call drops intermittent and some alerts at that time

[Bekzod Fakhriddinov]

Hi guys. We have users complained about call were not successful , intermittent I didn't see any alerts on the system except this:

12:01:05 naatucm01 local7 2 : 285620: naatucm01.xxx.com: Dec 01 2017 17:01:05.240 UTC :  %UC_RTMT-2-RTMT_ALERT: %[AlertName=CriticalServiceDown][AlertDetail=#012#012#012 Service operational status is DOWN.#012Cisco XCP Directory Service,Cisco XCP Message Archiver,Cisco XCP XMPP Federation Connection Manager.#012The alert is generated on Fri Dec 01 12:01:05 EST 2017 on node naseimp01.xxx.com.][AppID=Cisco AMC Service][ClusterID=][NodeID=naatucm01]: RTMT Alert

XCP is service for IM&Presense is it possible this 2 issues are correlated? 

on the UCCM i see HI for Presence cluster redunduncay is not enabled.... But I remember it was enabled . 

Can XCPservices/IM&P cause call were not successful? 

[Bekzod Fakhriddinov]

I also found this message: 

Call processing cpu is pegging

 Processor load over configured threshold for configured duration of time . Configured high threshold is 90 % cmoninit (42 percent) uses most of the CPU. 

Processor_Info: 

 For processor instance 1: %CPU= 94, %User= 59, %System= 13, %Nice= 0, %Idle= 6, %IOWait= 21, %softirq= 2, %irq= 0. 

 For processor instance _Total: %CPU= 94, %User= 60, %System= 12, %Nice= 0, %Idle= 6, %IOWait= 21, %softirq= 1, %irq= 0. 

 For processor instance 0: %CPU= 95, %User= 60, %System= 11, %Nice= 0, %Idle= 5, %IOWait= 22, %softirq= 1, %irq= 0. 

The alert is generated on Fri Dec 01 00:04:34 EST 2017 on node 10.132.28.13. 

 Memory_Info: %Mem Used= 58, %VM Used= 48. 

 Partition_Info: 

Swap: %Disk Used=34. 

Active: %Disk Used=91. 

Common: %Disk Used=78. 

 Process_Info: processes with D-State:

I guess this may cause our problem... Right ? If yes, how to check history what was causing this cpu overload?