content_image/969287.jpg content_image/969291.jpg
The graph for CPU utilization shows the CPU utilization over time distinguished between system and user usage. 

Click the legend to the right of the graph on the words system  or user  to limit the display to that part of the CPU usage. Click the legend again, to show the full graph again. 

## Appliance Used Memory 

<img src='content_image/969287.jpg'>

This graph shows the memory usage of the zCX instance. 

## Appliance Network Traffic 

The Network Traffic tile shows the amount of data that is sent and received over the network by the zCX instance. If you hover over the graph, it shows the numeric values for the point in time where your mouse is located, as shown in Figure 7-19. 

<img src='content_image/969291.jpg'>

Because of the way Grafana formats this graph, sent bytes are shown as negative values. Actually, they are positive values. 

