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collector.cpu.md

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cpu collector

The cpu collector exposes metrics about CPU usage

Metric name prefix cpu
Data source Perflib
Counters ProcessorInformation (Windows Server 2008R2 and later) Processor (older versions)
Enabled by default? Yes

Flags

None

Metrics

These metrics are available on all versions of Windows:

Name Description Type Labels
windows_cpu_cstate_seconds_total Time spent in low-power idle states counter core, state
windows_cpu_time_total Time that processor spent in different modes (idle, user, system, ...) counter core, mode
windows_cpu_interrupts_total Total number of received and serviced hardware interrupts counter core
windows_cpu_dpcs_total Total number of received and serviced deferred procedure calls (DPCs) counter core

These metrics are only exposed on Windows Server 2008R2 and later:

Name Description Type Labels
windows_cpu_clock_interrupts_total Total number of received and serviced clock tick interrupts core
windows_cpu_idle_break_events_total Total number of time processor was woken from idle core
windows_cpu_parking_status Parking Status represents whether a processor is parked or not gauge
windows_cpu_core_frequency_mhz Core frequency in megahertz gauge
windows_cpu_processor_performance Processor Performance is the average performance of the processor while it is executing instructions, as a percentage of the nominal performance of the processor. On some processors, Processor Performance may exceed 100% gauge

Example metric

Show frequency of host CPU cores

windows_cpu_core_frequency_mhz{instance="localhost"}

Useful queries

Show cpu usage by mode.

sum by (mode) (irate(windows_cpu_time_total{instance="localhost"}[5m]))

Alerting examples

prometheus.rules

# Alert on hosts with more than 80% CPU usage over a 10 minute period
- alert: CpuUsage
  expr: 100 - (avg by (instance) (irate(windows_cpu_time_total{mode="idle"}[2m])) * 100) > 80
  for: 10m
  labels:
    severity: warning
  annotations:
    summary: "CPU Usage (instance {{ $labels.instance }})"
    description: "CPU Usage is more than 80%\n  VALUE = {{ $value }}\n  LABELS: {{ $labels }}"