Benjamin Mahler updated MESOS-7815:
    Labels: mesosphere metrics observability  (was: mesosphere metrics 

> Add gauge for master event processing time
> ------------------------------------------
>                 Key: MESOS-7815
>                 URL: https://issues.apache.org/jira/browse/MESOS-7815
>             Project: Mesos
>          Issue Type: Improvement
>          Components: master
>            Reporter: Benjamin Bannier
>              Labels: mesosphere, metrics, observability
> To diagnose cases where e.g., the master is backlogged, looking at just 
> {{event_queue_messages}} will only tell about the size of the queue, but 
> diagnosing whether this is due to higher message arrival rate or slower 
> processing requires complicated interference with other metrics.
> We should provide metrics to characterize the time it takes to process 
> messages in the queue, optimally with statistics over some window. This would 
> allow better identification of slow requests.
> We should also consider ways to characterizing the arrival rate via some 
> metric with statistics.

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