From nobody Mon Feb 9 12:01:17 2026 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (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 5AB2D42A8C for ; Thu, 29 Feb 2024 00:18:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709165918; cv=none; b=NUX25ArFumhksiDVitD/pVF4DDPIksIUJ0qJpG4NYvEp212e1LWBkrv+kcwfjiY3FKST8GlsArd7Ijnf2BZa3Xjq+Jc8lMdlqqRVFFuF2m41dQseglV4QCnyvzv9v5vAZ/vI3uIMkUICwsPeyOs2Y++noLSDNU3vQUvYtDqnDjY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709165918; c=relaxed/simple; bh=lh38C2ZP3x0TtmsYtzGGwnk35I03kkxZ3DF9a2lkNs8=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=vB6mvWELGcoeeJZAjTX8OLIBa6TQ8SsAey89C+j3rNsDMSAldDO7rEvykt2OToxFX8qqfZYrXww8crm1upTdkRgHMRyeQ18/QLmv8erTfOPNscP6QuqZN0tsr07RNMoQWScQZQFoF9BZDlbbYwiSXjszqff0m9EIhPaUlAkCmV0= 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=Dq/cFuI9; arc=none smtp.client-ip=209.85.128.202 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="Dq/cFuI9" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-607c9677a91so5912027b3.2 for ; Wed, 28 Feb 2024 16:18:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1709165915; x=1709770715; 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=FFlMx+oNasYCjHbkgyCsRQrkyODw2CbaRmUxLrBz57E=; b=Dq/cFuI9y/evbZOWtKeVWlsfNbNE9w3FhYKZadsSug9L9f0TjF580XkGR40LmE7jZc jwxCSzBX/J0tMtW2NMxy7iUZVkQo/CMiT7S3+xMngLxNQc4k2dfE5pu95Y3fH/Te4Ev9 wmojcVo4zt+NZtwWllb+suCNpJ8SlMbCincehbrfdCXuuXsvDBXGp6CMPERNE32SRzpz wqXxj3tgYkbZ3T+9hiZo14PyocJ4BSjD2Krt2+RwViQdVkPK6W/xRv4h0uWD5hHYcVei MwLm3GuZUiS5SfufhahY/INLH44vbuJGluD8cnoK44IsxEcDqBmvGsT7GOERkX/Ec5as V86Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709165915; x=1709770715; 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=FFlMx+oNasYCjHbkgyCsRQrkyODw2CbaRmUxLrBz57E=; b=cgpJnbjX+QfqQsOMSPdfw3aKr3VOp0KOcEZnpFofsPKu2m8HOcoBfXL7xRJsZeUlIK EBglAGy/I110Yqtpog9vXTREo7IMXYUvtrIbuIeJONdCRxA6+JkaHsHb/HU4s8lm+cuF LQtXeQBihz6tehncYpoggXyVWPOO9uf0NGmVUkF4LuZPllvzRxHywIvrVBevUKu3TrQn QL0a3w/m1Rn9LNkc9x8HQ4J1+cJRZnLfunJDI/crItn99GmBak5LEdjZk8ELkQXgTge5 KleM1jRmNW9wu7KXf8H4tJRE3MwZrlwdxldLZuSi9RArIwkt5j6+c8g+pkDPY93fdUn6 YBSw== X-Forwarded-Encrypted: i=1; AJvYcCWrdiCPc/taFlFXP5XSqZdxZ3gS72ePlCBiMMZTqJo+T8Tga/te8TFulphoWHctLpKeeHJwJuA6ZTRfvrH3BN1bVUFzQO7KXMg2Qc2I X-Gm-Message-State: AOJu0YwYZeZqbmJ7N4v+F+6VWfY/1gcZn2j8AOne6AUg02l53tipQpXy C3hpqfcD/oulVJH0y9iDqAY6Dp1Gw9UbfPMOZPB2lN0/SBVHRfsPxltAsfSceJ1eUjqhTTlxgQA 3r/Zu/w== X-Google-Smtp-Source: AGHT+IHC14oTBO4GDCo83r7qwcuz2rr/yMZTII/RSuGhoXST3N7hzinHTtQb1DAHe/57G8TxacAvrF1Xu+jQ X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:77dc:144c:334e:e2dd]) (user=irogers job=sendgmr) by 2002:a81:9849:0:b0:609:3c46:1889 with SMTP id p70-20020a819849000000b006093c461889mr145864ywg.7.1709165915657; Wed, 28 Feb 2024 16:18:35 -0800 (PST) Date: Wed, 28 Feb 2024 16:17:50 -0800 In-Reply-To: <20240229001806.4158429-1-irogers@google.com> Message-Id: <20240229001806.4158429-6-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 05/20] perf jevents: Add br metric group for branch statistics on 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 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The br metric group for branches itself comprises metric groups for total, taken, conditional, fused and far metric groups using json events. Condtional taken and not taken metrics are specific to Icelake and later generations, so a model to generation look up is added. Signed-off-by: Ian Rogers --- tools/perf/pmu-events/intel_metrics.py | 139 +++++++++++++++++++++++++ 1 file changed, 139 insertions(+) diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events= /intel_metrics.py index 1096accea2aa..bee5da19d19d 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -19,6 +19,7 @@ LoadEvents(directory) =20 interval_sec =3D Event("duration_time") =20 + def Idle() -> Metric: cyc =3D Event("msr/mperf/") tsc =3D Event("msr/tsc/") @@ -127,11 +128,149 @@ def Tsx() -> Optional[MetricGroup]: return MetricGroup('transaction', metrics) =20 =20 +def IntelBr(): + ins =3D Event("instructions") + + def Total() -> MetricGroup: + br_all =3D Event ("BR_INST_RETIRED.ALL_BRANCHES", "BR_INST_RETIRED.ANY= ") + br_m_all =3D Event("BR_MISP_RETIRED.ALL_BRANCHES", + "BR_INST_RETIRED.MISPRED", + "BR_MISP_EXEC.ANY") + br_clr =3D None + try: + br_clr =3D Event("BACLEARS.ANY", "BACLEARS.ALL") + except: + pass + + br_r =3D d_ratio(br_all, interval_sec) + ins_r =3D d_ratio(ins, br_all) + misp_r =3D d_ratio(br_m_all, br_all) + clr_r =3D d_ratio(br_clr, interval_sec) if br_clr else None + + return MetricGroup("br_total", [ + Metric("br_total_retired", + "The number of branch instructions retired per second.", br= _r, + "insn/s"), + Metric( + "br_total_mispred", + "The number of branch instructions retired, of any type, that = were " + "not correctly predicted as a percentage of all branch instruc= ions.", + misp_r, "100%"), + Metric("br_total_insn_between_branches", + "The number of instructions divided by the number of branch= es.", + ins_r, "insn"), + Metric("br_total_insn_fe_resteers", + "The number of resync branches per second.", clr_r, "req/s" + ) if clr_r else None + ]) + + def Taken() -> MetricGroup: + br_all =3D Event("BR_INST_RETIRED.ALL_BRANCHES", "BR_INST_RETIRED.ANY") + br_m_tk =3D None + try: + br_m_tk =3D Event("BR_MISP_RETIRED.NEAR_TAKEN", + "BR_MISP_RETIRED.TAKEN_JCC", + "BR_INST_RETIRED.MISPRED_TAKEN") + except: + pass + br_r =3D d_ratio(br_all, interval_sec) + ins_r =3D d_ratio(ins, br_all) + misp_r =3D d_ratio(br_m_tk, br_all) if br_m_tk else None + return MetricGroup("br_taken", [ + Metric("br_taken_retired", + "The number of taken branches that were retired per second.= ", + br_r, "insn/s"), + Metric( + "br_taken_mispred", + "The number of retired taken branch instructions that were " + "mispredicted as a percentage of all taken branches.", misp_r, + "100%") if misp_r else None, + Metric( + "br_taken_insn_between_branches", + "The number of instructions divided by the number of taken bra= nches.", + ins_r, "insn"), + ]) + + def Conditional() -> Optional[MetricGroup]: + try: + br_cond =3D Event("BR_INST_RETIRED.COND", + "BR_INST_RETIRED.CONDITIONAL", + "BR_INST_RETIRED.TAKEN_JCC") + br_m_cond =3D Event("BR_MISP_RETIRED.COND", + "BR_MISP_RETIRED.CONDITIONAL", + "BR_MISP_RETIRED.TAKEN_JCC") + except: + return None + + br_cond_nt =3D None + br_m_cond_nt =3D None + try: + br_cond_nt =3D Event("BR_INST_RETIRED.COND_NTAKEN") + br_m_cond_nt =3D Event("BR_MISP_RETIRED.COND_NTAKEN") + except: + pass + br_r =3D d_ratio(br_cond, interval_sec) + ins_r =3D d_ratio(ins, br_cond) + misp_r =3D d_ratio(br_m_cond, br_cond) + taken_metrics =3D [ + Metric("br_cond_retired", "Retired conditional branch instructions= .", + br_r, "insn/s"), + Metric("br_cond_insn_between_branches", + "The number of instructions divided by the number of condit= ional " + "branches.", ins_r, "insn"), + Metric("br_cond_mispred", + "Retired conditional branch instructions mispredicted as a " + "percentage of all conditional branches.", misp_r, "100%"), + ] + if not br_m_cond_nt: + return MetricGroup("br_cond", taken_metrics) + + br_r =3D d_ratio(br_cond_nt, interval_sec) + ins_r =3D d_ratio(ins, br_cond_nt) + misp_r =3D d_ratio(br_m_cond_nt, br_cond_nt) + + not_taken_metrics =3D [ + Metric("br_cond_retired", "Retired conditional not taken branch in= structions.", + br_r, "insn/s"), + Metric("br_cond_insn_between_branches", + "The number of instructions divided by the number of not ta= ken conditional " + "branches.", ins_r, "insn"), + Metric("br_cond_mispred", + "Retired not taken conditional branch instructions mispredi= cted as a " + "percentage of all not taken conditional branches.", misp_r= , "100%"), + ] + return MetricGroup("br_cond", [ + MetricGroup("br_cond_nt", not_taken_metrics), + MetricGroup("br_cond_tkn", taken_metrics), + ]) + + def Far() -> Optional[MetricGroup]: + try: + br_far =3D Event("BR_INST_RETIRED.FAR_BRANCH") + except: + return None + + br_r =3D d_ratio(br_far, interval_sec) + ins_r =3D d_ratio(ins, br_far) + return MetricGroup("br_far", [ + Metric("br_far_retired", "Retired far control transfers per second= .", + br_r, "insn/s"), + Metric( + "br_far_insn_between_branches", + "The number of instructions divided by the number of far branc= hes.", + ins_r, "insn"), + ]) + + return MetricGroup("br", [Total(), Taken(), Conditional(), Far()], + description=3D"breakdown of retired branch instructio= ns") + + all_metrics =3D MetricGroup("", [ Idle(), Rapl(), Smi(), Tsx(), + IntelBr(), ]) =20 if args.metricgroups: --=20 2.44.0.278.ge034bb2e1d-goog