I'm also having problem regarding my Moodle performance.
My current Environment is :
- 2 Server EC2 type small (Memory 2GB), and using ELB for the load balancer
- 2 instances of memcached (512 MB & 1 GB) on different ports, one instance dedicated to
sessions and one instance to MUC
- for the Database server I use RDS - Mysql type Micro (Memory 1GB)
I think It would be fast enough. But When I try access and reloading a page multiple time here is the execution time (from XHprof).
Why I say it not fast enough?
Because when I try another environment with just using 1 instance EC2 type small (Memory 2GB), no use of memcached, and same type of RDS. I'm found this execution time.
It almost 2 times faster.
When I see the full graph I'm find that the problem is when get object from memcached & mysql.
Do you have any suggestion Regarding my problem?