I'm experiencing performance issues with Moodle 2.1.2.
Here they are:
Timeout 200 KeepAlive On MaxKeepAliveRequests 200 KeepAliveTimeout 3 MinSpareServers 5 MaxSpareServers 15 StartServers 5 MaxClients 20 MaxRequestsPerChild 2000 HostnameLookups Off
I was having considerable performance issues - I have tweaked my settings as follows and it has helped a lot:
This seems to have stopped my server from crashing and while I still see some slow downs when a whole class is taking a test, everyone has always beee able to log on now and site overall is much faster. I am running on a virtual Debian Squeeze with 4GB ram.
I have finally moved Moodle to a fresh installed server with more resources without changing any Apache setting. It works well with 50+ concurrent users now.
Thanks for your help.