---
title: ''
description: Telegraf plugin for collecting metrics from Linux Sysctl Filesystem
url: https://docs.influxdata.com/telegraf/v1/input-plugins/linux_sysctl_fs/
estimated_tokens: 463
product: Telegraf Controller
version: v1
publisher: InfluxData
canonical: https://docs.influxdata.com/telegraf/v1/input-plugins/linux_sysctl_fs/
date: '2026-05-21T20:10:18+02:00'
lastmod: '2026-05-21T20:10:18+02:00'
---

==========

* Telegraf v1.24.0+

[Plugin source](https://github.com/influxdata/telegraf/tree/v1.39.0/plugins/inputs/linux_sysctl_fs/)[Download configuration](https://raw.githubusercontent.com/influxdata/telegraf/refs/tags/v1.39.0/plugins/inputs/linux_sysctl_fs/sample.conf)

# Linux Sysctl Filesystem Input Plugin

This plugin gathers metrics by reading the [system filesystem](https://www.kernel.org/doc/Documentation/sysctl/fs.txt) files on[Linux](https://kernel.org/) systems.

**Introduced in:** Telegraf v1.24.0**Tags:** system**OS support:** linux

## Global configuration options

Plugins support additional global and plugin configuration settings for tasks
such as modifying metrics, tags, and fields, creating aliases, and configuring
plugin ordering. See [CONFIGURATION.md](/telegraf/v1/configuration/#plugins) for more details.

## Configuration

```toml
# Provides Linux sysctl fs metrics
[[inputs.linux_sysctl_fs]]
  # no configuration
```

## Metrics

`linux_sysctl_fs` metric:

* tags: *none*
* fields:
  * `aio-max-nr` (unsigned integer)
  * `aio-nr` (unsigned integer)
  * `dentry-age-limit` (unsigned integer)
  * `dentry-nr` (unsigned integer)
  * `dentry-unused-nr` (unsigned integer)
  * `dentry-want-pages` (unsigned integer)
  * `dquot-max` (unsigned integer)
  * `dquot-nr` (unsigned integer)
  * `inode-free-nr` (unsigned integer)
  * `inode-nr` (unsigned integer)
  * `inode-preshrink-nr` (unsigned integer)
  * `super-max` (unsigned integer)
  * `super-nr` (unsigned integer)
  * `file-max` (unsigned integer)
  * `file-nr` (unsigned integer)

## Example Output

```text
> linux_sysctl_fs,host=foo dentry-want-pages=0i,file-max=44222i,aio-max-nr=65536i,inode-preshrink-nr=0i,dentry-nr=64340i,dentry-unused-nr=55274i,file-nr=1568i,aio-nr=0i,inode-nr=35952i,inode-free-nr=12957i,dentry-age-limit=45i 1490982022000000000
```