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This project will no longer be maintained by Intel. Intel will not provide or guarantee development of or support for this project, including but not limited to, maintenance, bug fixes, new releases or updates. Patches to this project are no longer accepted by Intel. If you have an ongoing need to use this project, are interested in independently developing it, or would like to maintain patches for the community, please create your own fork of the project.

Snap collector plugin - schedstat

This plugin gather linux scheduler statistics from /proc/schedstat (Linux 2.6+) for the Snap telemetry framework.

  1. Getting Started
  1. Documentation
  1. Community Support
  2. Contributing
  3. License
  4. Acknowledgements

Getting Started

System Requirements

  • golang 1.7+ - needed only for building
  • [Linux] (kernel 2.6+)

Operating systems

  • Linux/amd64


Download the plugin binary:

You can get the pre-built binaries for your OS and architecture from the plugin's GitHub Releases page. Download the plugin from the latest release and load it into snapteld (/opt/snap/plugins is the default location for Snap packages).

To build the plugin binary:

Fork Clone repo into $GOPATH/src/

$ git clone<yourGithubID>/snap-plugin-collector-schedstat.git

Build the Snap schedstat plugin by running make within the cloned repo:

$ make

This builds the plugin in ./build/

Configuration and Usage

  • Set up the Snap framework.

  • Configure procPath: path to procfs filesystem if you are running Snap in container

  • Load the plugin and create a task, see example in Examples.

Collected Metrics

List of collected metrics is described in

Plugin does not support collection of metrics for a single core or socket


Example of running Snap schedstat collector and writing data to file.

Ensure Snap daemon is running:

  • initd: service snap-telemetry start
  • systemd: systemctl start snap-telemetry
  • command line: snapteld -l 1 -t 0 &

Download and load Snap plugins:

$ wget
$ wget
$ chmod 755 snap-plugin-*
$ snaptel plugin load snap-plugin-collector-schedstat
$ snaptel plugin load snap-plugin-publisher-file

Create a task manifest file  (exemplary files in [examples/tasks/] (examples/tasks/)):
  version: 1
    type: "simple"
    interval: "1s"
  max-failures: 10
        /intel/proc/schedstat/cpu/*/*/schedYield: {}
        /intel/proc/schedstat/cpu/*/*/scheduleCalled: {}
        /intel/proc/schedstat/cpu/*/*/scheduleLeftIdle: {}
        /intel/proc/schedstat/cpu/*/*/tryToWakeUp: {}
        /intel/proc/schedstat/cpu/*/*/tryToWakeUpLocalCPU: {}
        /intel/proc/schedstat/cpu/*/*/jiffiesRunning: {}
        /intel/proc/schedstat/cpu/*/*/jiffiesWaiting: {}
        /intel/proc/schedstat/cpu/*/*/timeslices: {}
        - plugin_name: "file"
            file: "/tmp/schedstat_metrics.log"

Download an example task file and load it:

$ curl -sfLO
$ snaptel task create -t schedstat-file.yaml
Using task manifest to create task
Task created
ID: 480323af-15b0-4af8-a526-eb2ca6d8ae67
Name: Task-480323af-15b0-4af8-a526-eb2ca6d8ae67
State: Running

See realtime output from snaptel task watch <task_id> (CTRL+C to exit)

$ snaptel task watch 480323af-15b0-4af8-a526-eb2ca6d8ae67

This data is published to a file /tmp/schedstat_metrics per task specification

Stop task:

$ snaptel task stop 480323af-15b0-4af8-a526-eb2ca6d8ae67
Task stopped:
ID: 480323af-15b0-4af8-a526-eb2ca6d8ae67


There isn't a current roadmap for this plugin, but it is in active development. As we launch this plugin, we do not have any outstanding requirements for the next release.

If you have a feature request, please add it as an issue and/or submit a pull request.

Community Support

This repository is one of many plugins in Snap, a powerful telemetry framework. See the full project at

To reach out to other users, head to the main framework or visit Slack.


We love contributions!

There's more than one way to give back, from examples to blogs to code updates. See our recommended process in


Snap, along with this plugin, is an Open Source software released under the Apache 2.0 License.


This software has been contributed by MIKELANGELO & Superfluidity, Horizon 2020 projects co-funded by the European Union.

Thank You

And thank you! Your contribution, through code and participation, is incredibly important to us.