The Performance dashboard displays statistics about the Index Server nodes for the time interval that you select.
Information
| 
 Name  | 
 Description  | 
|---|---|
| 
 Memory Usage  | 
 A chart that displays the amount of main memory and heap memory used.  | 
| 
 Index Details  | 
 A chart that displays the number of transient cores, loaded cores, and unloaded cores.  | 
| 
 Index Directory Drive Space  | 
 A chart that displays the amount of total space and free space on the drive that contains the index directory.  | 
| 
 CPU Load  | 
 A chart that displays the percentage of CPU used.  | 
| 
 Update and Query Requests  | 
 A chart that displays the number of query operations and the number of update operations.  |