Performance alerts can be generated when CPU, memory usage, network, storage throughput, or VM disk activity exceeds a specified threshold on a managed server, virtual machine, or storage repository. By default, the alert repeat interval is set to 60 minutes, and it can be modified if required.
Performance alerts will appear in the System Alerts window (accessed by clicking on System Alerts at the top right corner of the XenCenter window). In addition, you can have performance alerts emailed to you along with other serious system alerts: see XenCenter system alerts.
To configure performance alerts: