I have a citrix farm that runs on 3 xenserver hosts.
they are 2003 Enterprise servers x86
They are all disk less and running on an iscsi equallogic SAN
The past few weeks users have been complaining of incredible slowness. Minutes to open windows that used to take 10-15 seconds.
Most of the time we look and we cant find any obvious issues. Plenty of ram, Paging seems in check. Procs are less than 20% on average..
I don't know what to do anymore.
These are 8 virtual proc, 8gig ram VM's.
The xenserver hosts never seem to be used hard at all
Looking at my SAN as a whole,
avg Queue Depth 1.1
avg i/o rate total 2.6MB/s
Avg latency total 1.1ms
avg iops total 287
total rate 2.8MB/s
Any help please. I need some idea how to pin point this. It has become critical as productivity company wide has gone way down.