From nobody Thu Sep 18 05:35:26 2025 Received: from mail-pf1-f202.google.com (mail-pf1-f202.google.com [209.85.210.202]) (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 98E2423A99E for ; Thu, 4 Sep 2025 04:47:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756961223; cv=none; b=JWY9irKNOwhBwJrvJcp1uWyw9jLAX2caixkXAEGNcz+P6mc5hjKs8gZR/MlQO4IVwebLLN+tYS0nTtL/zMQwFRBrJapts/UI9+nAtIgR855Nzs7BK9GX4x91UibxvF6r1nayHBnH9AhV2rDSNuIdvWWtUYYldrS7gWI+cWkxo7Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756961223; c=relaxed/simple; bh=Bkq0mEwyXQ6KgmslSqy7aU0tGebrGoz4a1iyDBPBJuA=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=MIjKTfGx8oPvSnID7WfeBZaGnyaf49dRShsF2JR0GAIKRP9XxEjBexxWPysNZTp7EOsWgPkGVH1Aj7+guYlzrAfvrEU7+qlfro4q6RXiLq3nfzZIDsZ4KfBpNl/427NJL3yYNv9Fjo0C8nHiwObW1/xIMOD5D3Gp6Glh4i/rR3U= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=gaPWGZUE; arc=none smtp.client-ip=209.85.210.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="gaPWGZUE" Received: by mail-pf1-f202.google.com with SMTP id d2e1a72fcca58-76e2ea9366aso634242b3a.2 for ; Wed, 03 Sep 2025 21:47:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1756961221; x=1757566021; darn=vger.kernel.org; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=y2MJ+/IfzyDNHViP3eQerYoyIt/1MlYkuZoI1bdvxsA=; b=gaPWGZUExL9BQGrRS5iFpRoJNn6EYEnonsF//RA2B6HQxR91MbfLKoxoAmNNX2XD4A nU7IRfk80rvceK6pCFTM3Jm8MDbLnBE81rkDsfB0pgPIqyxn2TKXco5u1DN0DBY0Yuz4 0S8b2hzdQNqzfgHt0ZoqsrdHKtVOg4yFaQtW64ogeVePVD5ob648+MyGtKv1r1X7CXAv /w2O3m0ACIR2qXf/huvlljUqlMEVirg7U5cpAsqpKY0bLzgu9sX36jlxxZziVu+EMIsk BT2suanySt+Lqcjxbry+aSCuo6ZRsYAUxOWpKkPlr9omRcf1/L+WyHssQNy2EaRT4Psk 0Itw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756961221; x=1757566021; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=y2MJ+/IfzyDNHViP3eQerYoyIt/1MlYkuZoI1bdvxsA=; b=TD1G6MXJF2IvTRSk7Lanj2qMLhOPkQjCXDfZ+yLs6eRRUqDhg56XbbIRX8D2oBvmGM ofoS//6/UkQinEEMQMlrXVKM/5DwPQjzQI3ebOcEvbEE5f+IBiYWX0/sV1DRpU4V5a5g +e03p1yJ9ZzPThVKhvdioEQB1oV51bEBiq4Pg9i3VwPqmCFDxMq9M/g+dbK5/XpOF38i tNgy+YJuBjhXr+htjIXYJ78TFsXfdThhpFMEgbBo8hDeReXVlR0zl1eyDE2h9tBEjG3T aX5/smeizKfEys8AnFsc+Lt+KnAgg26MHhV6l81G5H7kuTU2TkADDOH1WOOee4eIYBAo dI+g== X-Forwarded-Encrypted: i=1; AJvYcCUsB2Smt0Of9VO/iRN3SwFVX0QwrxIc8Eu/YTYrRx/NQjCU8H5ytZJZdUSKd5UXbk9bxM4x/runrH+fVAI=@vger.kernel.org X-Gm-Message-State: AOJu0YyCpcXmVft0hdyG86HZOxMqZvpEcEu8c7VJeIZAVsuGUwV+S7cp mfPVmc45ZS1kb3u9id5JAGh7m1k0Br1UChNeoCuibmvfMK3ruR2ezaMVVGJbSsg/zn0y32PLK/O IwzdWEUik1Q== X-Google-Smtp-Source: AGHT+IGm1h1Hef8FmLY8P3Oeo2u6tfpj8k/+uBKI4OWZ3/iy2YSJWyDiB9FlVKWsgXWt9sewhDb6CtA0/pEc X-Received: from pjss23.prod.google.com ([2002:a17:90a:1c17:b0:329:6cd6:660a]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a21:6d9a:b0:240:356:f06e with SMTP id adf61e73a8af0-243d6bca04cmr24044808637.0.1756961220929; Wed, 03 Sep 2025 21:47:00 -0700 (PDT) Date: Wed, 3 Sep 2025 21:46:33 -0700 In-Reply-To: <20250904044653.1002362-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250904044653.1002362-1-irogers@google.com> X-Mailer: git-send-email 2.51.0.338.gd7d06c2dae-goog Message-ID: <20250904044653.1002362-3-irogers@google.com> Subject: [PATCH v6 02/22] perf jevents: Add idle metric for Intel models From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , James Clark , Xu Yang , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, John Garry , Jing Zhang , Sandipan Das , Benjamin Gray , Perry Taylor , Samantha Alt , Caleb Biggers , Weilin Wang , Edward Baker , Thomas Falcon Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Compute using the msr PMU the percentage of wallclock cycles where the CPUs are in a low power state. Signed-off-by: Ian Rogers --- tools/perf/pmu-events/intel_metrics.py | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events= /intel_metrics.py index 1de3c2b2187e..b6d92e935c59 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -1,7 +1,8 @@ #!/usr/bin/env python3 # SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) -from metric import (d_ratio, has_event, Event, JsonEncodeMetric, JsonEncod= eMetricGroupDescriptions, - LoadEvents, Metric, MetricGroup, Select) +from metric import (d_ratio, has_event, max, Event, JsonEncodeMetric, + JsonEncodeMetricGroupDescriptions, LoadEvents, Metric, + MetricGroup, Select) import argparse import json import math @@ -11,6 +12,16 @@ import os _args =3D None interval_sec =3D Event("duration_time") =20 +def Idle() -> Metric: + cyc =3D Event("msr/mperf/") + tsc =3D Event("msr/tsc/") + low =3D max(tsc - cyc, 0) + return Metric( + "lpm_idle", + "Percentage of total wallclock cycles where CPUs are in low power st= ate (C1 or deeper sleep state)", + d_ratio(low, tsc), "100%") + + def Rapl() -> MetricGroup: """Processor power consumption estimate. =20 @@ -68,6 +79,7 @@ def main() -> None: LoadEvents(directory) =20 all_metrics =3D MetricGroup("", [ + Idle(), Rapl(), ]) =20 --=20 2.51.0.338.gd7d06c2dae-goog