From nobody Mon Feb 9 07:21:00 2026 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 C20113B29A for ; Thu, 14 Mar 2024 05:59:50 +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=1710395992; cv=none; b=QGqXfSMjNRrWtscx87vgp8V5E/dC6T3GJ6M4JOi3aSMq9Fl2wUqWtgBj/cmwgr02nMuZHSY9mCmCT0Q2SrsapAQgGTiDKmVZunbpm53FNO6G8LC5oHJeNIdWWwup0mQNoMZfHTWXeBrB5BHRQOiI4KPoAkPAGbsGMI4SkvCwNgg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710395992; c=relaxed/simple; bh=FRD4urmCzmXTmNozFD4Dr+8XpRmwK3qVFgHQ1nWF1hg=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=hDrATCognvGYzQpDwV2SghLeXbyBdlCVliQhbAqOg3O9hDR4fcr0lAkgXA2hCIeD6TRjKLR6anr80S1P3q6Vs5k+L98Ep0EC/IvumhhbISuxYmcKvbqwhFgMde5l4zwKlrnZtZ8748lGCsJin5+5OVNPE7LHF5t+EzO0giFHhcQ= 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=PMlh6PXL; 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="PMlh6PXL" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-dc647f65573so982558276.2 for ; Wed, 13 Mar 2024 22:59:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710395990; x=1711000790; 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=ILfM9APc2QmtUlfGAi2ySSBl9xHV6Dsl5aSOkdQM0Ig=; b=PMlh6PXLWUrJEN7+T4OJ7/W8aW9fYRQz5QAy74V31AntWFlmQFhjzW7PDpa4NyQh7W QPe2vGzFznRxfhIy/wezYn71kbbIzj6hqb2ca1KLeVR0fZll++GYumeSmUbAW/oWC780 BYYLaQOmWjDt7ifndkMUm7+0RnXN8xLSgIxpe4K27wO+LjZ25UJ3YtvDjc+SYxzs8f0B t9AVKvmeqhtGVtUm73jmMVAD/ccJgMC74Zfu6wO+iN3lsvB9vrV0aNHoiBzN1SZWliFw zfbhZsRGLMe6b51SE7X/EzmXA/8iYw6UTtNhtfeHU8JuXvCjhXvE6mi2+OaUhp82wj90 UYTQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710395990; x=1711000790; 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=ILfM9APc2QmtUlfGAi2ySSBl9xHV6Dsl5aSOkdQM0Ig=; b=M7Cg7ReneEi8MGSkIy0l9jR3CVEWJ0AettyFIBzNJ4yWLi4kxcCIk8GbwDk16pyaRG plN++2TyE1+gEdKLuYOqDWp/Wf8oC0B08WRCdViq/Da+mc6xwJfFvuFLN3LL2s1nEdGf xSd/Jyp8gt8jX/pCI7zUmS86x02xfhXd6xR8AoNsERwPIYL223Q1ljyLfaXLxzJz4Fc9 geRwXaZSPOIgOf+l96rhO8I1oGP4QIOy2apIaMYtOM4H9R1vJYqHZ0wgqvP9T6O2kxLH o/9/8JFq7O8pcNuyTr+YyF3g+HFw0gcRzcYKmuaNFexwsiOHxlmQZu3Cac9egEOH7JcF 5WoQ== X-Forwarded-Encrypted: i=1; AJvYcCXr7sVMzrNCdWUbBQYBIW3TH/rtjK0ArCMYD2yyaGZhEKcHttpLlVjNYQeCP+VDXkT3JAMVT6vsOk4tPeOCY1L1OQ4yqaFh31BqbJAp X-Gm-Message-State: AOJu0Yxk7KSH87DUzJCtnuhcoDEQFSujosTqzllctlHRy+wPorrwQZAj pVIv/xaR/4vQI8Nuu3KdqpPaH6ho0lxMxJ1d+5jsgeyw6BkW4CCM/b4dzQPX5aRtJ8rmHt7lFEk 79OFbgQ== X-Google-Smtp-Source: AGHT+IFpC7wmiwagj5y8cnwZSsboxN3EC3qcg38805ughEkS1bFKpFs0SIq5TZ9BGVGsPsTfIGRWURAoOFHS X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:449f:3bde:a4cd:806a]) (user=irogers job=sendgmr) by 2002:a05:6902:160f:b0:dcd:25be:aefb with SMTP id bw15-20020a056902160f00b00dcd25beaefbmr252248ybb.13.1710395990067; Wed, 13 Mar 2024 22:59:50 -0700 (PDT) Date: Wed, 13 Mar 2024 22:59:05 -0700 In-Reply-To: <20240314055919.1979781-1-irogers@google.com> Message-Id: <20240314055919.1979781-7-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 06/20] 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 , 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" 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=3D"Breakdown of transactional memory statistics") =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") + + def main() -> None: global _args =20 @@ -150,6 +287,7 @@ def main() -> None: Rapl(), Smi(), Tsx(), + IntelBr(), ]) =20 =20 --=20 2.44.0.278.ge034bb2e1d-goog