Recommended Configurations

Recommended Configurations

[Mark Bidewell]

With the increasing integration of KVM into Qemu, I was wondering what
the recommended configurations are for kernel and userspace  I see
several combinations:
1)  KVM-85 for both KVM and Qemu (kvm-85.tar.gz)
2) Official Qemu 0.10.4 with the KVM kernel module.
3) The Qemu KVM 0.10.4 listed on the KVM site.
Which is the best combination for use for maximum compatibility and performance?
Thanks
--
Mark Bidewell
http://www.linkedin.com/in/markbidewell

Re: Recommended Configurations

[Avi Kivity]

Mark Bidewell wrote:
> With the increasing integration of KVM into Qemu, I was wondering what
> the recommended configurations are for kernel and userspace  I see
> several combinations:
> 1)  KVM-85 for both KVM and Qemu (kvm-85.tar.gz)
> 2) Official Qemu 0.10.4 with the KVM kernel module.
> 3) The Qemu KVM 0.10.4 listed on the KVM site.
> Which is the best combination for use for maximum compatibility and performance?
> Thanks
>   

It depends on what you're looking for.  For laziness, use your distro 
provided kernel and kvm.  For stability, use kvm-kmod-2.6.30 (unreleased 
as yet).  For the latest and greatest, and for particiating in the 
development effort by testing use the kvm-xx releases.

Real men run for git though.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

Re: Recommended Configurations

[Avi Kivity]

Mark Bidewell wrote:
> With the increasing integration of KVM into Qemu, I was wondering what
> the recommended configurations are for kernel and userspace  I see
> several combinations:
> 1)  KVM-85 for both KVM and Qemu (kvm-85.tar.gz)
> 2) Official Qemu 0.10.4 with the KVM kernel module.
> 3) The Qemu KVM 0.10.4 listed on the KVM site.
> Which is the best combination for use for maximum compatibility and performance?
> Thanks
>   

It depends on what you're looking for.  For laziness, use your distro 
provided kernel and kvm.  For stability, use kvm-kmod-2.6.30 (unreleased 
as yet).  For the latest and greatest, and for particiating in the 
development effort by testing use the kvm-xx releases.

Real men run from git though.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

Re: Recommended Configurations

[Anthony Liguori]

Mark Bidewell wrote:
> With the increasing integration of KVM into Qemu, I was wondering what
> the recommended configurations are for kernel and userspace  I see
> several combinations:
> 1)  KVM-85 for both KVM and Qemu (kvm-85.tar.gz)
>   

This is basically a development snapshot.  I'd say that unless there's a 
feature in kvm-85 you care about, you're better sticking with 0.10.x.  
Of course, if you'd like to help test future kvm release, kvm-XX 
releases are a great way to help out.

> 2) Official Qemu 0.10.4 with the KVM kernel module.
>   

Officially, the QEMU 0.10.x series only has "experimental" KVM support.  
It's not as complete as what's found in linux-kvm.org.  If you're 
bleeding edge and really want to help out, this is a great place to do 
testing.

> 3) The Qemu KVM 0.10.4 listed on the KVM site.
>   

For now, this is probably the best thing to look at if you don't fit 
into any of the above categories.

Regards,

Anthony Liguori