do a testplan with 20 users, 1 loop, 6 ramp-up period the times for the HttpRequests are too high. For example, the login takes a average of 18 seconds, view a course 6 seconds, view a forum discuss (the higher one) 35 seconds...
As I have read on the Moodle requeriments and in this forum with 4GB of RAM shouldn't be happening this. Could you help me????