Messages in this thread | | | From | Peter Newman <> | Date | Fri, 29 Sep 2023 16:33:17 +0200 | Subject | Re: [PATCH v6 0/8] Add support for Sub-NUMA cluster (SNC) systems |
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Hi Tony,
On Thu, Sep 28, 2023 at 9:14 PM Tony Luck <tony.luck@intel.com> wrote: > > The Sub-NUMA cluster feature on some Intel processors partitions > the CPUs that share an L3 cache into two or more sets. This plays > havoc with the Resource Director Technology (RDT) monitoring features. > Prior to this patch Intel has advised that SNC and RDT are incompatible. > > Some of these CPU support an MSR that can partition the RMID > counters in the same way. This allows for monitoring features > to be used (with the caveat that memory accesses between different > SNC NUMA nodes may still not be counted accuratlely.
Is an "SNC NUMA node" a "sub-NUMA node", or a NUMA node on which SNC has been enabled?
Thanks! -Peter
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