Metrics

Event Overview

The following table illustrates the event and pipeline processing sequence as it relates to some of the metrics described in Statsd reporting. This is intended as general guidance only and is not an exhaustive list.

Event	Metrics			Attribute
Event generated by source		[8]	[9]	event.timestamp
Enqueued into driver queue
Enqueued into tenant trigger queue	[1]			event.arrived_at_scheduler_timestamp
Forwarded to matching pipelines
Changes enqueued ahead
Change enqueued				item.enqueue_time
Changes enqueued behind
Set item configuration				build_set.configured_time
Request files changed (if needed)	[2]
Request merge
Wait for merge (and files if needed)
Generate dynamic layout (if needed)	[3]
Freeze job graph	[4]
Request global repo state (if needed)	[5]			build_set.repo_state_request_time
Wait for global repo state (if needed)
Deduplicate jobs
Acquire semaphore (non-resources-first)
Request nodes	[6]			request.created_time
Wait for nodes
Acquire semaphore (resources-first)
Enqueue build request	[7]			build.execute_time
Executor starts job				build.start_time

Metric	Name
1	event_enqueue_processing_time
2	merge_request_time
3	layout_generation_time
4	job_freeze_time
5	repo_state_time
6	node_request_time
7	job_wait_time
8	event_enqueue_time
9	event_job_time