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AJvYcCXn6xsv+AUso7G/zYLRe5GMSJzaLgxM71SImFmvCAb/W3ANg0F1IMGe0953D7W/oqzlYYPh6ExsFIFr1uqY+Q73kPsGIq+DFfsxu3iS X-Gm-Message-State: AOJu0Yz+oquCZFuY7Qx988NQsJTrZRkBK4MUnjwxb1CrQzM1msxRTgGa 8GeDnXkPB14exlkDWzMWELg8AATNSg6VH0oEaEp31r25mQ+j/jZnUNOXDzoBc2zf4+UxPLKqJPI adUXRRg== X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:77dc:144c:334e:e2dd]) (user=irogers job=sendgmr) by 2002:a81:4c17:0:b0:609:2455:da6 with SMTP id z23-20020a814c17000000b0060924550da6mr154107ywa.5.1709165929121; Wed, 28 Feb 2024 16:18:49 -0800 (PST) Date: Wed, 28 Feb 2024 16:17:56 -0800 In-Reply-To: <20240229001806.4158429-1-irogers@google.com> Message-Id: <20240229001806.4158429-12-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240229001806.4158429-1-irogers@google.com> X-Mailer: git-send-email 2.44.0.278.ge034bb2e1d-goog Subject: [PATCH v1 11/20] perf jevents: Add context switch metrics for Intel From: Ian Rogers To: Perry Taylor , Samantha Alt , Caleb Biggers , Weilin Wang , Edward Baker , Andi Kleen , 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: 1792190603858841927 X-GMAIL-MSGID: 1792190603858841927 Metrics break down context switches for different kinds of instruction. Signed-off-by: Ian Rogers --- tools/perf/pmu-events/intel_metrics.py | 55 ++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events/intel_metrics.py index 0ca72aeec1ea..6ee708e84863 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -271,6 +271,60 @@ def IntelBr(): description="breakdown of retired branch instructions") +def IntelCtxSw() -> MetricGroup: + cs = Event("context\-switches") + metrics = [ + Metric("cs_rate", "Context switches per second", d_ratio(cs, interval_sec), "ctxsw/s") + ] + + ev = Event("instructions") + metrics.append(Metric("cs_instr", "Instructions per context switch", + d_ratio(ev, cs), "instr/cs")) + + ev = Event("cycles") + metrics.append(Metric("cs_cycles", "Cycles per context switch", + d_ratio(ev, cs), "cycles/cs")) + + try: + ev = Event("MEM_INST_RETIRED.ALL_LOADS", "MEM_UOPS_RETIRED.ALL_LOADS") + metrics.append(Metric("cs_loads", "Loads per context switch", + d_ratio(ev, cs), "loads/cs")) + except: + pass + + try: + ev = Event("MEM_INST_RETIRED.ALL_STORES", "MEM_UOPS_RETIRED.ALL_STORES") + metrics.append(Metric("cs_stores", "Stores per context switch", + d_ratio(ev, cs), "stores/cs")) + except: + pass + + try: + ev = Event("BR_INST_RETIRED.NEAR_TAKEN", "BR_INST_RETIRED.TAKEN_JCC") + metrics.append(Metric("cs_br_taken", "Branches taken per context switch", + d_ratio(ev, cs), "br_taken/cs")) + except: + pass + + try: + l2_misses = (Event("L2_RQSTS.DEMAND_DATA_RD_MISS") + + Event("L2_RQSTS.RFO_MISS") + + Event("L2_RQSTS.CODE_RD_MISS")) + try: + l2_misses += Event("L2_RQSTS.HWPF_MISS", "L2_RQSTS.L2_PF_MISS", "L2_RQSTS.PF_MISS") + except: + pass + + metrics.append(Metric("cs_l2_misses", "L2 misses per context switch", + d_ratio(l2_misses, cs), "l2_misses/cs")) + except: + pass + + return MetricGroup("cs", metrics, + description = ("Number of context switches per second, instructions " + "retired & core cycles between context switches")) + + def IntelIlp() -> MetricGroup: tsc = Event("msr/tsc/") c0 = Event("msr/mperf/") @@ -632,6 +686,7 @@ all_metrics = MetricGroup("", [ Smi(), Tsx(), IntelBr(), + IntelCtxSw(), IntelIlp(), IntelL2(), IntelLdSt(),