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xen-devel
[Xen-devel] Re: [PATCH][RFC][0/2] x86 SMP: enables core-pair topology de
>>> 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
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