[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [PATCH][RFC][0/2] x86 SMP: enables core-pair topology detection for AMD CPUs
On Mon, 2011-06-27 at 18:26 +0100, Wei Huang wrote: > Thanks, Jan and George. I attach the latest version which fixes the > indentation issues. Assuming the patch has the same effect on the scheduling, my previous ack-effects-on-the-schedulers stands: Acked-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx> > > -Wei > > > On 06/27/2011 03:58 AM, Jan Beulich wrote: > >>>> On 24.06.11 at 00:51, Wei Huang<wei.huang2@xxxxxxx> wrote: > >> Hi, > >> > >> The following two patches enable core-pair topology detection for AMD > >> CPUs. The main idea is to record compute unit information into > >> cpuinfo_x86 and use it when building sibling map. The sibling map will > >> be used by Xen credit scheduler to coordinate VCPU scheduling in a > >> fashion similar to SMT. This code is very similar to upstream Linux kernel. > >> > >> Regarding the performance improvement, I saw ~8% improvement running > >> kernel compilation on Dom0 with this patch. Anrea Przywara ran a POVRay > >> benchmark using this patch and he saw ~5% improvement. No perf > >> degradation was seen so far. > >> > >> Please review. > > Apart from some indentation issues these look fine to me. > > > > Jan > > > >> Thanks, > >> -Wei > > > > > > > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |