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+<!--startmeta
+custom_edit_url: "https://github.com/netdata/netdata/edit/master/collectors/freebsd.plugin/integrations/kern.ipc.sem.md"
+meta_yaml: "https://github.com/netdata/netdata/edit/master/collectors/freebsd.plugin/metadata.yaml"
+sidebar_label: "kern.ipc.sem"
+learn_status: "Published"
+learn_rel_path: "Data Collection/FreeBSD"
+most_popular: False
+message: "DO NOT EDIT THIS FILE DIRECTLY, IT IS GENERATED BY THE COLLECTOR'S metadata.yaml FILE"
+endmeta-->
+
+# kern.ipc.sem
+
+
+<img src="https://netdata.cloud/img/freebsd.svg" width="150"/>
+
+
+Plugin: freebsd.plugin
+Module: kern.ipc.sem
+
+<img src="https://img.shields.io/badge/maintained%20by-Netdata-%2300ab44" />
+
+## Overview
+
+Collect information about semaphore.
+
+
+
+This collector is supported on all platforms.
+
+This collector supports collecting metrics from multiple instances of this integration, including remote instances.
+
+
+### Default Behavior
+
+#### Auto-Detection
+
+This integration doesn't support auto-detection.
+
+#### Limits
+
+The default configuration for this integration does not impose any limits on data collection.
+
+#### Performance Impact
+
+The default configuration for this integration is not expected to impose a significant performance impact on the system.
+
+
+## Metrics
+
+Metrics grouped by *scope*.
+
+The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.
+
+
+
+### Per kern.ipc.sem instance
+
+These metrics shows counters for semaphores on host.
+
+This scope has no labels.
+
+Metrics:
+
+| Metric | Dimensions | Unit |
+|:------|:----------|:----|
+| system.ipc_semaphores | semaphores | semaphores |
+| system.ipc_semaphore_arrays | arrays | arrays |
+
+
+
+## Alerts
+
+
+The following alerts are available:
+
+| Alert name  | On metric | Description |
+|:------------|:----------|:------------|
+| [ semaphores_used ](https://github.com/netdata/netdata/blob/master/health/health.d/ipc.conf) | system.ipc_semaphores | IPC semaphore utilization |
+| [ semaphore_arrays_used ](https://github.com/netdata/netdata/blob/master/health/health.d/ipc.conf) | system.ipc_semaphore_arrays | IPC semaphore arrays utilization |
+
+
+## Setup
+
+### Prerequisites
+
+No action required.
+
+### Configuration
+
+#### File
+
+The configuration file name for this integration is `netdata.conf`.
+Configuration for this specific integration is located in the `[plugin:freebsd]` section within that file.
+
+The file format is a modified INI syntax. The general structure is:
+
+```ini
+[section1]
+    option1 = some value
+    option2 = some other value
+
+[section2]
+    option3 = some third value
+```
+You can edit the configuration file using the `edit-config` script from the
+Netdata [config directory](https://github.com/netdata/netdata/blob/master/docs/configure/nodes.md#the-netdata-config-directory).
+
+```bash
+cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
+sudo ./edit-config netdata.conf
+```
+#### Options
+
+
+
+<details><summary>Config options</summary>
+
+| Name | Description | Default | Required |
+|:----|:-----------|:-------|:--------:|
+| kern.ipc.sem | Enable or disable semaphore metrics. | yes | no |
+
+</details>
+
+#### Examples
+There are no configuration examples.
+
+