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:title: Metrics
Metrics
=======
Event Overview
--------------
The following table illustrates the event and pipeline processing
sequence as it relates to some of the metrics described in
:ref:`statsd`. This is intended as general guidance only and is not
an exhaustive list.
+----------------------------------------+------+------+------+--------------------------------------+
| Event | Metrics | Attribute |
+========================================+======+======+======+======================================+
| Event generated by source | | | | event.timestamp |
+----------------------------------------+------+ + +--------------------------------------+
| Enqueued into driver queue | | | | |
+----------------------------------------+------+ + +--------------------------------------+
| Enqueued into tenant trigger queue | | | | event.arrived_at_scheduler_timestamp |
+----------------------------------------+ + [8] + +--------------------------------------+
| Forwarded to matching pipelines | [1] | | | |
+----------------------------------------+ + + +--------------------------------------+
| Changes enqueued ahead | | | | |
+----------------------------------------+ + + +--------------------------------------+
| Change enqueued | | | | item.enqueue_time |
+----------------------------------------+------+------+ +--------------------------------------+
| Changes enqueued behind | | | | |
+----------------------------------------+------+------+ +--------------------------------------+
| Set item configuration | | | | build_set.configured_time |
+----------------------------------------+------+------+ +--------------------------------------+
| Request files changed (if needed) | | | | |
+----------------------------------------+ +------+ +--------------------------------------+
| Request merge | [2] | | | |
+----------------------------------------+ +------+ +--------------------------------------+
| Wait for merge (and files if needed) | | | [9] | |
+----------------------------------------+------+------+ +--------------------------------------+
| Generate dynamic layout (if needed) | [3] | | | |
+----------------------------------------+------+------+ +--------------------------------------+
| Freeze job graph | [4] | | | |
+----------------------------------------+------+------+ +--------------------------------------+
| Request global repo state (if needed) | | | | build_set.repo_state_request_time |
+----------------------------------------+ [5] +------+ +--------------------------------------+
| Wait for global repo state (if needed) | | | | |
+----------------------------------------+------+------+ +--------------------------------------+
| Deduplicate jobs | | | | |
+----------------------------------------+------+------+ +--------------------------------------+
| Acquire semaphore (non-resources-first)| | | | |
+----------------------------------------+------+------+ +--------------------------------------+
| Request nodes | | | | request.created_time |
+----------------------------------------+ [6] +------+ +--------------------------------------+
| Wait for nodes | | | | |
+----------------------------------------+------+------+ +--------------------------------------+
| Acquire semaphore (resources-first) | | | | |
+----------------------------------------+------+------+ +--------------------------------------+
| Enqueue build request | | | | build.execute_time |
+----------------------------------------+ [7] +------+ +--------------------------------------+
| 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
====== =============================
|
