What to use for linux virtual machine

At work, we often need to use different software on different platforms. At this time, a virtual machine is a necessity. The more common ones on Linux include kvm, Xen, virtualbox, vmware workstation, etc.

kvm

Kernel-based Virtual Machine is an open source virtualization based on the kernel, integrated after Linux2.6.20 in every major release. KVM virtualization requires hardware support (such as Intel VT technology or AMD V technology). It is a complete virtualization based on hardware. In 2008, a Red Hat spokesperson said that KVM has better manageability and higher performance than Xen. Therefore, RHEL6 and later versions support KVM by default and abandon Xen.

Xen

Xen is an open source virtual machine monitor developed by the University of Cambridge. Xen achieves high performance through a technology called paravirtualization (less performance loss, about 2% in typical cases, 8% in worst cases; completely different from other uses) In stark contrast to other solutions (virtualization causes up to 20% loss), Xen also performs extremely well even on some architectures (x86) that are extremely unfriendly to traditional virtualization technology. However, the operation of Xen is more complicated and the maintenance cost is relatively high. Windows virtual machines are not supported.

VirtualBox

VirtualBox is an open source virtual machine software. VirtualBox is a software developed by the German company Innotek and produced by Sun Microsystems. It is written in Qt. After Sun was acquired by Oracle, it was officially renamed Oracle VM VirtualBox. VirtualBox is known as the most powerful free virtual machine software. It not only has rich features, but also has excellent performance! VirtualBox is rewritten from qemu and contains a lot of qemu code. Can be used on CPUs that do not support virtualization. One thing worth mentioning: VirtualBox is better at graphics and can accelerate 2D and 3D. There is an independent graphical interface for operation, which is easy to use. But the control of the CPU is not very good, and it is more suitable for virtual machines with desktop needs.

VMware Workstation

VMware Workstation is a powerful desktop virtual computer software that allows users to run different operating systems on a single desktop at the same time, and perform The best solution for developing, testing, and deploying new applications. VMware Workstation can simulate a complete network environment on a physical machine and a portable virtual machine. Its better flexibility and advanced technology surpass other virtual computer software on the market. For enterprise IT developers and system administrators, VMware's features such as virtual networking, real-time snapshots, drag-and-drop shared folders, and PXE support make it an indispensable tool. Charge, charge, charge, say important things three times.

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