pivotal-cf / docs-monitoring

Content Moved

The contents of docs-monitoring for TAS/PAS v2.7 and later have moved to the monitoring subfolder of https://github.com/pivotal-cf/docs-pas.

docs-monitoring's Issues

Question about kpi page

I have some docs questions.. not sure who is the best person to ask, so just post it here.

gorouter.total_routes

The recommanded measurement says 5-minute average of the per second delta,
but the metrics is emitted per 30s. How to calculate the per second delta?

---

number-of-route-registration-messages-sent-and-received

The recommanded measurement:

Difference of 5-minute average of the per second deltas for gorouter.registry_message.route-emitter and sum of route_emitter.HTTPRouteNATSMessagesEmitted for all Route Emitters

is hard to understand and misleading depending on interpretation...

Does it mean:
1.

5minAvg(perSecDelta(gorouter.registry_message.route-emitter)) 
-
5minAvg(sum(route_emitter.HTTPRouteNATSMessagesEmitted))

Or,
2.

5minAvg(  
  perSec(
    gorouter.registry_message.route-emitter
    -
    sum(route_emitter.HTTPRouteNATSMessagesEmitted)
  )
)

From the text description provided for this metrics, the second formula makes
more sense to me. But when I read the recommended measurement, I interpreted
the first formula as I understand. The text representation for the second
formula should be somehting like:

5-minute average of the per second difference between
gorouter.registry_message.route-emitter and the sum of
route_emitter.HTTPRouteNATSMessagesEmitted for all Route Emitters

But even the second formula is not practical, given the metrics frequency is
with each event.

---

Not sure both of the questions are relevent though, happy to have a discussion.

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