I have a Windows 2003 box running Citrix Presentation Server 4.5 with all hot-fixes installed. It is running on a HP DL370 G4 server that has a X3.6 800Mhz 1mb processor with 4GB of RAM and 3 72GB hard drives in a RAID 5 configuration. I keep getting a %Interrupt Time Metric Error. When I look at the graph, it shows peaks of 44%, 32%, and 25%. My metric thresholds are at the default level of 0.3%(yellow) and 0.4%(red). These peaks happen during the normal business day. I support 40 citrix users that access our application set which includes the desktop, SQL app, and Office apps. I have the server on a reboot schedule of 48hrs because of a printer auto-create problem.
Do I need to add the 2nd Xeon processor to overcome this metric error? Or do I need to adjust my metrics? What would be the correct metric settings for 40+ users? Would this metric error cause printer auto-create problems?