[MESOS-9236] Add per-Process event queuing delay metrics.

• Type: Improvement
• Status: Accepted
• Priority: Major
• Resolution: Unresolved
• Component/s: libprocess, metrics
• Assignee: Unassigned
• Reporter: Benjamin Mahler
• Created: 15/Sep/18 21:27
• Updated: 15/Sep/18 21:41

Description

In a similar style to MESOS-9235, we can introduce per-Process metrics that capture the trip time through event queues on a per-Process basis. This could be used to get a better sense of how much of a backlog a particular actor has (e.g. it's taking 10 seconds for an event enqueued into the master to be dequeued).

Ideally this would be of a histogram format (e.g. expose percentiles over a window), but a simple start is to expose the latest time measurement.

Issue Links

• supercedes: MESOS-7815 Add gauge for master event processing time
• supercedes: MESOS-7819 Libprocess internal state is not monitored by metrics.