# Multiple Nodes with Single Metric

Intelligent O&M allows you to view the performance of the same metric on multiple instances so that you can compare the metric performance.

#### Procedure

1. Log in to the GaussDB(for openGauss) console.
2. Apply for Intelligent O&M according to Intelligent O&M.
3. Locate your desired instance and click Details to go to the Intelligent O&M overview page.
4. Choose Performance > Multiple Nodes with Single Metric.
5. Click Select Node to select instances. A maximum of 5 instances can be selected, and the type of the selected instances must be the same.
6. Click Select Metric and select the instance metrics to display.

   Table 1 Instance metrics
   Category | Metric | Description
   --- | --- | ---
   CPU | CPU Usage | CPU usage of the monitored object (Unit: %)
   CPU Load | Average CPU load over the past 1, 5, and 15 minutes. The value is obtained using the w command.
   CPU Load in Past 1 Minute | Average CPU load over the past 1 minute. The value is obtained using the w command.
   Memory | Memory Usage | Memory usage of the monitored object (Unit: %)
   Available Memory | Memory available to the operating system (Unit: GB)
   Network | Data Transfer In | Average number of bytes sent by the VM of the monitored object in a measurement period (Unit: KB/s)
   Data Transfer Out | Average number of bytes received by the VM of the monitored object in a measurement period (Unit: KB/s)
   Other Metrics | - | -

7. Click OK.
8. Click Performance History and specify a time range in the upper right corner to view metric details in the past last 1 hour, 12 hours, 1 day, 2 days, or 7 days.
9. Click the Performance Trends Comparisons tab, select the desired metrics, and click OK.
10. View the metric details in a specified time range within the past week.
11. Click Full Screen for a clear view.

Parent topic: Performance