PolarDB:Monitor computing resources

Procedure

1. Log on to the PolarDB for Xscale console.
2. In the top navigation bar, select the region where the target instance is located.
3. On the Instances page, click the PolarDB-X 2.0 tab.
4. Find the target instance and click its ID.
5. In the left-side navigation pane, choose Monitoring and Alerting > Computing Resource Monitoring.
6. On the Computing Resource Monitoring page, you can view the performance data of your instances, nodes, or clusters.

   Metric	Description
   CPU	The average CPU utilization within a specified period of time.
   Average or logical response time	The average response time of logical requests (user requests).
   Physical response time	The average response time of physical requests that are sent to data nodes.
   Memory	The usage of Java virtual machine (JVM) heap memory as a percentage value.
   QPS or logical QPS	The number of user requests processed per second.
   TPS or logical TPS	The number of transactions processed per second.
   Physical QPS	The number of requests sent to data nodes processed per second.
   Logical slow SQL queries	indicates the number of logical slow SQL queries that are sent by users per second.
   Physical slow SQL queries	The number of physical slow SQL queries that are sent to data nodes per second.
   Network throughput
   Inbound network traffic	The total amount of inbound network traffic on the compute node. Unit: Kbit/s.
   Outbound network traffic	The total amount of outbound network traffic on the compute node. Unit: Kbit/s.
   Total number of sessions	The total number of sessions per second.
   Active sessions	The number of active sessions per second.
   Garbage collection time
   Young GC time	The time consumed by garbage collection (GC) in the young generation per second.
   Full GC time	The time consumed by full garbage collection (GC) per second.

   Note You can customize the interval at which data is collected for the preceding metrics. You can view the performance data generated within 30 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 your cluster: Click the Cluster tab. On the Cluster 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 Node tab, select the node whose performance data you want to view from the drop-down list, specify the time range within which the performance data that you want to view is collected, and then click OK.