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Useful CPU Processing Statistics

The following metrics are of particular interest for monitoring CPU processing:

Metric Name Description
Milliseconds Elapsed time since last snapshot of metrics was taken. Typically, this is about 10 seconds.You can use this value to calculate an approximate rate.
UserMilliseconds CPU time in milliseconds spent processing user code since the last time metrics were provided.
KernelMilliseconds CPU time in milliseconds spent processing in the system kernel since the last time metrics were provided.
PercentUserTime Percentage of system user time since the last time metrics were provided. This is UserMilliseconds/Milliseconds.
PercentSystemTime Percentage of system kernel time since the last time metrics were provided. This is KernelMilliseconds/Milliseconds.
PercentCpuTime Percentage of both system kernel and system user time since the last time metrics were provided. This is PercentUserTime+PercentSystemTime.
NumberCores

Number of processor cores on host. This value never changes for the life of the process.

The metrics given in percents can be above 100%. To normalize to a maximum of 100%, divide by the number of cores.

For information about additional metrics, see Metrics Published by Database Processes.