From nobody Mon Feb 9 04:13:59 2026 Received: from mail-dl1-f73.google.com (mail-dl1-f73.google.com [74.125.82.73]) (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 39ADA36604D for ; Tue, 27 Jan 2026 18:45:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769539553; cv=none; b=tN92iLRwx5iwAth1aHUf9IVIOiCUjnRI6keND4h1RCDkTJB7pylcQlKl8txyS+PbJ0ARepRt6OcjqObrGI58Yu94JMxYTY3iPRMJZXruUs4AtU3Zod/IdreJC1A4C/uKN4V31sGq3ZK4aeuO+XnnrNzDsCWOJetdHsoK4gZJJ8I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769539553; c=relaxed/simple; bh=4pM2tdD652IcZD8wzPhrvfuqgRtHqz0V8U/ipI7rM2A=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=Cp1Rv+UTI3e3Z5ggTG5XNfjp5hAouS0W0Do2vjLAGiHxXJ4BMk2csp7kemjUirJkJvMtu59waii+Mg+7vgvdm2TrcRh2axpP3Fk+/Y32Dc8VNAEPjsg41zLTT6Yw7y/nEHUwkmZrHO40Hgy9+jxI0TAWMZzi16P4v+BNfdy38zo= 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=xx9+0cpc; arc=none smtp.client-ip=74.125.82.73 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="xx9+0cpc" Received: by mail-dl1-f73.google.com with SMTP id a92af1059eb24-12339eea50bso4655039c88.1 for ; Tue, 27 Jan 2026 10:45:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1769539551; x=1770144351; 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=L4BlKuWwvBoHJMjQiget3mJt2hAfQGaEdqNx0fF+IWg=; b=xx9+0cpcybFvuLWoQT8RRfDhgaNlnOkwxZQjO50hEE6pDmLeqlT2hkHpJ3PDAQ4GXK EdSCFRp+CzQdcypJ3CPdQ9+SVHGbkiJlrIv6pchsbgiT/dCchGFPhKgRp/uXwPfA/o/A byiX9xc077ZWjDZG2KBwyeVpECV8arW/tNEJ7Zs+K5k3X3QKLSXijzybu8wtPzFNAeMY SuZ9j9JSwM7P57ZZ8eYZ9wS/Smiy9nVA5ZwhbQRUXotPZXNCJYtOTPochASkQnmfEQ5Q 95ZV6GSZun4q684XZjbrUBCPwXuVmn46O+uJ4dZaSSl20nymbIUgPrUTeKQDvPseoc5M glQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769539551; x=1770144351; 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=L4BlKuWwvBoHJMjQiget3mJt2hAfQGaEdqNx0fF+IWg=; b=MxQ314h/yE4sFbWRUjrYv0fFRKjgIr96yk+zlJNDtFIAxHbOh89AglV9ogDo4q4egc c1hmqSnwhDJfOjNNReBIt37khnDvW5gOitkXOTIvXYHjoOw3WcAPrp3MnXknbXj7Eer6 UXm3aLQLH0sY9PQh02Shb48C67hp8h8CpQA4xY8wq9+YBdfwWaJXU3N9TZVxs+uZ2G+0 Dl6CdPvkIIBqZPGJjs1SfgfanJapJGL29gTthTaZN3Ma/cnOQ9hnih8HcFdHgcIwgYVL p7ge2RS6+tQnHsm0DVVjzAQyqryxAO86XkyouxIBEw/cjPsP6Et/tkX1VoLQjzSQgxfp t1WA== X-Forwarded-Encrypted: i=1; AJvYcCWOO3IeSr4/L6UkAXwlZLq6a9Zt0CTvVT+/aWnQ+8g8iVNqoEB1HYf904Ia38aUEB7ORMirYME8U8sgn5I=@vger.kernel.org X-Gm-Message-State: AOJu0Yz5Mxe9QQ3nHPeK3GFylVHUE020G5sdXT0H7rDqVQikRRsg7M2e gaZVV0t5VQPn2PzRF5Wc4IDsZuvK1MiCJShE0pVy+qM4PSzvsjPsBvBaxCwCsNE9v65t+pd2lE9 aksQLuiej1Q== X-Received: from dlbro6.prod.google.com ([2002:a05:7022:1586:b0:120:56a0:1dd9]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7022:7a4:b0:11b:ceee:b78a with SMTP id a92af1059eb24-124a00aaff5mr1435298c88.19.1769539551401; Tue, 27 Jan 2026 10:45:51 -0800 (PST) Date: Tue, 27 Jan 2026 10:44:44 -0800 In-Reply-To: <20260127184506.3059493-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260127184506.3059493-1-irogers@google.com> X-Mailer: git-send-email 2.52.0.457.g6b5491de43-goog Message-ID: <20260127184506.3059493-14-irogers@google.com> Subject: [PATCH v11 13/35] perf jevents: Add idle metric for Intel models From: Ian Rogers To: Adrian Hunter , Alexander Shishkin , Arnaldo Carvalho de Melo , Benjamin Gray , Caleb Biggers , Edward Baker , Ian Rogers , Ingo Molnar , James Clark , Jing Zhang , Jiri Olsa , John Garry , Leo Yan , Namhyung Kim , Perry Taylor , Peter Zijlstra , Sandipan Das , Thomas Falcon , Weilin Wang , Xu Yang , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org 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. Tested-by: Thomas Falcon 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 61778deedfff..0cb7a38ad238 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -3,14 +3,25 @@ import argparse import math import os -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) =20 # Global command line arguments. _args =3D None interval_sec =3D Event("duration_time") =20 =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 = state (C1 or deeper sleep state)", + d_ratio(low, tsc), "100%") + + def Rapl() -> MetricGroup: """Processor power consumption estimate. =20 @@ -70,6 +81,7 @@ def main() -> None: LoadEvents(directory) =20 all_metrics =3D MetricGroup("", [ + Idle(), Rapl(), ]) =20 --=20 2.52.0.457.g6b5491de43-goog