# Performance Monitoring

Monitoring the system performance means monitoring the server and database information. You can monitor system performance by setting usage thresholds for all items of the server, to discover and rectify anomalies as soon as possible and optimize system operating.

#### Procedure

1. Choose System > Data Maintenance > Performance Monitoring.

   Ensure that the flash plug-in has been installed on the browser. Otherwise, the page cannot be displayed.

2. Set the usage thresholds for the server.
   1. Click in the Threshold Settings group box.
   2. The Modify Threshold page is displayed. Set the usage thresholds for the server on this page. Table 1 lists the default thresholds.

      Table 1 Default thresholds
      Parameter | Default Threshold
      --- | ---
      CPU usage threshold | 90%
      Memory usage threshold | 90%
      Disk usage threshold | 90%
      Database usage threshold | 90%

   3. Click OK.

      Return to the Performance Monitoring page when the threshold is modified successfully.

3. Monitor the server and database performance on the Performance Monitoring group box, as shown in Table 2.

   Table 2 Monitoring the server and database performance
   Parameter | Description
   --- | ---
   CPU | If the CPU usage has exceeded the threshold for three consecutive times, the ATIC Management center generates an alarm. When the CPU usage becomes lower than the threshold, the alarm is cleared automatically. The red line represents the threshold.
   Memory | If the memory usage has exceeded the threshold for three consecutive times, the ATIC Management center generates an alarm. When the memory usage becomes lower than the threshold, the alarm is cleared automatically. The red line represents the threshold.
   Disk | If the disk usage exceeds the threshold, the ATIC Management center generates an alarm. When the disk usage becomes lower than the threshold, the alarm is cleared automatically.
   Database | The database capacity will grow automatically with the data amount. In this case, you should check whether the used capacity is too large. Insufficient remaining disk spaces of the database will cause the improper operating of the database and ATIC Management center.

Parent topic: System Maintenance

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