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KVM

142
173
+ 1
8
Qemu

77
100
+ 1
4
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KVM vs Qemu: What are the differences?

What is KVM? Kernel-based Virtual Machine is a full virtualization solution for Linux. KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V).

What is 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..

KVM and Qemu can be primarily classified as "Virtualization Platform" tools.

According to the StackShare community, KVM has a broader approval, being mentioned in 16 company stacks & 21 developers stacks; compared to Qemu, which is listed in 4 company stacks and 6 developer stacks.

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Pros of KVM
Pros of Qemu
  • 4
    No license issues
  • 2
    Very fast
  • 2
    Flexible network options
  • 1
    A
  • 1
    Performance
  • 1
    Easy to use
  • 1
    Free

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What is KVM?

KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V).

What is Qemu?

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.

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What companies use KVM?
What companies use Qemu?
See which teams inside your own company are using KVM or Qemu.
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What tools integrate with KVM?
What tools integrate with Qemu?

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What are some alternatives to KVM and Qemu?
VirtualBox
VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 2.
OpenVZ
Virtuozzo leverages OpenVZ as its core of a virtualization solution offered by Virtuozzo company. Virtuozzo is optimized for hosters and offers hypervisor (VMs in addition to containers), distributed cloud storage, dedicated support, management tools, and easy installation.
Xen
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.
Docker
The Docker Platform is the industry-leading container platform for continuous, high-velocity innovation, enabling organizations to seamlessly build and share any application — from legacy to what comes next — and securely run them anywhere
LXC
LXC is a userspace interface for the Linux kernel containment features. Through a powerful API and simple tools, it lets Linux users easily create and manage system or application containers.
See all alternatives