Metrics

Description

This section describes metrics reported by DDM to Cloud Eye as well as their namespaces, metric list, and dimensions. You can use APIs provided by Cloud Eye to query the metric information generated for DDM.

Metrics

Metric Name	Description	Value Range	Monitored Object	Monitoring Interval (Raw Data)
CPU Usage	CPU usage of the DDM instance node	0–100%	DDM nodes	1 minute
Memory Usage	Memory usage of the DDM instance node.	0–100%	DDM nodes	1 minute
Network Input Throughput	Incoming traffic per second of the DDM instance node	≥ 0 byte/s	DDM nodes	1 minute
Network Output Throughput	Outgoing traffic per second of the DDM instance node	≥ 0 byte/s	DDM nodes	1 minute
QPS	Requests per second of the DDM instance node	≥ 0 counts	DDM nodes	1 minute
Read/Write Ratio	Read/Write ratio of the DDM instance node within n each monitoring period	0-100%	DDM nodes	1 minute
Reads	Read operations of the DDM instance node within each monitoring period	≥ 0 counts/s	DDM nodes	1 minute
Writes	Write operations of the DDM instance node within a monitoring period	≥ 0 counts/s	DDM nodes	1 minute
Slow SQL Logs	Number of slow SQL queries added within a monitoring period	≥ 0 counts	DDM nodes	1 minute
Average Response Latency	Average SQL response latency of the DDM instance node	≥ 0 ms	DDM nodes	1 minute
Connections	Connections of the DDM instance node	≥ 0 counts	DDM nodes	1 minute
Tuning Backend Connections	Percentage of active connections (from a DDM node to the target RDS DB instance) in maximum backend connections	0-100%	DDM nodes	1 minute