From nobody Mon Feb 9 01:15:41 2026 Received: from mail-dl1-f74.google.com (mail-dl1-f74.google.com [74.125.82.74]) (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 EB6FD33769F for ; Thu, 8 Jan 2026 19:12:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767899550; cv=none; b=QS9MaVlm7r+Bu66s1XXZaI32+Lj6jarQmAK/RG06TybkjpzJ/HHnzt07zhaSYNFgcSI0ctvAtBOIpveKuLGhO8LFIt3hhS8dOTEcmKMrWQqHJ/rImtjE/LFK+y1D1TMTkB0fMnhAWnm9E6Vxzv6FnAdq6loglG24Nui1nkb+p9I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767899550; c=relaxed/simple; bh=ehb9+lTGbZ1qDk8zx/gxtgX32wpwcKjuLsajxpEl9rk=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=XcETFXwlYhIUlHVdXkTjti9CTbGXasscBPQ7O5Ly6r7OlhtuoYVvhXZMEGZ+70hSkRdCvwcrKFxvyi1hYAg7UWpx0yZNir02EaJdVB9JPfcCzNhUCCR4X5im2j5NO49iBVcMbi1COoEI5M6/u+APTRNROmg88kEVf+Cw1zJJDAQ= 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=egZt/jqT; arc=none smtp.client-ip=74.125.82.74 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="egZt/jqT" Received: by mail-dl1-f74.google.com with SMTP id a92af1059eb24-12055b90b7bso252764c88.0 for ; Thu, 08 Jan 2026 11:12:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1767899548; x=1768504348; 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=paWFxLvTCvU+EVxViFjzHOc9++WhWxJTYiWc7P0l41k=; b=egZt/jqTPrbtDRoQNRrVQZiOPfxQixeMQ7LDqMHzdWkWYnSvoj1EjmkyI2YjhK/M3H ZNGvko+qxHc74N6LncjWkLnPHwHzicdCQGwOPFZg1YJos4j0e86BaR3iMCFusT1yCwCG 99uuBuM3tgzFZ+sd9ng2GNejKWl1OQDN0mYGi0z24gIHsfmuY5lp5GfgqymeOTlIpQN6 I4T9TDzZ6IjtA5gUZMh4pTq5zEv2Gap3+acCw5221y2npK/8ix2jReJ74BMk7b5SEl+c wfQJmUi3QLe6BDTTPOL7rCDpAVO0p7PZE81mcMiCeJzLyZhCVqiCx+6URYwsbr1R9VV5 xT0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767899548; x=1768504348; 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=paWFxLvTCvU+EVxViFjzHOc9++WhWxJTYiWc7P0l41k=; b=Kg71KvVdmktUaCyf2t0L7fmMyW1eu2SvyddbktbNWjNwvFNc5+L7xiovPdHpuT/Nyd wPol2ryembz/7MQcVnC5QVcP9PNXozyaXFJy9v8tQL8AQozV+0PDMN56XMklmpocYqO5 AVBgZG81HTSPEGjnRHlgXoR4v9O/9JRowudKD3lXNWrMW2cs0lJa7Se8JjEO64lOiGOG vutCnbClca+8yCR8vOqzvjm/RtjwEzU+DThFyvYuIusCrUYmlbSe+ind6n6SgnNR6pXG 8xquOuvOCM83cPn70l8NCcqO3oslz9lGKWADVIcdmXQFTaqX+QXqRdbx0vNKuhv+zndg MRiQ== X-Forwarded-Encrypted: i=1; AJvYcCUr5gNaPWrEdPD9hz/BPyAGqN/XQ8s2aO8eelzCWLzl/ByLWbZSffggPYA0AMNA0gHlNnKl7lOhfC/3zIs=@vger.kernel.org X-Gm-Message-State: AOJu0YwZSiOjiT7Xe5f+HcQOdyoLHa+0jp9eWGAcVVvjzEFnnL1Aurf+ vXmSfZrxRt8c32+sht0JFpr7dLZU6zfpuWhUxFF9yTA6FRotgmd1n2Ug7SKtEGcURehWkRXYXE+ wjHit08pm3w== X-Google-Smtp-Source: AGHT+IHI8aai5BW52rtKSJMV78OxIVmbD0L5/gXaoix+RCWYIr4y1IK7qLjzVj4lsp1SYuEXviIgPjKQWoXF X-Received: from dlbup8.prod.google.com ([2002:a05:7022:fd08:b0:11e:60ad:95af]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7022:51b:b0:11b:8f02:a876 with SMTP id a92af1059eb24-121f8b40bb1mr5968589c88.23.1767899547811; Thu, 08 Jan 2026 11:12:27 -0800 (PST) Date: Thu, 8 Jan 2026 11:11:03 -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: <20260108191105.695131-34-irogers@google.com> Subject: [PATCH v10 33/35] perf jevents: Add mesh bandwidth saturation 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" Memory bandwidth saturation from CBOX/CHA events present in broadwellde, broadwellx, cascadelakex, haswellx, icelakex, skylakex and snowridgex. Tested-by: Thomas Falcon Signed-off-by: Ian Rogers --- tools/perf/pmu-events/intel_metrics.py | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events= /intel_metrics.py index f6bb691dc5bb..d56bab7337df 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -1033,6 +1033,22 @@ def UncoreMemBw() -> Optional[MetricGroup]: ], description=3D"Memory Bandwidth") =20 =20 +def UncoreMemSat() -> Optional[Metric]: + try: + clocks =3D Event("UNC_CHA_CLOCKTICKS", "UNC_C_CLOCKTICKS") + sat =3D Event("UNC_CHA_DISTRESS_ASSERTED.VERT", "UNC_CHA_FAST_ASSE= RTED.VERT", + "UNC_C_FAST_ASSERTED") + except: + return None + + desc =3D ("Mesh Bandwidth saturation (% CBOX cycles with FAST signal a= sserted, " + "include QPI bandwidth saturation), lower is better") + if "UNC_CHA_" in sat.name: + desc =3D ("Mesh Bandwidth saturation (% CHA cycles with FAST signa= l asserted, " + "include UPI bandwidth saturation), lower is better") + return Metric("lpm_mem_sat", desc, d_ratio(sat, clocks), "100%") + + def UncoreUpiBw() -> Optional[MetricGroup]: try: upi_rds =3D Event("UNC_UPI_RxL_FLITS.ALL_DATA") @@ -1097,6 +1113,7 @@ def main() -> None: UncoreDir(), UncoreMem(), UncoreMemBw(), + UncoreMemSat(), UncoreUpiBw(), ]) =20 --=20 2.52.0.457.g6b5491de43-goog