From nobody Tue Dec 9 03:42:37 2025 Received: from mail-pf1-f201.google.com (mail-pf1-f201.google.com [209.85.210.201]) (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 ED6FC3093C0 for ; Thu, 13 Nov 2025 03:21:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763004087; cv=none; b=LOqxNNBpigMI4/yV/SoFccA4RsVUP/riyCzXkqYeidFzA1MER4IDa4cdDik+9XgHZvwJcWPTMuYV0FVmWbREWedm7l0qn8jf1aggqp1+eDZHO+CSHsbaHC9TVW6Hot58bK0Yh8/TZ6cWc2lbEDctbFMod4GVzhuxdfIpcByQ2dE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763004087; c=relaxed/simple; bh=tPaHLz6/sx/PNrouhhyClDy1OLIFmrT7WhjKHR7NKag=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=c/NeSyjwXBQlturzrq05OoJ2IAxHEm19jGmH8bhCgO+yX6z09BUALn5vyEdmOkeeeVvCygL2uTUIJyrbKCg3lxURtAKFAtWFbO3v4TboiXBoNE4wbuWQZRTJmwO4WOoAtfvSRTCSkykgLzgmtUO5aWLr1LeQFcb8OzXvLe9B2Ok= 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=uk02rAYq; arc=none smtp.client-ip=209.85.210.201 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="uk02rAYq" Received: by mail-pf1-f201.google.com with SMTP id d2e1a72fcca58-7aa440465a1so724333b3a.1 for ; Wed, 12 Nov 2025 19:21:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1763004085; x=1763608885; 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=IsMM9QEsECyOcBMHtXCKN3W3Gqp+i9lInQz4MeIZgto=; b=uk02rAYqTV/oLM8BV565k+ESpMtIjEscnr53EmHpB7IcIwkgu2Ahz5KqoK7KpvYf7I 2QlI+hxKrrluSRit9aLlKmTm0GAwcVAQM2iB8kw4IM/DrwJu/Y3RiRgyLnowHrSxK/lm KunvPdrSMNA/J+IPXciTrk9+UX+NX6nM9E2IRZq+2JHj94ZdyM0ZFDQOXbyfHgnQTjiL 57J2uT0sbO2SkaGBOE7hsP2avzMXyD4fJbh42OLZSikldT9tyuql81hsMAzUDC6Sh5bB fcZ9Nok4e6y0Cq85ob2ZxYnjvq1kq0eSdHf4tz9AGrfUJ6SUUktoT/Fa7zHgWEaqqU1B wNHw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763004085; x=1763608885; 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=IsMM9QEsECyOcBMHtXCKN3W3Gqp+i9lInQz4MeIZgto=; b=EQDvfTSjJ9cMi8GcKjKH+L0pus9LpkFXZzah+23SCt6PDNbfCSEcAlPTNUryjiS12X OjSd/vHb28T1+N/Z/WGclEr9ZV38WGxX+m/6pSjd/Mc8ZHOEtxORhzpqeHj1D1hlh3rx 5BP/J7vGv6FVJaql8lzWy9l83dibKZTVIlTekZIEb9YyqfU2DkYOGGB3Qev6Afmzifpm +FLvAtx0+pkWrKjdyXqSbb394aadWAxbgUYby5C7XOtq0fDNgNdxOLtPMlJABR0Eg5Il pqELvJlnOQeilUJ7FG1ICWHWpCXiOYszEe0yNrZHixvsWJMqTDVYkBWbInnkGmnHyma7 S/QA== X-Forwarded-Encrypted: i=1; AJvYcCUVwfNJVPVuetHeUNHrykET4GzySJe+dsgxA14pZ5Nom2Bgnaf+BkPETMX/SOwqqMICgDJwELivuZqSIOk=@vger.kernel.org X-Gm-Message-State: AOJu0Yx7C4LBbW6c89oFKs0oiqcIcuwDjVeS0H47TDGhSAMccYGcJaMR oHO2R2LEfLWWCNpXWT2+HkqlwofT58FIBUNlTW7u2P+gWxwEeuLHVb4C8WsqLy9rqkzZz4Ye/Dd 9pAl5WUx48A== X-Google-Smtp-Source: AGHT+IES3t7VXixdqeqHO/Do+uvYp9CnzR3bamBcvHkXUs5IlqTBbD1sPeuUjAt8+AMfG8wD09hHje3Ql05G X-Received: from dyx20.prod.google.com ([2002:a05:693c:8214:b0:2a4:6312:d053]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:1611:b0:33f:9581:5d2f with SMTP id adf61e73a8af0-3590897fcd7mr7693689637.3.1763004085140; Wed, 12 Nov 2025 19:21:25 -0800 (PST) Date: Wed, 12 Nov 2025 19:20:04 -0800 In-Reply-To: <20251113032040.1994090-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251113032040.1994090-1-irogers@google.com> X-Mailer: git-send-email 2.51.2.1041.gc1ab5b90ca-goog Message-ID: <20251113032040.1994090-17-irogers@google.com> Subject: [PATCH v8 16/52] perf jevents: Add idle metric for AMD zen 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. Signed-off-by: Ian Rogers --- tools/perf/pmu-events/amd_metrics.py | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/a= md_metrics.py index b6cdeb4f09fe..f51a044b8005 100755 --- a/tools/perf/pmu-events/amd_metrics.py +++ b/tools/perf/pmu-events/amd_metrics.py @@ -3,8 +3,9 @@ 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 @@ -12,6 +13,16 @@ _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 socket power consumption estimate. =20 @@ -57,6 +68,7 @@ def main() -> None: LoadEvents(directory) =20 all_metrics =3D MetricGroup("", [ + Idle(), Rapl(), ]) =20 --=20 2.51.2.1041.gc1ab5b90ca-goog