Maniphest T316921

Implement SLI measurement for ATS
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	Vgutierrez
	Sep 2 2022, 8:38 AM

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Description

As part of the ongoing work to define a Service-Level Objective (SLO) for the backend caching layer component of the CDN, we need to implement a Service-Level Indicator (SLI) specific to ATS

Details

	Project	Branch	Lines +/-	Subject
	operations/grafana-grizzly	master	+14 -0	Add Trafficserver SLO dashboard
	operations/puppet	production	+9 -8	mtail::atsbackend: Increase processing time to 150ms
	operations/puppet	production	+19 -0	mtail::atsbackend: Add SLI counters

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		Status	Subtype	Assigned	Task
		Resolved		Vgutierrez	T316921 Implement SLI measurement for ATS
		Resolved		Vgutierrez	T317748 ATS cache read p999 metrics shows up requests taking up to 1 second on cache read operations

Event Timeline

Vgutierrez created this task.Sep 2 2022, 8:38 AM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptSep 2 2022, 8:38 AM

Vgutierrez triaged this task as Medium priority.Sep 2 2022, 8:39 AM

Vgutierrez moved this task from Triage to In Progress on the Traffic board.

Change 829163 had a related patch set uploaded (by Vgutierrez; author: Vgutierrez):

[operations/puppet@production] mtail::atsbackend: Add SLI counters

https://gerrit.wikimedia.org/r/829163

gerritbot added a project: Patch-For-Review.Sep 2 2022, 10:44 AM

Change 829163 merged by Vgutierrez:

[operations/puppet@production] mtail::atsbackend: Add SLI counters

https://gerrit.wikimedia.org/r/829163

Maintenance_bot removed a project: Patch-For-Review.Sep 2 2022, 2:30 PM

Change 829214 had a related patch set uploaded (by Vgutierrez; author: Vgutierrez):

[operations/grafana-grizzly@master] Add Trafficserver SLO dashboard

https://gerrit.wikimedia.org/r/829214

gerritbot added a project: Patch-For-Review.Sep 2 2022, 3:32 PM

Change 829757 had a related patch set uploaded (by Vgutierrez; author: Vgutierrez):

[operations/puppet@production] mtail::atsbackend: Increase processing time to 150ms

https://gerrit.wikimedia.org/r/829757

Change 829757 merged by Vgutierrez:

[operations/puppet@production] mtail::atsbackend: Increase processing time to 150ms

https://gerrit.wikimedia.org/r/829757

Change 829214 merged by Vgutierrez:

[operations/grafana-grizzly@master] Add Trafficserver SLO dashboard

https://gerrit.wikimedia.org/r/829214

SLO dashboard available in https://grafana.wikimedia.org/d/slo-trafficserver-tmpl/trafficserver-slos-grizzly-template?orgId=1

Vgutierrez closed subtask T317748: ATS cache read p999 metrics shows up requests taking up to 1 second on cache read operations as Resolved.Oct 13 2022, 4:05 PM