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AJvYcCU2Q4ePzmfectBzfxxXxkTvV1nRoyTnTPNKyZtNxmaZlBAJ804kZPOzHtFgOj/zYTDc6YXX9Cbgu4mDUIA30E6EOsGpmobp0gMD0Bad X-Gm-Message-State: AOJu0Yxxo/pnaycWeQEubaakJyeI8pkyKmbkD4MuS7ek/2QFE+nVnLde ISQeJRGR/dnq0bHxVT6cKl6f+8oeBiGC+JxK128R+HWz/LBv9Ou4WAT58zK9mqHvC4tAkenwLr1 LSK2eAQ== X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:af4b:7fc1:b7be:fcb7]) (user=irogers job=sendgmr) by 2002:a25:2690:0:b0:dbd:73bd:e55a with SMTP id m138-20020a252690000000b00dbd73bde55amr91844ybm.4.1709318871487; Fri, 01 Mar 2024 10:47:51 -0800 (PST) Date: Fri, 1 Mar 2024 10:47:27 -0800 In-Reply-To: <20240301184737.2660108-1-irogers@google.com> Message-Id: <20240301184737.2660108-3-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240301184737.2660108-1-irogers@google.com> X-Mailer: git-send-email 2.44.0.278.ge034bb2e1d-goog Subject: [PATCH v2 02/12] perf jevents: Add idle metric for AMD zen models From: Ian Rogers To: Sandipan Das , Ravi Bangoria , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , John Garry , Kan Liang , Jing Zhang , Thomas Richter , James Clark , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Stephane Eranian X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1792350790985881287 X-GMAIL-MSGID: 1792350790985881287 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/amd_metrics.py index 4016ecee6464..fd3095cb5c1d 100755 --- a/tools/perf/pmu-events/amd_metrics.py +++ b/tools/perf/pmu-events/amd_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, JsonEncodeMetricGroupDescriptions, - 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 @@ -19,6 +20,16 @@ all_metrics = MetricGroup("",[]) interval_sec = Event("duration_time") +def Idle() -> Metric: + cyc = Event("msr/mperf/") + tsc = Event("msr/tsc/") + low = max(tsc - cyc, 0) + return Metric( + "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. @@ -39,6 +50,7 @@ def Rapl() -> MetricGroup: description="Processor socket power consumption estimates") all_metrics = MetricGroup("", [ + Idle(), Rapl(), ])