Barometer Release Notes

This document provides the release notes for Euphrates release of Barometer.

Important notes

None to date.


The Barometer@OPNFV project adds a platform telemetry agent to compute nodes that is capable of retrieving platform statistics and events, and relay them to Openstack Gnocchi and Aodh. The telemetry agent currently supported by barometer is collectd. Some additional collectd plugins and application were developed to add the following functionality:

Write/publishing Plugins:

  • aodh plugin: A notification plugin that pushes events to Aodh, and creates/updates alarms appropriately.
  • SNMP agent plugin: A write plugin that will act as an AgentX subagent that receives and handles queries from SNMP master agent and returns the data collected by read plugins. The SNMP Agent plugin handles requests only for OIDs specified in configuration file. To handle SNMP queries the plugin gets data from collectd and translates requested values from collectd’s internal format to SNMP format. Supports SNMP: get, getnext and walk requests.
  • gnocchi plugin: A write plugin that pushes the retrieved stats to Gnocchi. It’s capable of pushing any stats read through collectd to Gnocchi, not just the DPDK stats.

Read Plugins:

  • Intel RDT plugin: A read plugin that provides the last level cache utilization and memory bandwidth utilization.
  • virt plugin: A read plugin that uses virtualization API libvirt to gather statistics and events about virtualized guests on a system directly from the hypervisor, without a need to install collectd instance on the guest.
  • Open vSwitch stats plugin: A read plugin that retrieves interface stats from OVS.

In addition to the previous plugins from the Danube Release described below.

Release Data

Project Euphrates/barometer/barometer@opnfv
Repo/commit-ID barometer/opnfv-5.1.0
Release designation Euphrates 5.1.0
Release date December 15th, 2017
Purpose of the delivery Official OPNFV release

Version change

Module version changes

  • There have been no version changes.

Document version changes

Reason for version

Feature additions


BAROMETER-51 RDT Cache Feature
BAROMETER-53 RAS Metrics and Events/ MCELOG Memory Errors
BAROMETER-55 Libvirt Metrics and Events
BAROMETER-56 Openvswitch Mrtics and Events
BAROMETER-60 Gnocchi Plugin



BAROMETER-80 SNMP Agent testing with Intel RDT, MCELOG, Hugepages, and OVS Stats not functional in the Apex image of OPNFV Release E


Software deliverables

Features to Date

Release B

The features implemented for OPNFV release B (as part of SFQM) in DPDK include:

  • Callback API to enable TX/RX timestamping to measure latency through DPDK.
  • Extended NIC statistics API for 1GB, 10GB and 40GB NICs to expose detailed statistics for DPDK interfaces in addition to the overall aggregate statistics.
  • DPDK Keep Alive.

Release C

The features implemented for OPNFV release C (as part of SFQM) include:

  • DPDK extended NIC stats API improvement; migrate from key value pairs to using id value pairs.
  • DPDK Keep Alive improvement, so that core status is exposed through a posix shared memory object.
  • collectd dpdkstat plugin that can retrieve DPDK interface statistics.
  • collectd ceilometer plugin that can publish any statistics collected by collectd to ceilometer.
  • Fuel plugin support for the collectd ceilometer plugin for OPNFV.

Release D

The features implemented for OPNFV release D include:

  • collectd hugepages plugin that can retrieves the number of available and free hugepages on a platform as well as what is available in terms of hugepages per socket.
  • collectd Open vSwitch Events plugin that can retrieves events from OVS.
  • collectd mcelog plugin that can use mcelog client protocol to check for memory Machine Check Exceptions and sends the stats for reported exceptions.
  • collectd ceilometer plugin that can publish any statistics collected by collectd to ceilometer.

Documentation deliverables

  • Configuration guide
  • User guide
  • Release notes
  • Scenario documentation.

Known Limitations, Issues and Workarounds

System Limitations

For Intel RDT plugin, compute node needs to support Intel RDT.

Known issues

No known issues to date.




  • None to date.

Test Result

Barometer@OPNFV Euphrates has undergone QA test runs with the following results: