Re: [Xen-devel] state of xenified SUSE kernel

[Andreas Kinzler <ml-ak@xxxxxxxxx>]

On 17.05.2016 17:34, Jan Beulich wrote:
> > We use xenified kernels based on kernel 3.4 for years and benchmarks
> > showed that they are faster than the pvops (vanilla) kernels.
> > But what is the current state in terms of performance and features?
> I'm not sure what you expect here. Up to openSUSE 42.1 and
> SLE 12 SP1 they are fully maintained, i.e. you can get quite a
> bit newer than 3.4 based kernels. There's not a lot of
> performance analysis that I would be aware of, so I can't
> answer that part anyway. And them being release branches
> rather than development ones, there's not going to be any
> new feature work.
As far as I know the patches are based on the original work for kernel 
2.6.18 and have not been adjusted to major changes in Xen architecture. 
So what I am thinking about is performance improvements that result from 
using newer Xen features. So the question was: from an architectural 
point of view should pvops in recent vanilla kernels be "better" then 
xenified kernels?
Regards Andreas

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