Hi Tony, On Thu, Sep 28, 2023 at 9:14 PM Tony Luck <tony.luck@xxxxxxxxx> 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
