From nobody Mon Feb 9 03:11:11 2026 Received: from mail-dl1-f73.google.com (mail-dl1-f73.google.com [74.125.82.73]) (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 01F14334C09 for ; Thu, 8 Jan 2026 19:12:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767899539; cv=none; b=s63Mz7P55PxJ5yS7RC44nn0MEG5yOvhLotm4r8MLgZ0LfsyHRyzsD1G4ywZDmfYPm8F2ZKUp+sUZdy9b1a+keQ/sVGRYE5O1Xw2xTrE8MhRco5JVeAFKKLVezR9/d8zCunWnzQtRuNCLNgfEUPSlKxwtd4HMLmObr8xjaj0RdzE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767899539; c=relaxed/simple; bh=2jmqKph2zPBaDCiirJx0Zuul8V+Id9CgYa/L0xXNrec=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=ACIQhiOomnKqANKv06+NE7XgJ5/RIY4VLTlHx/cSmhRaL2ijEEMotyskJloHPOSQddBhLMM6O2Pgmd3KlZYjHF2m2cdoOaK5eKbH81WFsKueCX6+WPFb2b7mEp7T+5vEL/CBJc1tptJyhJhnEQ6yPy/MaPSL9vGMAYxuG4j11K4= 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=qxiBcboY; arc=none smtp.client-ip=74.125.82.73 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="qxiBcboY" Received: by mail-dl1-f73.google.com with SMTP id a92af1059eb24-12175e560b3so4291031c88.0 for ; Thu, 08 Jan 2026 11:12:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1767899537; x=1768504337; darn=vger.kernel.org; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=fJoyN8MzitpnRKNksQbC+dtWJQHWKeGHeklIvOG/ru4=; b=qxiBcboYLAPgGGEBBfuJX/1fn7GYAs3cAmn0dakBE+ksVMFUJ17x2v/9CXzerMAGdY CwFE9l6Tm33MoVNpyGMmPWH8s+6WAUVNr7173fPYg9sD9ZxhHZV9Y78LSd1NXQs2XwOP n8d2XfTjFyUTGFROpMd1zM7LhzOLqir7THerFvh1886P95yk/6AxfJq5Xut4oN7JUXvo L5YyOnT6rFWCsEUuUMcaTkJQUvlWz41B5uL0TeZaROn3SwEtbxD4i7KnwjKB8CUL4y9Q OAsH2nEWxzrKHCl1UyGSbDrOgrt1wZdd+CnVDJXlVqG/bhZ/VHTH96IAuUmsb8yKG45y ur7w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767899537; x=1768504337; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=fJoyN8MzitpnRKNksQbC+dtWJQHWKeGHeklIvOG/ru4=; b=cfe1PJ/TFKkYDILmf6UjxJUmDK8lxc++yT6wCxxSAv2LhVN3hJdCF1iJmEa652377v 9X88VrXkiP1NfMFeYezEq+bPKbd3cqag4DSsEIi4VwMD2YNaPdt2YY3964I8y4QX0XbJ MGRGZqu1IN007o/SbZNHpoHZj8XZTkZUgp+VWdJjYWVoqKlyMiyngxN/StAPAPjzc/pQ I18clKGGpd65aNArlezra05/lrskiGwOHGmgSJlDNjn5jDmFCXJDzU2iwEyOWFfYa74e JDgaqdstEW8DBsb4snmPi38GXTsYoevcBJjki+2/6uAZsCOeRFhV5/h4l1Ji18TXwbxd /Lhg== X-Forwarded-Encrypted: i=1; AJvYcCVcRgrLgvy5t7m2bow57B8cLds7G77lYNklR6HSiYNbHF7e+dNfdLm06F3SC+N13KtYIPMoNeNsGtyGBhs=@vger.kernel.org X-Gm-Message-State: AOJu0YzWrZs3K68gF29/prwhpJNUR1eqhdiLoJFp3kFiRUCQqqMGD67u 7Dhv1ISsI/XWQ3ZNak2k5/BlCCCps3t3TzSzVMWZfRnSU9qX0eZ8IgVQ6uVecynyAemRGY4iI1A G0EiB0KyKJw== X-Google-Smtp-Source: AGHT+IEUEByo3KVdc2tneC6+sxxVazCdj8/NYJ1QVKci61S7oIAhPXsrCf5wnLRlrXTGJYvPwim2AsCyOnYE X-Received: from dlbqi1.prod.google.com ([2002:a05:7022:ebc1:b0:11b:8174:bf47]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7022:24a3:b0:119:e56b:91f6 with SMTP id a92af1059eb24-121f8b656c7mr5857099c88.39.1767899536988; Thu, 08 Jan 2026 11:12:16 -0800 (PST) Date: Thu, 8 Jan 2026 11:10:57 -0800 In-Reply-To: <20260108191105.695131-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260108191105.695131-1-irogers@google.com> X-Mailer: git-send-email 2.52.0.457.g6b5491de43-goog Message-ID: <20260108191105.695131-28-irogers@google.com> Subject: [PATCH v10 27/35] perf jevents: Add mem_bw metric for Intel From: Ian Rogers To: Adrian Hunter , Alexander Shishkin , Arnaldo Carvalho de Melo , Benjamin Gray , Caleb Biggers , Edward Baker , Ian Rogers , Ingo Molnar , James Clark , Jing Zhang , Jiri Olsa , John Garry , Leo Yan , Namhyung Kim , Perry Taylor , Peter Zijlstra , Samantha Alt , Sandipan Das , Thomas Falcon , Weilin Wang , Xu Yang , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Break down memory bandwidth using uncore counters. For many models this matches the memory_bandwidth_* metrics, but these metrics aren't made available on all models. Add support for free running counters. Query the event json when determining which what events/counters are available. Tested-by: Thomas Falcon Signed-off-by: Ian Rogers --- tools/perf/pmu-events/intel_metrics.py | 62 ++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events= /intel_metrics.py index dddeae35e4b4..f671d6e4fd67 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -815,6 +815,67 @@ def IntelLdSt() -> Optional[MetricGroup]: ], description=3D"Breakdown of load/store instructions") =20 =20 +def UncoreMemBw() -> Optional[MetricGroup]: + mem_events =3D [] + try: + mem_events =3D json.load(open(f"{os.path.dirname(os.path.realpath(= __file__))}" + f"/arch/x86/{args.model}/uncore-memory= .json")) + except: + pass + + ddr_rds =3D 0 + ddr_wrs =3D 0 + ddr_total =3D 0 + for x in mem_events: + if "EventName" in x: + name =3D x["EventName"] + if re.search("^UNC_MC[0-9]+_RDCAS_COUNT_FREERUN", name): + ddr_rds +=3D Event(name) + elif re.search("^UNC_MC[0-9]+_WRCAS_COUNT_FREERUN", name): + ddr_wrs +=3D Event(name) + # elif re.search("^UNC_MC[0-9]+_TOTAL_REQCOUNT_FREERUN", name): + # ddr_total +=3D Event(name) + + if ddr_rds =3D=3D 0: + try: + ddr_rds =3D Event("UNC_M_CAS_COUNT.RD") + ddr_wrs =3D Event("UNC_M_CAS_COUNT.WR") + except: + return None + + ddr_total =3D ddr_rds + ddr_wrs + + pmm_rds =3D 0 + pmm_wrs =3D 0 + try: + pmm_rds =3D Event("UNC_M_PMM_RPQ_INSERTS") + pmm_wrs =3D Event("UNC_M_PMM_WPQ_INSERTS") + except: + pass + + pmm_total =3D pmm_rds + pmm_wrs + + scale =3D 64 / 1_000_000 + return MetricGroup("lpm_mem_bw", [ + MetricGroup("lpm_mem_bw_ddr", [ + Metric("lpm_mem_bw_ddr_read", "DDR memory read bandwidth", + d_ratio(ddr_rds, interval_sec), f"{scale}MB/s"), + Metric("lpm_mem_bw_ddr_write", "DDR memory write bandwidth", + d_ratio(ddr_wrs, interval_sec), f"{scale}MB/s"), + Metric("lpm_mem_bw_ddr_total", "DDR memory write bandwidth", + d_ratio(ddr_total, interval_sec), f"{scale}MB/s"), + ], description=3D"DDR Memory Bandwidth"), + MetricGroup("lpm_mem_bw_pmm", [ + Metric("lpm_mem_bw_pmm_read", "PMM memory read bandwidth", + d_ratio(pmm_rds, interval_sec), f"{scale}MB/s"), + Metric("lpm_mem_bw_pmm_write", "PMM memory write bandwidth", + d_ratio(pmm_wrs, interval_sec), f"{scale}MB/s"), + Metric("lpm_mem_bw_pmm_total", "PMM memory write bandwidth", + d_ratio(pmm_total, interval_sec), f"{scale}MB/s"), + ], description=3D"PMM Memory Bandwidth") if pmm_rds !=3D 0 else No= ne, + ], description=3D"Memory Bandwidth") + + def main() -> None: global _args =20 @@ -853,6 +914,7 @@ def main() -> None: IntelMlp(), IntelPorts(), IntelSwpf(), + UncoreMemBw(), ]) =20 if _args.metricgroups: --=20 2.52.0.457.g6b5491de43-goog