PolarDB-X provides the monitoring feature to help you monitor the status of your instance. You can view the monitoring information about computing and storage resources in the PolarDB-X console. This topic describes how to view the performance data of computing resources.

Procedure

  1. Log on to the PolarDB-X console.
  2. In the top navigation bar, select the region where the target instance is located.
  3. Find the target instance and click its ID.
  4. In the left-side navigation pane, choose Monitoring and Alerting > ComputedMonitoring.
  5. On the Compute Resource Monitoring page, you can view the performance data of your instance, nodes, or cluster.
    Monitoring item Metric Description
    CPU cpu The average CPU utilization of the compute node in the instance.
    Memory old The memory usage of the Java virtual machine (JVM) old generation on the compute nodes in the instance. If the memory usage fluctuates, the fluctuation is normal.
    Network Traffic (Input) netin The total inbound traffic of the compute node in the instance. Unit: kbit/s. Inbound network traffic is generated when a data node returns data to the compute node.
    Network Traffic (Output) netout The total outbound traffic of the compute node in the instance. Unit: kbit/s. Outbound network traffic is generated when the compute node sends physical SQL statements to the data node or the compute node returns data to applications.
    Logical QPS lqps The total number of SQL statements that are processed by the instance per second.
    Logical RT lrt The average response time (RT) for processing each SQL statement by the instance.
    The front-end connections con The total number of connections established between an application and the instance.
    Number of active threads active The number of threads that are used to execute SQL statements in the instance.
    Note You can customize the interval at which data is collected for the preceding metrics. You can view the performance data generated within a maximum of seven days.
    • View the performance data of your instance: In the upper-right corner of the Instance tab, specify the time range within which the performance data that you want to view is collected and click OK.
    • View the performance data of a node: Click the Node tab. On the Nodes tab, select the node whose performance data you want to view from the drop-down list next to the Set alarm rules button, specify the time range within which the performance data that you want to view is collected, and then click OK.
    • View the performance data of your cluster: Click the Cluster tab. On the Clusters tab, specify the time range within which the performance data that you want to view is collected and click OK.