metrics for checking whether a broker throttles requests based on its quota limits?

[Yu Yang]

Hi, 

Recently we enabled Kafka quota management for our Kafka clusters. We are looking for Kafka metrics that can be used for alerting on whether a Kafka broker throttles requests based on quota.  

There are a few throttle related metrics on Kafka. But none of them can tell accurately whether the broker is throttling the requests.  Could anyone share insights on this? 

kafka.network.produce.throttletimems.requestmetrics.95thPercentile

kafka.network.produce.throttletimems.requestmetrics.Count

Thanks!

Regards, 

-Yu