Virtualization Scenario Cache Topology Awareness

In an Arm-based virtual machine (VM) environment, a group of preset values are displayed by default when you view the cache size. These default values cannot accurately reflect the actual cache size used by the VM. In this case, the optimization of applications and OSs in the VM may be affected. To solve this problem, this feature provides a method of specifying the cache size in the VM XML configuration of libvirt or the QEMU command for starting VMs. By using this feature, the size of the cache used by a VM can be accurately reflected, and more accurate cache structure information is available for further optimizing the application performance in the VM.