Hi Mahsa and Jonah, Since we're adding this new metric to a metrics group that is still using Yammer, ideally I think we want to use RatioGauge to give us the sampling functionality we need. It's possible that we can get similar functionality from Histogram, which I know other Yammer metrics in Kafka use. We are still able to get gauge metrics from the histogram, as they are the most straightforward for the operator to monitor (e.g. if the metric value > X, alert). For example, metrics that are histograms, like EventQueueTimeMs, are often monitored via their p99 or p999 value.
There are several other "thread-idle-ratio" metrics in Kafka, but those are all using the newer, internal KafkaMetrics library's sensors. Best, Kevin Wu On Thu, Jul 10, 2025 at 2:09 PM Mahsa Seifikar <mseifi...@confluent.io.invalid> wrote: > Hi Jonah and Kevin, > > Thanks for your comments. I have now updated the KIP to address your > feedback. > > Please let me know if you have any further questions. > > Best, > Mahsa Seifikar > > On Thu, Jul 3, 2025 at 4:40 PM Mahsa Seifikar <mseifi...@confluent.io> > wrote: > > > Hello all, > > > > I wrote a short KIP to add a new metric for controller thread idleness. > > > > Here is the link: > > > > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-1190%3A+Add+a+metric+for+controller+thread+idleness > > > > Thanks, > > Mahsa Seifikar > > > > > > >
