>>> On 18.05.16 at 16:39, <ml...@posteo.de> wrote: > 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.
We've added support for newer features where suitable, over the years. When reasonable I've also tried to put these into the 2.6.18 tree. But from all I can tell right now this isn't going to happen any further. > So the question was: from an architectural > point of view should pvops in recent vanilla kernels be "better" then > xenified kernels? Hence it's hard to answer this question, the more that I can't even prove (or disprove) what you've said regarding its performance having been better in the past. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
