Qemu vs Xen: What are the differences?
Qemu: A generic and open source machine emulator and virtualizer. When used as a machine emulator, it can run OSes and programs made for one machine (e.g. an ARM board) on a different machine (e.g. your own PC). By using dynamic translation, it achieves very good performance When used as a virtualizer, it achieves near native performance by executing the guest code directly on the host CPU. it supports virtualization when executing under the Xen hypervisor or using the KVM kernel module in Linux. When using KVM, it can virtualize x86, server and embedded PowerPC, 64-bit POWER, S390, 32-bit and 64-bit ARM, and MIPS guests.; Xen: Advancing virtualization in a number of different commercial and open source applications. It is a hypervisor using a microkernel design, providing services that allow multiple computer operating systems to execute on the same computer hardware concurrently. It was developed by the Linux Foundation and is supported by Intel.
Qemu and Xen can be categorized as "Virtualization Platform" tools.
Some of the features offered by Qemu are:
- machine emulator and virtualizer
- dynamic translation
On the other hand, Xen provides the following key features:
- Xen 4.10 or Newer
Xen is an open source tool with 208 GitHub stars and 152 GitHub forks. Here's a link to Xen's open source repository on GitHub.