QEMU emulates everything, including the CPU, so it is slower than the host system. It can even be used to host several virtual machines simultaneously on a single server (given enough host processor power and RAM).Īs QEMU requires no host kernel patches to run, it is safe and easy to use. This enables testing and debugging of system code in a contained (and quarantined) virtual system.
INSTALLING QEMU SYSTEM FULL
Full system emulation: QEMU can emulate a full system, including the processor and peripherals.User mode emulation: QEMU can launch individual Linux processes compiled for one CPU on another CPU.By using dynamic translation it achieves reasonable speed, while being easy to port to new host CPUs. The package currently supports arm, powerpc, sparc and x86 emulation. It manages virtual machines not only for QEMU, but also for kvm and xen, in a consistent fashion (through libvirt).
Running a virtual machine environment such as QEMU will slow down your computer noticeably.Īlso consider trying a QEMU interface, such as Qemulator, or the package qemu-launcher.Īnother QEMU GUI is virt-manager. If you need to run only a single Windows program, also consider using Wine instead of QEMU. Therefore, if you plan to use QEMU only to create a Windows virtual environment in order to run Windows programs, consider using one of several free Linux SoftwareEquivalents instead. You will therefore notice a decrease in performance of activities in both the host OS and the guest OS. Your memory resources will be divided between your native (host) OS and your virtual machine (guest) OS. The operating systems can be the same ones, or different. It allows you to run one operating system from within another operating system. QEMU creates a virtual machine, similar to VMWare, Virtualbox, KVM, and Xen.
Preparation of the QEMU virtual environment.