RTMT alerted me that the CCM Pub's CPU was over 90% and that "DBL (80 percent) uses most of the CPU". When looking in the task manager to see which process was responsible for the high utilization, I noticed that I have 9 occurrences of dllhost.exe, is this normal ? Why so many occurrences ? The only events in the event viewer was that 14 phones were deployed using auto-registration. Call process also had a glitch during CPU spike, a few users couldn't have an external line to make a call. So, is it auto-registration that caused high CPU ? Why many occurrences of the dllhost.exe process and what would be the normal/average CPU utilization for a cluster with 1 Pub, 1 TFTP and 4 Subs for over 2000 devices ?
Thanks for helping me sort that out!