From nobody Mon Feb 9 00:54:41 2026 Received: from mail-dy1-f202.google.com (mail-dy1-f202.google.com [74.125.82.202]) (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 5794F329E7D for ; Thu, 8 Jan 2026 19:11:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767899516; cv=none; b=X4LsZ4gs0zVMyOVc7Ch1ypfXytUZEQqmtu0kiew4wC7Dkrjpr+XMayaCbtGbw5Bej7sZ1C4HmPIDiPu3q5nur9Ptt51XPZeKI8FAf2mUkdOAidbfrKCCbVUCcbAKiYVa3kRGrk2qsnnethY0YUada0Nvt/RMRGtNi/SB0HdOU5Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767899516; c=relaxed/simple; bh=4pM2tdD652IcZD8wzPhrvfuqgRtHqz0V8U/ipI7rM2A=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=jqSYlKf6JKz723aEl2E0Mg4lRQe45cjFOwW6W4GGolnTb6g0r+c7yF0L9+/Zj8BWANs/gxP8gaWzM89mtgkxA4wFMihcTYjTOeGFrjQBTPxZYXhUbz51161KFa0CL1mz/q2+g4PC3Ds/h54oQTca2zBJVhNqzZ40jAn4C2gwKQ0= 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=iG/cq0kM; arc=none smtp.client-ip=74.125.82.202 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="iG/cq0kM" Received: by mail-dy1-f202.google.com with SMTP id 5a478bee46e88-2b0751d8de7so4237198eec.1 for ; Thu, 08 Jan 2026 11:11:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1767899511; x=1768504311; 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=iG/cq0kMgUx0Nbq+2jsDgsUJFVR6/R3hvmO/7eSuFJKAKouABrEgyHpdn1ioojyDqh fgHQmENIFBpxKolgytZDO3gJuPbzZBdBiLfx+6gk4UQqFdJSK75SGeGbmzHaBQHMBABJ uyTSOsm4Zhff8lAS0lpERfqykH4wiRaQfhec783HW9ZXcZU7Fv4LxqmU+0qRws3OYoeZ krBtIT+hJiJeeytgJsTtUY0HlMq2bj4iHWSLByWPQ71i2+Hf/W6N/AfbtnqIQM4jALSq o1nIK2uEkt8MWAVx+/T9v2cOdP5XdV+tLSfuNYeQKctJxlak+rjFQgAqL9kuXel/JmB5 hUzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767899511; x=1768504311; 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=vC3+I4Vt6AZ3GDlqofrwhUdvfAWU6ZrOSK8m7ARgMtFQVp2HkwgEU+ykb5QIud4c22 H1RTQGniA6TSpK7rEvCjpMrh0WrFf2tm/N16sSzCjTFcec3ww8LmbuN4ygmdZ+zR/eYd rV4Uj0j+3oCqeX/e1Hb4AcmRquGTGRd90yy6Bho1+SMMtko9rf8d6Ij1UDyr8vJprh9m NFBd59HyyQUYXGirnXFufLD2cagKADm/0vkQ6yr8msdFTPLPzgisDFQD7AMSzuCH1+zC 97RyKSIcasSIX7H1sdWk1ZgvVifyIDvmihjuGEMhVvgFMhYt1YxaCwwdGfUI8zButYB/ tD+A== X-Forwarded-Encrypted: i=1; AJvYcCXz5swWHebYSlVHu874yVNzuqsjQF9rc37pi2EWEireI+EXQFTdXHMqom+og0nd0faEwNKC1jkEV4N+/1g=@vger.kernel.org X-Gm-Message-State: AOJu0YxROcgZfnACpRo4War7p6RGW5EDUtDjWkfpZ1kawfFV7M2CmwXy GehHdN2NPyPkRArWEEd1XrHgre2Bv7AjItGTMqQ8nBSG2/ve7au5lYhqCHo73T5R9Y50pP9SgtY ImebJZv8fZA== X-Google-Smtp-Source: AGHT+IFBdZ9YGtBDf20j4auioQ8fS0JHTCtar4eY+lDnx8UdCh0olNr5kj0gIYkLSwrxUvuXTjL9a9JTc+3i X-Received: from dycrq5.prod.google.com ([2002:a05:693c:2c05:b0:2a6:a19b:9a22]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:693c:2583:b0:2b0:58aa:8852 with SMTP id 5a478bee46e88-2b17d2b0aa4mr4993331eec.22.1767899511325; Thu, 08 Jan 2026 11:11:51 -0800 (PST) Date: Thu, 8 Jan 2026 11:10:43 -0800 In-Reply-To: <20260108191105.695131-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260108191105.695131-1-irogers@google.com> X-Mailer: git-send-email 2.52.0.457.g6b5491de43-goog Message-ID: <20260108191105.695131-14-irogers@google.com> Subject: [PATCH v10 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 , Samantha Alt , 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