APM Kafka agent question about MessagesInPerSec metric

Products

• CA Application Performance Management SaaS

Issue/Introduction

The MessagesInPerSec metric reported by the Kafka agent monitor is reporting wrong value.

In the jmx.yaml located at extensions/KafkaExtension/config/modules/kafka/jmx.yaml, the metric type "Rate". It looks like the agent is aggregating over 15s intervals and reporting the value.

snippet from the jmx.yaml for the metric.

  - objectName: "kafka.server:type=BrokerTopicMetrics,name=MessagesInPerSec,topic=*"
    attribute: "Count"
    metricName: "{rootNode}|KafkaServer|BrokerTopicMetrics|{topic}:Messages In Per Sec"
    metricType: "Rate"

Resolution

Use the following metric which should report the proper value that you expect.

SuperDomain|<Hostname>|kafka-monitor|kafka-operator|Kafka|Brokers|kafka-broker1_9393|Default|kafka.server|name=MessagesInPerSec|topic=<topicname>|type=BrokerTopicMetrics:OneMinuteRate