How is the metric 'CPU Utilization by Cores' calculated in Site24x7 Linux Monitoring?
The metric 'CPU Utilization by Cores' can be viewed under the CPU tab ( Server > Server Monitor > Servers > click on a monitor > CPU ) for a Linux server monitor in Site24x7.
Command Executed:
Sample Output:
Explanation:
corename -- UserModeTime -- NiceTime -- SystemModeTime -- IdleTime -- IOWaitTime -- InterruptServicingTime -- SoftirqsServicingTime -- OtherOsVirtualEnvTime -- GuestOsVirtualCpuRunTime -- NicedGuestRunTime
Metric Calculation Formula:
For each CPU core, the below formula will be executed to get the CPU core utilization:
coreCpuTotalTime = UserModeTime+NiceTime+SystemModeTime+IdleTime-IOWaitTime+InterruptServicingTime+SoftirqsServicingTime-OtherOsVirtualEnvTime+GuestOsVirtualCpuRunTime+NicedGuestRunTime
coreCpuUsage = UserModeTime+SystemModeTime
coreUtilizationPercent = round((((coreCpuUsage)/coreCpuTotalTime)*100),2)
Know how the total CPU usage calculated for a Linux server monitor.