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Sun, 16 Nov 2025 09:35:09 -0800 (PST) Date: Sun, 16 Nov 2025 09:35:07 -0800 From: Drew Fustini To: Tony Luck Cc: Fenghua Yu , Reinette Chatre , Maciej Wieczor-Retman , Peter Newman , James Morse , Babu Moger , Drew Fustini , Dave Martin , Chen Yu , x86@kernel.org, linux-kernel@vger.kernel.org, patches@lists.linux.dev Subject: Re: [PATCH v13 00/32] x86,fs/resctrl telemetry monitoring Message-ID: References: <20251029162118.40604-1-tony.luck@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251029162118.40604-1-tony.luck@intel.com> On Wed, Oct 29, 2025 at 09:20:43AM -0700, Tony Luck wrote: > Patches based on v6.18-rc3 [snip] > > Background > ---------- > 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 :) Thanks, Drew