From nobody Mon Feb 9 04:13:59 2026 Received: from mail-dy1-f201.google.com (mail-dy1-f201.google.com [74.125.82.201]) (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 50B103644BA for ; Tue, 27 Jan 2026 18:46:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769539580; cv=none; b=PnvgmHDQ5xQVfqwlsTHQ52z/PGhlrXtGeoFeipeHJLQuji7QuHJmvVxcTor5RlH3YMWqgpmpVPsb5mI9RIR0Xhxq2PGIlFaFdx8ZG+dY+WLecucuvf0spHcLwaD8kc27Z+a0TYnXMeCtm6oPgua+u37O4DzenrQ2Ni9TaDxCW6A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769539580; c=relaxed/simple; bh=2jmqKph2zPBaDCiirJx0Zuul8V+Id9CgYa/L0xXNrec=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=O1q/XmJw6cB8lEV3yAqYPTMHazJkt5Mp+cy44kryp0HMdTJI2tYRC1Zv6Y9rRXhVxwPB9r4ahCThKIJvHSCaxYSVhs0Oci3IRYO6fSSptDSoxUFvQZ5IUwXQduD5LR8mzZe9o1jldlAzlSM4zaR8gILK7C6XpjyM9pn628n0FKg= 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=XxpI3PI6; arc=none smtp.client-ip=74.125.82.201 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="XxpI3PI6" Received: by mail-dy1-f201.google.com with SMTP id 5a478bee46e88-2b6b9c1249fso11402582eec.1 for ; Tue, 27 Jan 2026 10:46:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1769539578; x=1770144378; 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=XxpI3PI6CSWhaskHPnx3oXUTHjY9gIyU0JGeOihV+xKlOMhtNkQMrz5HMEExaA9ml0 JkaLL3DQGRfO/x7E8EFgCJe7rN0NsPF5EyyrPtIOFa+iOoe2VeatLHFNhwJOo3ik1uq1 u3RHKfob7QZvaq0wJwjvkkw6/R44f5lGIK7osOEqkxz0ubzPcI11RCdy4zelO5T8kBns b71x2b+rtA+pz1PC5LPpmyANksb4/ENF/3BITru3azqnqzyWwPhX9Sol8ijysclxW9Z+ Ot+Suh3dfhvVDcXLhUaSR7qWh60VR5vlIBK/03KxqEcaRzKb3CSVjwtpFuNbspLDa8I5 vkVQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769539578; x=1770144378; 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=fFLcD7k39dsCJvNqzkG5PbH4lWRo9qjPXVqwWx7GsCQ+Xn+UvMJRXKLQdbhq4CZVqV 3WC2zkzrEAqWg711luGVN0cJkhd0RO8JND5R9jgtWEAmqu8n4FsBlEdxM2nbJ7FSqEWa 0fhzY7gGGrj2PUPE/P8VLr4Np3czoFdPDnlxgDNGIe1frTnjFPS1t7XdhPgCQcxc01f0 qYZ7RS4m3VYdLeG0YqFDCMovfOBwAqdnPoRiZefOmt5Ldkj+Edsgs+IcR7xMOTH5OQK6 25Lvw7BZryryi9+IgiCwFmE6zIFZfclGQu3cQtWmFFhTjWmhlV8JHbJNK4G1+8lDoIZ+ 9i0g== X-Forwarded-Encrypted: i=1; AJvYcCWUfoAamjoEMsyqd1oKsAeOtyYWK8yN0L/Ie88rZVfLCgrn3wigQfuXT0bos5vJp/yfLiw3ndhP3Z8LcsI=@vger.kernel.org X-Gm-Message-State: AOJu0Yx/DTyyGrtiIwVheIQLfSB8fXXGtzp5rqXsPzj8WHSaj7GPZEIc 3OVJqEkPk4rvsvfeVfWSOheC5u3TsZGGbPJuYpUcx12TRSY3i4lQ98jZH715D0UOfj3jNFjqCgF b4jHV83SZyA== X-Received: from dyw2.prod.google.com ([2002:a05:7300:8802:b0:2a2:4eb1:3771]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7301:7018:b0:2b7:2a17:af34 with SMTP id 5a478bee46e88-2b78d9f1bdemr1836844eec.23.1769539578354; Tue, 27 Jan 2026 10:46:18 -0800 (PST) Date: Tue, 27 Jan 2026 10:44:58 -0800 In-Reply-To: <20260127184506.3059493-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260127184506.3059493-1-irogers@google.com> X-Mailer: git-send-email 2.52.0.457.g6b5491de43-goog Message-ID: <20260127184506.3059493-28-irogers@google.com> Subject: [PATCH v11 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 , 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