Performance tab in XenCenter provides real time
monitoring of performance statistics across resource pools as well as graphical
trending of virtual and physical machine performance.
You can view up
to 12 months of performance data and zoom in to take a closer look at activity
spikes. To learn more, see
graphs showing CPU, memory, network I/O and disk I/O are displayed on the tab.
However, you can add more performance data and change the appearance of the
graphs. To learn more, see
alerts can be generated when CPU, memory usage, network, storage throughput, or
VM disk activity go over a specified threshold on a managed server, virtual
machine, or storage repository. For more information, see
Note: Full performance
data is only available for virtual machines with the XenServer paravirtualized
drivers (XenServer Tools) installed.