Hi Maryam and all Barometer folks, As suggested, I did a bit of editing at: * Metrics and Events List wiki under reconstruction https://wiki.opnfv.org/display/fastpath/Metrics+and+Events+Requirements+High+Level+List
General synopsis below, and probably a few more tweaks will help. Al -=-=-=-=-=-=-=-=- Distinction between metrics and events For the purposes of Platform Service Assurance, it's important to distinguish between metrics and events as well as how they are measured (from a timing perspective). NEW A Metric is a (standard) definition of a quantity describing the performance and/or reliability of a monitored function, which has an intended utility and is carefully specified to convey the exact meaning of the measured value. A measured value of a metric is produced in an assessment of a monitored function according to a method of measurement. For example the number of dropped packets for a networking interface is a metric. OLD A metric (at any point in time) represents a measurement of an aspect of a particular platform resource for the purpose of monitoring. For example the number of dropped packets for a networking interface. NEW An Event is defined as an important state change in a monitored function. The monitor system is notified that an event has occurred using a message with a standard format. The Event notification describes the significant aspects of the event, such as the name and ID of the monitored function, the type of event, and the time the event occurred. For example, an event notification would take place if the link status of a networking device on a compute node suddenly changes from up to down on a node hosting VNFs in an NFV deployment. OLD An Event can be thought of as a notification about a notable condition (usually a message with an associated severity and time). Events are used to notify monitoring systems of the occurrence of something that they should be aware of. For example, if the link status of a networking device on a compute node suddenly changes from up to down on a node hosting VNFs in an NFV deployment. For "metric", I used the definition from IETF RFC7799: https://tools.ietf.org/html/rfc7799#section-3.1 Performance Metric The standard definition of a quantity, produced in an assessment of performance and/or reliability of the network, which has an intended utility and is carefully specified to convey the exact meaning of a measured value. (This definition is consistent with that of Performance Metric in [RFC2330] and [RFC6390]). where "network" could be generalized to "system" for our purposes. This was input to the event definition: Drawing from new ITU-T Recommendation G.1022, a simple definition of "Event" can be constructed from the terminology defined there (however, "Event" was not defined in the text): Event In the context of a streaming media player, an event is an important change in the operational state of the player. For example, the player state change from initial buffering to playing state constitutes an event. From: [email protected] [mailto:[email protected]] On Behalf Of Tahhan, Maryam Sent: Tuesday, January 17, 2017 12:42 PM To: [email protected]; Power, Damien; Mcmahon, Tony B Subject: [opnfv-tech-discuss] [barometer] Weekly Call Minutes <Jan 17 2017> * Dev update: https://wiki.opnfv.org/display/fastpath/Barometer+Danube+Development+Updates * Fuel update * Testing plugin updates in virtual deployment. * Apex * Discussions to make sure the plugins and configurations for D release plugins are in place. * Testing update: * 6 plugins are ready for internal review. Will be pushed to OPNFV after this. * Place holder Wiki: https://wiki.opnfv.org/display/fastpath/Testing+with+Functest [Action Calin to fill in test details] * VES update: * New spec is available in the testcollector project * VES code will hopefully be cleared for release early next week. * Barometer team to look at the diff in the spec and how to update to VES collectd agent. * Java agent for collectd will be developed. * Collector code will be maintain in the VES repo * ETSI NFV update * Stable draft is available @ https://docbox.etsi.org/ISG/NFV/Open/Drafts/TST008 * Talk Proposals for ONS and OpenStack Boston * Metrics and Events List wiki under reconstruction https://wiki.opnfv.org/display/fastpath/Metrics+and+Events+Requirements+High+Level+List * Other Telemetry initiatives: http://www.t-nova.eu/ [ACTION]: Maryam to update https://wiki.opnfv.org/display/fastpath/Collectd+Metrics+and+Events to include Mcelog plugin stats. [ACTION]: Damien to add metrics that are in progress to the table. BR Maryam
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