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Xen hypervisor vs OpenVZ [message #42349]

Tue, 05 April 2011 14:29

ckkashyap
Messages: 9
Registered: March 2011
Location: India

Junior Member

Hi,
I am trying to do benchmarking of performance in Xen VM and OpenVZ VM.
I went over the paper -
http://www.hpl.hp.com/techreports/2007/HPL-2007-59R1.pdf

What we are looking for from the "virtualization" solution is server
consolidation and we do not intend to run multiple kernels - so OpenVZ seems
like a good choice.
Are there more recent papers on such as the paper from HP?

Regards,
Kashyap

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Re: Xen hypervisor vs OpenVZ [message #42350 is a reply to message #42349]

Tue, 05 April 2011 15:08

Tim Small
Messages: 24
Registered: April 2011

Junior Member

On 05/04/11 15:29, C K Kashyap wrote:
> Hi,
> I am trying to do benchmarking of performance in Xen VM and OpenVZ VM.
> I went over the paper
> - http://www.hpl.hp.com/techreports/2007/HPL-2007-59R1.pdf
>
> What we are looking for from the "virtualization" solution is server
> consolidation and we do not intend to run multiple kernels - so OpenVZ
> seems like a good choice.
> Are there more recent papers on such as the paper from HP?
>

I don't know, but I would consider the real competition to be between
OpenVZ and libvirt/KVM - I don't think Xen is going anywhere in the long
term.

KVM supports the use of kernel-same-page-merging (KSM), which OpenVZ
doesn't (yet?). For some applications KSM can be a big win...

We currently use/support both OpenVZ and kvm.

Tim.

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Re: Xen hypervisor vs OpenVZ [message #42353 is a reply to message #42350]

Tue, 05 April 2011 16:40

ckkashyap
Messages: 9
Registered: March 2011
Location: India

Junior Member

>
> I don't know, but I would consider the real competition to be between
> OpenVZ and libvirt/KVM - I don't think Xen is going anywhere in the long
> term.
>
> KVM supports the use of kernel-same-page-merging (KSM), which OpenVZ
> doesn't (yet?). For some applications KSM can be a big win...
>
> We currently use/support both OpenVZ and kvm.
>
> Tim.
>
>
> Thanks Tim ... from a pure performance standpoint, I'd imagine that any
kind of emulation/virtualization would have an overhead which is more than
openvz . So, if the usecase does not involve running different kernels, then
openvz style partitioning of system resources would yield more performance.
I am looking for more evidence supporting that :)

Regards,
Kashyap

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Re: Xen hypervisor vs OpenVZ [message #42355 is a reply to message #42349]

Tue, 05 April 2011 16:54

Paparaciz
Messages: 302
Registered: August 2009

Senior Member

On Tue, Apr 5, 2011 at 17:29, C K Kashyap <ckkashyap@gmail.com> wrote:
> Hi,
> I am trying to do benchmarking of performance in Xen VM and OpenVZ VM.
> I went over the paper
> - http://www.hpl.hp.com/techreports/2007/HPL-2007-59R1.pdf
> What we are looking for from the "virtualization" solution is server
> consolidation and we do not intend to run multiple kernels - so OpenVZ seems
> like a good choice.
> Are there more recent papers on such as the paper from HP?
> Regards,
> Kashyap

http://wiki.openvz.org/Performance

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