kern.ipc.sem
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.
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
| Name | Description | Default | Required |
|---|---|---|---|
| kern.ipc.sem | Enable or disable semaphore metrics. | yes | False |
Examples
There are no configuration examples.
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 |