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

Options

Config options

Option	Description	Default	Required
kern.ipc.sem	Enable or disable semaphore metrics.	yes	no

via 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

Examples

There are no configuration examples.