From nobody Mon Feb 9 05:59:43 2026 Received: from mail-yw1-f201.google.com (mail-yw1-f201.google.com [209.85.128.201]) (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 57D22171AB for ; Thu, 14 Mar 2024 06:00:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710396005; cv=none; b=h7UAQgUmLq+uWn8gio8UHFpTe1cIuSb6VwANrBqhS4m6nZ/Tjm8KwNcFt/hAnEHpABoqDb4E9KsLaNa1S4t5OZjYyj9j16JAlPQYzKTamsHa2Y757vCKKUFcsIMVnqdS+XC659yZAcfrkpQ4QEVR5LNqTP2ekvVvRNiS2Qcw2KQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710396005; c=relaxed/simple; bh=EoFQZBcR++BJQLNWKAmvS5P9iYM2cGSAT9IpU470kgI=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=VD9daeEHj78DyYBjZaMv9TgUuHPthpi97XKT3aUMUGJ5r1h04Na0202AgRbqd6uZwg/RKMkWZFrJdfThvbX07YlQr/GP24iAFr5hmfitvzRcQlhUohs9Y659IxbNm5kvZ+iUxAInQFHaot2WNEsDLP/hPIWOruU1WOZ+DpYoHPI= 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=WjW59jlT; arc=none smtp.client-ip=209.85.128.201 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="WjW59jlT" Received: by mail-yw1-f201.google.com with SMTP id 00721157ae682-60a61b31993so11547117b3.1 for ; Wed, 13 Mar 2024 23:00:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710396002; x=1711000802; darn=vger.kernel.org; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=V2Jgedq1NZZPPT1/Dtc3WDNIcL7gv577kczHEe0Db7I=; b=WjW59jlT/S+m5MRfXyMH1t2YBnAbv1z0kjwqTwag4v77T9TCZHfoeCMEVZQGHPwrGP lrt2AK/19rHkAEN7dEh0+xU00YxjCZzGnMzoMcVo//4XNG7YDgGGEEi6QQV1DL5SdLaB x0QrgUHC3stvxUsKmxqqFsOavz9X8sUsKN4KiLA9D8aeaiK2TtFZnNBAGOWIWYuf3+eI +zU8oM9rhVAH7LizTxpqkvfrxswpx2b/XNBgySJgPbL5fA3iqUawdo3wmkALu1lgi3Ay uT/09GBxu8+yZtBMx0HeK1iBm3W+it+Hpj2O/9nbq2/wukaFegZ/N2xqoYIv5P/PXHWL Gz3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710396002; x=1711000802; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=V2Jgedq1NZZPPT1/Dtc3WDNIcL7gv577kczHEe0Db7I=; b=AY/CJzFMIoipATuHk2rSVT+jaFyfYgEyyqr4gK2n+p6tTNVQVPjMwrM211luo2NyRu U4ULz8OE/3k8AfTlQaro6Wm5yL/EhIU0zeoB9UBUAK7aiB/y5KjSPmejFEjOJsUL8Ehv 51bTFT62hVKpzla7gfxQktu63IL1q0uRnyc/8gWzx614Q4mowhcunAOPFbexp2gEDfD7 iTe3PrbkB3HTYdE8f4VmDlqjMBCVQWIDEc2WyWkbm+NWmEyIYAO/WpxLlBOqmAJGpeGg YiXsKUWXpoYue/K2l8vWMSEuyxpmY54LUdVvS+XUXqQycCRdrYLz4fzkgo0YtMps6lVu PeSA== X-Forwarded-Encrypted: i=1; AJvYcCVqgqhN4yXen6t/BGjWQ7xFf4M5h95kOWMO2RBxKiMZpeh6dtcpIcrAXnU7O3iB+ErsOi8iWTCPDVa2xQMJ6Hb+UgHG554UcO11lItY X-Gm-Message-State: AOJu0YzLHFKJnJZWU4nJTGXSqPQdpDc+0IK1uTsWPbJTDY7ZNMuPWHmH dOypTW4YpOym8fxZSm7GVMgrHwx/qoQ4Fc0rtb409cx6/wQMWUCiKiqwFxcAtTILYFCQ7yEBoCj YiYV2DA== X-Google-Smtp-Source: AGHT+IFDQ+9xU0M+SjIFSslxASNCJrc5/k+6p6o3YihJ7av0y0N3jJIcNU/Crks/O9Qb/x+/ZtaBweQ5IYsJ X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:449f:3bde:a4cd:806a]) (user=irogers job=sendgmr) by 2002:a0d:d808:0:b0:60b:998c:389f with SMTP id a8-20020a0dd808000000b0060b998c389fmr179760ywe.10.1710396002262; Wed, 13 Mar 2024 23:00:02 -0700 (PDT) Date: Wed, 13 Mar 2024 22:59:11 -0700 In-Reply-To: <20240314055919.1979781-1-irogers@google.com> Message-Id: <20240314055919.1979781-13-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240314055919.1979781-1-irogers@google.com> X-Mailer: git-send-email 2.44.0.278.ge034bb2e1d-goog Subject: [PATCH v3 12/20] perf jevents: Add context switch metrics for Intel From: Ian Rogers To: Perry Taylor , Samantha Alt , Caleb Biggers , Weilin Wang , Edward Baker , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark , John Garry , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Stephane Eranian Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 d15f9ac05204..387981d58320 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -266,6 +266,60 @@ def IntelBr(): description=3D"breakdown of retired branch instructio= ns") =20 =20 +def IntelCtxSw() -> MetricGroup: + cs =3D Event("context\-switches") + metrics =3D [ + Metric("cs_rate", "Context switches per second", d_ratio(cs, interva= l_sec), "ctxsw/s") + ] + + ev =3D Event("instructions") + metrics.append(Metric("cs_instr", "Instructions per context switch", + d_ratio(ev, cs), "instr/cs")) + + ev =3D Event("cycles") + metrics.append(Metric("cs_cycles", "Cycles per context switch", + d_ratio(ev, cs), "cycles/cs")) + + try: + ev =3D 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 =3D Event("MEM_INST_RETIRED.ALL_STORES", "MEM_UOPS_RETIRED.ALL_STOR= ES") + metrics.append(Metric("cs_stores", "Stores per context switch", + d_ratio(ev, cs), "stores/cs")) + except: + pass + + try: + ev =3D Event("BR_INST_RETIRED.NEAR_TAKEN", "BR_INST_RETIRED.TAKEN_JCC") + metrics.append(Metric("cs_br_taken", "Branches taken per context switc= h", + d_ratio(ev, cs), "br_taken/cs")) + except: + pass + + try: + l2_misses =3D (Event("L2_RQSTS.DEMAND_DATA_RD_MISS") + + Event("L2_RQSTS.RFO_MISS") + + Event("L2_RQSTS.CODE_RD_MISS")) + try: + l2_misses +=3D Event("L2_RQSTS.HWPF_MISS", "L2_RQSTS.L2_PF_MISS", "L= 2_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 =3D ("Number of context switches per seco= nd, instructions " + "retired & core cycles between context= switches")) + + def IntelIlp() -> MetricGroup: tsc =3D Event("msr/tsc/") c0 =3D Event("msr/mperf/") @@ -648,6 +702,7 @@ def main() -> None: Smi(), Tsx(), IntelBr(), + IntelCtxSw(), IntelIlp(), IntelL2(), IntelLdSt(), --=20 2.44.0.278.ge034bb2e1d-goog