DRDS provides the monitoring feature to help you check the status of your instances. You can view the detailed information about monitoring metrics of instances, databases, or storage nodes in the console. This topic describes how to view performance monitoring data of a DRDS instance on the Instance Monitoring page in the console.

Monitoring metrics of instances

Metric category Monitoring metric Parameter Description
Resource CPU cpu The average CPU utilization of the compute node in the DRDS instance.
Memory old The memory usage of the compute node in the DRDS instance. Memory usage fluctuations are normal.
Network netin: inbound traffic The total inbound traffic of the compute node in the DRDS instance. Unit: Kbit/s. Inbound network traffic is generated when a storage node returns data to the compute node.
netout: outbound traffic The total outbound traffic of the compute node in the DRDS instance. Unit: Kbit/s. Outbound network traffic is generated when the compute node sends physical SQL statements to the storage node or the compute node returns data to applications.
Engine Logical QPS lqps The total number of SQL statements that are processed by the instance per second.
Physical QPS pqps The total number of SQL operations that are sent from the compute node to the storage node per second.
Logical RT lrt The average response time (RT) for processing each SQL statement by the DRDS instance.
Physical RT prt The average RT for processing SQL statements that are sent from the compute node to the storage node.
Connections con The total number of connections between an application and the DRDS instance.
Active Threads thread The number of threads that are used to execute SQL statements in the DRDS instance.
Note
  • The data collection cycle is 1 minute for the metrics of the Resource category and 5 seconds for the metrics of the Engine category in the preceding table.
  • You can view the monitoring data that is generated within seven days.

Procedure

  1. Log on to the DRDS console.
  2. In the top navigation bar, select the region where the target instance is located.
  3. On the Instances page, find the instance and click the instance ID.
  4. In the left-side navigation pane, choose Monitoring and Alerts > Instance Monitoring.
  5. On the Instance Monitoring page, specify the following parameters.
    Parameter Description
    Monitoring Index The metric category. Select Resource or Engine.
    Monitoring Index The monitoring metrics of the instance. Select the monitoring metric that you want to view. For more information about monitoring metrics, see Monitoring metrics of instances.
    Query Time The query time. You can specify the query time as 1 hour, 6 hours, 12 hours, one day, or one week. You can also customize a query time range. The minimum time range is 1 minute and the maximum time range is one week.