Re: [KVM] ANNOUNCE: new kvm userspace release

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Jeff Carr wrote:
> On 11/09/06 07:23, Avi Kivity wrote:
>   
>> Changes:
>>   - much easier to get running, see updated HOWTO
>>   - now just one download, get yours while supplies last
>>   - single qemu binary for kvm and non-kvm runs (Anthony Liguori)
>>   - accompanying external kernel module package has all bugfixes folded 
>> in (plus a bit of cosmetics)
>>
>> http://kvm.sourceforge.net
>>
>>     
>
> The patch you put up on Nov 2 was a really easy to work with. Nicely
> done! I installed it here and it ran successfully. It booted a windows
> 2003 server image successfully. I attached a screenshot.
>
>   

Thanks for the success report.  It makes a welcome change from the bug 
reports :)

> Time runs at about half speed inside a linux guest.
>   

Hmm.  What are the guest's and host's CONFIG_HZ?

> Between qemu+kvm and just qemu (on the same hardware) there doesn't
> seem to be an obvious difference in speed. I didn't look around much
> more than just booting a few images so far; so that's all I'm basing
> that unscientific estimate on.
>   

It depends on the hardware.  We find that the Core 2s and the AMDs do 
very well.

The planned MMU optimization will improve the speed considerably.

> For me, this Nov 11 tarball is a lot harder to work with. For the
> kernel module, I can't tell by inspection what patches have been
> applied from the mailing list. For qemu, the whole qemu upstream is
> extracted in there so if I want to get a clean patch now I would have
> to guess which version to start will and make my own diff.
>   

The intent was to reduce the amount of downloading and compilation 
needed to make it work.  I guess one size does not fit all.

For the record, the modified qemu is based on Fedora's qemu-0.8.2 and 
the external kernel module is equvalent to all patches posted up to date 
plus a couple of cosmetic fixes.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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