Hi. We had an incident a couple days ago where Moodle ground to a snails pace, a few hours later eventually the pages would not even load. The cpu and memory resources on the web and data server looked great, they appeared to have very little load on the servers.
Can anyone give me a troubleshooting hint for a system that looks healthy but has a very slow moodle running?
We tried a couple IIS Resets which had little effect, after we rebooted the servers everything has been fine for the past 2 days.
===My environment is :
Moodle 2.6.8 Windows 2008 server, IIS 7.5 , php 5.5, 14gb Memory, 4 cpu, php opcache enabled
Mysql1 on seperate server, same specs as above: Mysql server 5.1, windows 2008 64 bit
Zend Extension Build API220090626,NTS,VC9 PHP Extension Build API20090626,NTS,VC9 Thread Safety disabled System Windows NT MOODLE2TEST 6.1 build 7601 (Windows Server 2008 R2 Standard Edition Service Pack 1) i586 Build Date Aug 15 2012 19:57:50 Compiler MSVC9 (Visual C++ 2008) Architecture x86