netdata/collectors/freebsd.plugin/integrations/kern.ipc.sem.md

kern.ipc.sem

Plugin: freebsd.plugin Module: kern.ipc.sem

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	system.ipc_semaphores	IPC semaphore utilization
semaphore_arrays_used	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:

[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.

cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config netdata.conf

Options

Config options

| Name | Description | Default | Required | |:----|:-----------|:-------|:--------:| | kern.ipc.sem | Enable or disable semaphore metrics. | yes | no |

Examples

There are no configuration examples.