From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (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 A59A8183CB6 for ; Thu, 26 Sep 2024 17:51:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727373062; cv=none; b=Rwm5sNGZaLz+SPk8qW0p9S36R1Ci/U6mKe9DLjAC3PbXwy4dgR72VaI2IHBrJcgIF397Yr+GlPvnBvs3m2Sc33jFUQfz41t8Aa+PPHnUtvQhJGq1K8hsNvT3VPFrGJg8PKpvleNznYrlJpREugbnBanXtdItWxwzG+0FiKGj3Y8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727373062; c=relaxed/simple; bh=WRG26UolNI3eAQ1/IExBOEAbZGEqObSefqeahUG4NTo=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=iKBgvtOq2A/YNfv2XPy05JOAuCJ3ls/UpCqIkPSM/u+2MSdIdyz9toPKPpEIXiSstwTcL/NmarJTlVwZm/U/zsj0X2bpU3FJ4Zs2Cs7q3Wdzji9NFvfEUlJtANqKEmwXj1vPEmGLajjsaSBcL4SlY20gBPnYAJLdLIy0aBrO54Q= 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=RLYe09xZ; arc=none smtp.client-ip=209.85.219.201 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="RLYe09xZ" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-e1d10fde51cso2111706276.1 for ; Thu, 26 Sep 2024 10:51:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1727373060; x=1727977860; 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=EOPZJZE57IMCcyt+nGiK9z91olZDkPDca+05FDhUtQc=; b=RLYe09xZhlAvSJPPrRQzpK0TYjKsTxNryVf6ybw0+IWanm6kDq+nYiqgMaZvQrUjnV JcQ5bPjXvuy0rQw3W0OVAdDqOm6JWRDt60fTbftjdyphAcRIlt18rYROS4Q0yzMqELQT sLKDZmDdxP4DI66uHVq8fNwS+d9zFNvzSt2IK6LFcSgjJ0O5hXIUiPxUje/A6K210D96 Jn6pSH+xtijgXPqLxhuHrlvNss4IOYLgzLGt+bQKnYTTLoh7y6h+whBD/1QA3awpUxTX HC1wzCdXgnBR/To/0OqR8jKJoEA9Y8pU/Wl+hv48k/sJ98ngeGlDVMaCxk+Ahy5b4PzI Qf9A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1727373060; x=1727977860; 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=EOPZJZE57IMCcyt+nGiK9z91olZDkPDca+05FDhUtQc=; b=r+/pDA990pFqCagidxqkrh34pqP6HHDRPT5zi7Bj9VBofny9h94VBhUN2qmmqb84sF RbaFvlcJTZkmGXk1mQTxXsy2AM+ch72+CTaqXv95my7/eGy5s9A17Sxs09CBq+Yj/NBZ CJoWa08SVCbBknOyJSu51e9PfA6dISdNA0coUDcLJbwGKiD90G5CXr9mSLo80GUcFVKF DweyB11VqFlYn97XeBCEEqJ/79EbeQ2iDqz0JzW9+IeRuGIK56vv9Z80N0Qyhl4Zzy1W AqjEvKNultbISLl9gU1LEfi8sHYO7Wbbda3WqYL90dNLgbdc2pc0j1frOB40oLah2j/S MsoA== X-Forwarded-Encrypted: i=1; AJvYcCUj2vhvmyx5Y2BsqXPfxb1WSokGlKU6sgSdYUTBe8FSjYnAafdAcjaeIJtIwbvl2907qb5L0IGfRcilNQJ0KfDz@vger.kernel.org X-Gm-Message-State: AOJu0YxYIX4s84EGlInhhCSc7V5UZeK8B4hpXJa2F1aVaIS9e8TyfXt1 +VOZx+Tz415NOO1nDjE02RogWdOwYq1DHxMvUYS2s9lo+ujiM8v/vHqSWfd7/wEiVAUh+Q5qiWc xXk4VEA== X-Google-Smtp-Source: AGHT+IEJwjm+BcnpbRABaB1e+69eKV4Gk4sVgTf582woRm14JxLYKLCfSPWRX8bFjucXwLrcGBwJa++4jDOf X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:8872:3585:18ed:a056]) (user=irogers job=sendgmr) by 2002:a05:6902:1363:b0:e0b:fe07:1e22 with SMTP id 3f1490d57ef6-e2604b109cdmr221276.1.1727373059729; Thu, 26 Sep 2024 10:50:59 -0700 (PDT) Date: Thu, 26 Sep 2024 10:50:20 -0700 In-Reply-To: <20240926175035.408668-1-irogers@google.com> Message-Id: <20240926175035.408668-8-irogers@google.com> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240926175035.408668-1-irogers@google.com> X-Mailer: git-send-email 2.46.1.824.gd892dcdcdd-goog Subject: [PATCH v4 07/22] perf jevents: Add br metric group for branch statistics on Intel From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Perry Taylor , Samantha Alt , Caleb Biggers , Weilin Wang , Edward Baker 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. Conditional taken and not taken metrics are specific to Icelake and later generations, so the presence of the event is used to determine whether the metric should exist. Signed-off-by: Ian Rogers --- tools/perf/pmu-events/intel_metrics.py | 138 +++++++++++++++++++++++++ 1 file changed, 138 insertions(+) diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events/intel_metrics.py index 58e243695f0a..09f7b7159e7c 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -123,6 +123,143 @@ def Tsx() -> Optional[MetricGroup]: ], description="Breakdown of transactional memory statistics") +def IntelBr(): + ins = Event("instructions") + + def Total() -> MetricGroup: + br_all = Event ("BR_INST_RETIRED.ALL_BRANCHES", "BR_INST_RETIRED.ANY") + br_m_all = Event("BR_MISP_RETIRED.ALL_BRANCHES", + "BR_INST_RETIRED.MISPRED", + "BR_MISP_EXEC.ANY") + br_clr = None + try: + br_clr = Event("BACLEARS.ANY", "BACLEARS.ALL") + except: + pass + + br_r = d_ratio(br_all, interval_sec) + ins_r = d_ratio(ins, br_all) + misp_r = d_ratio(br_m_all, br_all) + clr_r = 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 instrucions.", + misp_r, "100%"), + Metric("br_total_insn_between_branches", + "The number of instructions divided by the number of branches.", + 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 = Event("BR_INST_RETIRED.ALL_BRANCHES", "BR_INST_RETIRED.ANY") + br_m_tk = None + try: + br_m_tk = Event("BR_MISP_RETIRED.NEAR_TAKEN", + "BR_MISP_RETIRED.TAKEN_JCC", + "BR_INST_RETIRED.MISPRED_TAKEN") + except: + pass + br_r = d_ratio(br_all, interval_sec) + ins_r = d_ratio(ins, br_all) + misp_r = 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 branches.", + ins_r, "insn"), + ]) + + def Conditional() -> Optional[MetricGroup]: + try: + br_cond = Event("BR_INST_RETIRED.COND", + "BR_INST_RETIRED.CONDITIONAL", + "BR_INST_RETIRED.TAKEN_JCC") + br_m_cond = Event("BR_MISP_RETIRED.COND", + "BR_MISP_RETIRED.CONDITIONAL", + "BR_MISP_RETIRED.TAKEN_JCC") + except: + return None + + br_cond_nt = None + br_m_cond_nt = None + try: + br_cond_nt = Event("BR_INST_RETIRED.COND_NTAKEN") + br_m_cond_nt = Event("BR_MISP_RETIRED.COND_NTAKEN") + except: + pass + br_r = d_ratio(br_cond, interval_sec) + ins_r = d_ratio(ins, br_cond) + misp_r = d_ratio(br_m_cond, br_cond) + taken_metrics = [ + 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 conditional " + "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 = d_ratio(br_cond_nt, interval_sec) + ins_r = d_ratio(ins, br_cond_nt) + misp_r = d_ratio(br_m_cond_nt, br_cond_nt) + + not_taken_metrics = [ + Metric("br_cond_retired", "Retired conditional not taken branch instructions.", + br_r, "insn/s"), + Metric("br_cond_insn_between_branches", + "The number of instructions divided by the number of not taken conditional " + "branches.", ins_r, "insn"), + Metric("br_cond_mispred", + "Retired not taken conditional branch instructions mispredicted 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 = Event("BR_INST_RETIRED.FAR_BRANCH") + except: + return None + + br_r = d_ratio(br_far, interval_sec) + ins_r = 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 branches.", + ins_r, "insn"), + ]) + + return MetricGroup("br", [Total(), Taken(), Conditional(), Far()], + description="breakdown of retired branch instructions") + + def main() -> None: global _args @@ -150,6 +287,7 @@ def main() -> None: Rapl(), Smi(), Tsx(), + IntelBr(), ]) -- 2.46.1.824.gd892dcdcdd-goog