Active 2 years, 4 months ago. Viewed 68k times. What is faster on the same hardware, Xen or KVM? I'm trying to pick-up a virtualization technology to work, which gives the best performance. Any idea on the subject? Improve this question. Peter Mortensen 2, 5 5 gold badges 23 23 silver badges 24 24 bronze badges. SyRenity SyRenity 3, 11 11 gold badges 54 54 silver badges 79 79 bronze badges.
What is the point of having virtualization if you only have on VM? It is definitely type-1, and it is definitely closer to the hardware than Xen is. So yes, given the exact same conditions, KVM should perform better, especially with the modern virtIO drivers — dyasny. KVM vs Xen landscape is very different now. Add a comment. Active Oldest Votes. Improve this answer. Axel Latvala 4 4 silver badges 12 12 bronze badges.
Any idea if same will hold in future? As Redhat 5. I can't make any predictions on what the future holds. But neither of these platforms are going to disappear. Only time will tell how this one plays out. But I wouldn't worry about having to change in 6 months.
Maybe in a few years there will be a clear leader in the opensource virtualization platforms. I'm guessing from your post that Xen isn't going to be much better. Which was just completed. So in the coming weeks I may be able to look closer at KVM. So I'm not sure if moving to KVM will help.
In this case the capabilities are provided by a combination of the KVM kernel modules and the Qemu userspace code. Show 3 more comments. Michael Shaw Michael Shaw 4 4 silver badges 9 9 bronze badges. Vmware server IO performance is very, very bad. If you have to go vmware use esx. You will find very interesting information on the subject in the following presentation: Quantitative Comparison of Xen and KVM The person who did this is a Xen expert, but the comparison seems pretty fair.
Antoine Benkemoun Antoine Benkemoun 7, 3 3 gold badges 40 40 silver badges 60 60 bronze badges. But reading this numbers virt. Any idea where is the truth? I believe my presentation seems more realistic. It runs more then one VM at at time. The testing protocol seems closer to reality. Xen seem to have better isolation. If you sell a lot of Windows-based cloud servers, there are probably more advantages to hosting on Xen because of the near native drivers.
In future blogs, I hope to provide some benchmarks to illustrate some of these performance differences. Click to learn more about the OnApp cloud management platform! My blog implied that we do include it for Xen — apologies for that. Hypervisor Choice. Xen or KVM? Commercial versions of Xen also exist. Being a Type 1 hypervisor, Xen can be lodged directly on hardware of the computer without any requirement of a host operating system.
Xen supports Windows and Linux operating systems. Xen software is customizable because it has a unique structure getting virtualization everywhere. XenServer is the first choice for hyper scale clouds of the industry like Alibaba, Amazon and Oracle Cloud and IBM Softlayer as it is easy to use with a flexible structure. An approach of detection and multilayered protection is used which makes Xen a secure option for usage.
This hypervisor partitions the memory and also provides controlled execution for each virtual machine since the processing environment is commonly shared. This virtual solution is available in bit hypervisor platform.
Xen runs three virtual machines. A guest operating system and applications are run on each virtual machine thereby splitting the resources. A Linux inherent technology specifically converts Linux into a hypervisor that enables the host computer to operate a number of independent virtual systems also recognized as Virtual machines or guests.
Initially disclosed in , it merged with the mainline Linux kernel versions the following year. This open source virtual solution benefits from up to date features of Linux without the need of any additional skilful arrangement.
All these components are contained by KVM since it is a part of Linux kernel.
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