RE: [PATCH v13 00/32] x86,fs/resctrl telemetry monitoring

Luck, Tony
2025-11-17T16:52:19Z

> > On Intel systems that support per-RMID telemetry monitoring each logical
> > processor keeps a local count for various events. When the
> > MSR_IA32_PQR_ASSOC.RMID value for the logical processor changes (or when a
> > two millisecond counter expires) these event counts are transmitted to
> > an event aggregator on the same package as the processor together with
> > the current RMID value. The event counters are reset to zero to begin
> > counting again.
>
> Do you have any suggestion of which Xeon parts I should be looking for
> if I want to try out this feature?
>
> I'm looking at bare metal hosting providers for an Intel server that I
> can try out features like SNC and this. I look up the parts on ARK but
> it shows yes/no for RDT which is not very specific. I'm hoping to do
> something better than just hoping cpuinfo has what I want once the
> machine is provisioned :)
>

Drew,

Telemetry monitoring based on RMIDs is only present on Clearwater Forest
systems today. Those haven't been released into the wild yet.

-Tony