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CPU utilization, states and frequencies and key Linux system performance metrics.
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The `/proc/stat` file provides various types of system statistics:
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- The overall system CPU usage statistics
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- Per CPU core statistics
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- The total context switching of the system
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- The total number of processes running
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- The total CPU interrupts
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- The total CPU softirqs
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The collector also reads:
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-`/proc/schedstat` for statistics about the process scheduler in the Linux kernel.
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-`/sys/devices/system/cpu/[X]/thermal_throttle/core_throttle_count` to get the count of thermal throttling events for a specific CPU core on Linux systems.
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-`/sys/devices/system/cpu/[X]/thermal_throttle/package_throttle_count` to get the count of thermal throttling events for a specific CPU package on a Linux system.
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-`/sys/devices/system/cpu/[X]/cpufreq/scaling_cur_freq` to get the current operating frequency of a specific CPU core.
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-`/sys/devices/system/cpu/[X]/cpufreq/stats/time_in_state` to get the amount of time the CPU has spent in each of its available frequency states.
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-`/sys/devices/system/cpu/[X]/cpuidle/state[X]/name` to get the names of the idle states for each CPU core in a Linux system.
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-`/sys/devices/system/cpu/[X]/cpuidle/state[X]/time` to get the total time each specific CPU core has spent in each idle state since the system was started.
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This collector monitors the current number of processes, threads, and context switches on Windows systems.
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It queries the 'System' object from Perflib in order to gather the metrics.
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This collector is only supported on the following platforms:
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-linux
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-windows
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This collector only supports collecting metrics from a single instance of this integration.
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#### Auto-Detection
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The collector auto-detects all metrics. No configuration is needed.
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The collector automatically detects all of the metrics, no further configuration is required.
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#### Limits
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#### Performance Impact
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The collector disables cpu frequency and idle state monitoring when there are more than 128 CPU cores available.
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The default configuration for this integration is not expected to impose a significant performance impact on the system.
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## Setup
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<detailsopen>
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<summary>Config options</summary>
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| Option | Description | Default | Required |
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|:-----|:------------|:--------|:---------:|
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| per cpu core utilization | Collects CPU usage metrics for each individual core, in addition to the system-wide averages. | no | no |
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| cpu idle states | Collects CPU idle state residency metrics for each individual core, showing how much time each core spends in different idle states (C-states). | no | no |
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| update every | Data collection frequency. | 1 | no |
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</details>
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#### via File
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The configuration file name for this integration is `netdata.conf`.
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Configuration for this specific integration is located in the `plugin:proc:/proc/stat` section within that file.
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Configuration for this specific integration is located in the `[plugin:windows:PerflibProcesses]` section within that file.
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The file format is a modified INI syntax. The general structure is:
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## Alerts
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The following alerts are available:
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| Alert name | On metric | Description |
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|:------------|:----------|:------------|
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|[ 10min_cpu_usage ](https://github.com/netdata/netdata/blob/master/src/health/health.d/cpu.conf)| system.cpu | average CPU utilization over the last 10 minutes (excluding iowait, nice and steal) |
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|[ 10min_cpu_iowait ](https://github.com/netdata/netdata/blob/master/src/health/health.d/cpu.conf)| system.cpu | average CPU iowait time over the last 10 minutes |
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|[ 20min_steal_cpu ](https://github.com/netdata/netdata/blob/master/src/health/health.d/cpu.conf)| system.cpu | average CPU steal time over the last 20 minutes |
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There are no alerts configured by default for this integration.
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## Metrics
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This collector monitors Windows Services Status and States.
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It queries Service Management to get the metrics.
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This integration monitors resource utilization grouped by Windows Service.
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It auto-discovers running Windows services via the Service Control Manager and groups each service's process tree to aggregate CPU, memory, I/O, and other metrics per service. Processes not belonging to any service are grouped under 'not-services'.
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This collector is only supported on the following platforms:
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- windows
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This collector only supports collecting metrics from a single instance of this integration.
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This collector supports collecting metrics from multiple instances of this integration, including remote instances.
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### Default Behavior
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#### Auto-Detection
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The collector automatically detects all of the metrics, no further configuration is required.
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All running Windows services are automatically discovered. No configuration is needed.
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#### Limits
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The default configuration for this integration does not impose any limits on data collection.
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#### Performance Impact
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The default configuration for this integration is not expected to impose a significant performance impact on the system.
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No additional SCM query overhead. The service list is already queried by apps.plugin for process naming. Per-iteration work involves walking parent chains to assign service names.
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## Setup
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#### Options
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| Option | Description | Default | Required |
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|:-----|:------------|:--------|:---------:|
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| update every | Data collection frequency. | 30 | no |
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Service charts are enabled by default. Use the `without-services` (or `no-services`) command line option to disable them.
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#### via File
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The configuration file name for this integration is `netdata.conf`.
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Configuration for this specific integration is located in the `[plugin:windows:PerflibServices]` section within that file.
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The file format is a modified INI syntax. The general structure is:
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```ini
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[section1]
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option1 = some value
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option2 = some other value
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[section2]
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option3 = some third value
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```
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You can edit the configuration file using the [`edit-config`](/docs/netdata-agent/configuration#edit-configuration-files) script from the
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