From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f181.google.com (mail-pf1-f181.google.com [209.85.210.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2754A22D9ED for ; Sun, 16 Nov 2025 17:35:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.181 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763314512; cv=none; b=s7CcCbEAqeQTOVvp8LikR8oEdnd75FhelTRg2aAKvtSyzmuMz/z1odOcx/jSdrHfwVrakoGzW3NoSknZ42PZqA8ZP7uzNRsnGjdgIGu849kjOVarS8JqwxP16ukHef8C//27ZAmxIW4DNm40/NQtxI1Y5Kn6bQcJFsKjjX0NALk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763314512; c=relaxed/simple; bh=AiR7OWq5QjeEgBUIqgeKnAZ6M4zzo1z1vhctNrbqZf8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=iGQWof0j5n+ftV04poffoGzMjQFPZtzLy3OohWcZw6P912dDE0MRIaiB6LCff4VQQAWcrFHwVWErRm5dBMvN4zHe/92i3uGWi5+X4ER5JwBk2BxQmq0YG7UM+qNl0BXd4spTVE4eZBjXyaQpwZFpDQohKt3HTF7hhh8RtVZqtEA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=m8vxQBrZ; arc=none smtp.client-ip=209.85.210.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="m8vxQBrZ" Received: by mail-pf1-f181.google.com with SMTP id d2e1a72fcca58-7bf0ad0cb87so421355b3a.2 for ; Sun, 16 Nov 2025 09:35:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1763314510; x=1763919310; darn=lists.linux.dev; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=iZr69Y/IYH+8F2xEe3zTPCB4P+4tO2XHZu6fh52qnG0=; b=m8vxQBrZnUoSTo19ezq9xqcYFQdtUssgt6aOUiM0oNpm2jYxPJrCTRqAGBaQZt7Ctm 6hRZG0jLFAr2Si+XGy0jrjwos0pVn92lcNI1YRhSv9wM4EJYjjPQ8sAH7J3F8dLg8xon EUdW91c0AUwo0+ApzNtRJQgpQ4zr7N6QaqUkrH6WZI68H98iFF2PU21wcWGKgqDuVLP+ Ve2Rz/Z+Ea6YcOrPp8k+9z2Q/0uo7/cStMRUmD5REuEaWCG+w++SNu8jBe7wKTONGZsp Jfh7DxITAW8aeCrvKdpj9hEhvYBZ+92q4qKsVBvmdsBEDOJ16g9gjlbJtWt+oX3RXWoB WabQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763314510; x=1763919310; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=iZr69Y/IYH+8F2xEe3zTPCB4P+4tO2XHZu6fh52qnG0=; b=kJ9EbmMFiy9iQMDfgR3V6keachYDcxUCWZDo3Y7L3L7TlrSErItMKCalyF52czg5QL ndXD89sptfNejZK6HdfkeN9QtI6iMvEslFnkVQA0uledPoT6abiTt+qoKZ4rfpclLIPj w5H1p4e3nM03NS7DuzHEUJU0tseawTeG53zfrgkvtZBnPU/hMlFODHl/XVTiUL8WX/XC 1Ey503F2aUFhBYAvfbcK9OFyhEr2YGvLLw5wqjoGvvmLakAbwS6W+5oZc+r1Q5HnGXS+ uhNkMwecHlG9P81OXBDPxxckMs6NwUyETZjRcKAOU/hQ3tn5d71kgwWEDRNNuRGgkYJz SIGA== X-Forwarded-Encrypted: i=1; AJvYcCVF71/fGmVJghf7W5WaLeo02g75mMv2Xqu7iU3dtAIfSXNvN5MbhwpE9qNU2/G9lGIov1ne5RNn@lists.linux.dev X-Gm-Message-State: AOJu0YxpCshOwBOLFUQRRQtvv5A6mV08ig17aP2JbxJdQ3MGge8LptGa Xi9CqVHyfbBeGWOpdrhdczWA4eoBEBXAq8cUbp5ChSYxOJJyJBo3nqf5 X-Gm-Gg: ASbGncvorFu8QXS3G/0/w+NBd4FIcTFSFudfPOW5UmUczacy4u42RUtaZR8igZwOJzX SxVG9ctS0/Z5l0RB2GqDFoZV9jFh7Z5QimaLEGF0Kl44OHJLI0/sL+YDpEqgJmnQf9fcYY4tTe8 UXTwyDB1HKJYACj+V8NEEk0IK3ms8MFY6ivR8TeZOTphcX8aIDvvebuWoTvHX4hJbxoKwb41Exg l6hICt/21rQGEvPI6DT2NqH1VTi3458q+ZzEJ/kkpICrMOl8BFezmwDhyIL2oR7JHS4ljpzY/X9 I2bZSP/IYPlxDIYn4a/1sJhsQNlLFqRq6rTMnPJHKZu6r820wx6qhhx6ufudHyCbiQljeBjjkxk Kj9ju0p/f6lOhqanWYV+cofulOBedXQbzExBi5NPOqUWRqhOx8liJN+5ujNPCb3GH7ZHpV+M= X-Google-Smtp-Source: AGHT+IHZx+LWvH3AN1QAO1ITLruzr3q4nEqQXQ6Wi4v007TJw/jpt/Bn24++1pcywXys8MEofPX8Zg== X-Received: by 2002:a05:6a21:9991:b0:35d:cc9a:8bc2 with SMTP id adf61e73a8af0-35dcc9a8deemr4612188637.31.1763314510342; Sun, 16 Nov 2025 09:35:10 -0800 (PST) Received: from x1 ([184.3.238.16]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-bc375081bf8sm9973615a12.24.2025.11.16.09.35.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); 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: patches@lists.linux.dev 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