The virt-manager tool provides different profiles depending on what operating system type and version are selected for a new guest virtual machine. When creating a guest, you should provide as many details as possible; this can improve performance by enabling features available for your specific type of guest.
Refer to the following example screen capture of the virt-manager tool. When creating a new guest virtual machine, always specify your intended OS type and Version:
Figure 3.1. Provide the OS type and Version
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