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ServiceWatch Metrics

Event Streams sends metrics to ServiceWatch. The metrics provided by default monitoring are data collected at 1‑minute intervals.

Note

For checking metrics in ServiceWatch, refer to the ServiceWatch guide.

Basic Metrics

The following are the basic metrics for the Event Streams namespace.

Indicators whose names are shown in bold below are the indicators selected as key metrics among the default metrics provided by Event Streams. Key metrics are used to build service dashboards that are automatically created for each service in ServiceWatch.

Each metric provides guidance in the user guide about which statistical value is meaningful when querying that metric, and among the meaningful statistics, the statistical values displayed in bold text are the primary statistics. In the service dashboard, primary metrics can be viewed using the primary statistical values.

OS Basic Metrics

Category	Performance items	unit	Detailed description	meaningful statistics
CPU	CPU Usage	Percent	CPU usage	maximum
Disk	Disk Usage	Percent	Disk usage	Maximum
Disk	Disk Write Bytes	Bytes/Second	Write throughput (bytes/second) on block device	average maximum minimum
Disk	Disk Read Bytes	Bytes/Second	Read capacity (bytes/second) from block device	average maximum minimum
Disk	Disk Write Requests	Count/Second	Number of write requests on block device (requests per second)	average maximum minimum
Disk	Disk Read Requests	Count/Second	Number of read requests on block device (requests per second)	average maximum minimum
Disk	Average Disk I/O Queue Size	None	Average queue length of requests issued to the block device	average maximum minimum
Disk	Disk I/O Utilization	Percent	The proportion of time the block device actually spent handling I/O operations	average maximum minimum
Memory	Memory Usage	Percent	Memory usage	Maximum
Network	Network In Bytes	Bytes/Second	Received data rate (bytes/second) on the network interface	average maximum minimum
Network	Network Out Bytes	Bytes/Second	Transmitted capacity (bytes/second) on the network interface	average maximum minimum
Network	TCP Connections	Count/Second	Current total number of successfully established TCP connections	average maximum minimum
Network	Network In Packets	Count	Number of packets received on the network interface	Average Maximum Minimum
Network	Network Out Packets	Count	Number of packets transmitted on the network interface	average maximum minimum
Network	Network In Dropped	Count	Number of packet drops received on the network interface	average maximum minimum
Network	Network Out Dropped	Count	Number of packet drops transmitted from the network interface	average maximum minimum
Network	Network In Errors	Count	Number of packet errors received on the network interface	average maximum minimum
Network	Network Out Errors	Count	Number of packet errors transmitted on the network interface	average maximum minimum

Table. OS basic metrics

Event Streams basic metrics

Category	Performance items	unit	Detailed description	meaningful statistics
JVM	JVM Threads Current	Count	Number of currently active threads	Total Average Maximum Minimum
JVM	JVM Memory Usage	Bytes	Current amount of memory used by the JVM	Total Average Maximum Minimum
JVM	Time spent in GC	None	JVM time spent on garbage collection (GC seconds per minute)	Total Average Maximum Minimum
JVM	Count in GC	Count/Minute	Number of times the JVM executed the garbage collection method	Total Average Maximum Minimum
kafka_controller	Offline Partitions	Count	Number of partitions that cannot be written to or read from because there is no active leader	Total Average Maximum Minimum
kafka_controller	Active Controller	Count	Number of active controllers in the cluster	Total Average Maximum Minimum
kafka_controller	Total of Topics	Count	Number of global topics observed in the active controller	Total Average Maximum Minimum
kafka_controller	Leader Elections	Count/Minute	Leader election when a broker fails	Total Average Maximum Minimum
kafka_controller	Unclean Leader Elections	Count/Minute	Elect a broker with OSR (out-of sync replica) as the leader	Total Average Maximum Minimum
kafka_network	Request Queue	Count	Request queue size	Total Average Maximum Minimum
kafka_server	Zookeeper Expired Sessions	Count/Minute	Zookeeper expired session	Total Average Maximum Minimum
kafka_server	Incoming Messages	Count/Second	Message received by the Broker	Total Average Maximum Minimum
kafka_server	Producer requests	Count/Second	Request (Produce) received by the Broker	Total Average Maximum Minimum
kafka_server	Consumer requests	Count/Second	Request (Fetch) received by the Broker	Total Average Maximum Minimum
kafka_server	Failed Fetch Requests	Count/Minute	Number of failed fetches by the Consumer	Total Average Maximum Minimum
kafka_server	Failed Produce Requests	Count/Minute	Number of failed requests by the Producer	Total Average Maximum Minimum
kafka_server	Incoming Byte Rate	Bytes/Seconds	Byte transmission rate received from client (per broker)	Total Average Maximum Minimum
kafka_server	Outgoing Byte Rate	Bytes/Seconds	Byte transmission rate to the client (by broker)	Total Average Maximum Minimum
kafka_server	Rejected Byte Rate	Bytes/Seconds	Bytes rejected per broker because the record batch size exceeds the max.message.bytes setting	Total Average Maximum Minimum
kafka_server	Online Partitions	Count	Total number of partitions	Total Average Maximum Minimum
kafka_server	Leader Partitions	Count	leader partition count	Total Average Maximum Minimum
kafka_server	Under Replicated Partitions	Count	Number of partitions with insufficient replica count	Total Average Maximum Minimum
kafka_server	Under Minisr Partitions	Count	Number of partitions whose in-sync replica count is less than minIsr	Total Average Maximum Minimum
Systemd	Active Systemd Unit	None	Service Status 1 - Service Running 0 - Service Stopped	-

Table. Event Streams basic metrics

Monitoring Metrics

How-to guides