From nobody Thu Sep 18 05:42:50 2025 Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) (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 7521527E076 for ; Thu, 4 Sep 2025 04:47:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756961262; cv=none; b=b+KdkUEV2R2kwaUXWna1fqU85MehdcRKVQjZNoHOW9bpokMERWalynXvTIC21bMOVOsOyAESdLR0q+pXcSYMSvgBBtpqC2ebB1SXklShyEd5JOwH1Q/hOyxzWxmwF1ci38TTokDpDXPbqxSEPyB77irExBgm/YxI4/MnBVTpSXs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756961262; c=relaxed/simple; bh=RistnuAgHd4NCL4l0yE6lEPBFwvSNadT93kj/NUVg6M=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=TgvKDO76E1OGhgbELCA7Bxz0TbsSVaV1fnsxpTwsssjfF8SaFvQwc6J67D/AaHQzsYFV0iAHMPba8tWlVLenNhHm6FEc0DtUw9OcB7GNkD2mg+71Gspt7WukYfWxBC55fhO5ANInOgwiK0jvep7juA/XW1jF6wVdnrU5LnZXHTc= 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=p+DOnwEq; arc=none smtp.client-ip=209.85.214.202 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="p+DOnwEq" Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-24cc4458e89so7475215ad.1 for ; Wed, 03 Sep 2025 21:47:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1756961260; x=1757566060; 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=VgqEItY9A2DTGkflolDC2RygmVecc1iPe1xmOKI5+pQ=; b=p+DOnwEqjd3OMbeS4uKh98kWBw3mEHnKD5ZV/irmAvW2uLtDkahIHubQEU0zKIwx8J PuWw5P6dfpyz7goXYgN9A8KbuwHEWAT2H8i/cZDQm8MZR+9nNM+HPcTKElkVEU9Unrck IQ7F89IiC77r8HFhs58liJ9LUUQRe3LEpu6BEY1ulhfsSsKCO5ZoPBuhvLT3cOQXXmm+ JUQNdy30pDZ3h8MsBlZrVYkhQmIRnHZDmj13DPtCPunJRCHx7tKGeQGxXCtnUkJC/3YU m5Nsiy7+Xalyzi8MzwI5h6IF7g1+Jt9/Apmpa3+wqigeH0qh37sBU4UZS5z3yazy8j9c aZbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756961260; x=1757566060; 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=VgqEItY9A2DTGkflolDC2RygmVecc1iPe1xmOKI5+pQ=; b=FXTxw7i7PGV/eQ/JasweELQzRatI9Xf9SFLgQsNCw8rEOm2nMcKtmciJbxvXin+C5J +7q1tS274nx4xs60p+4DCP7NhHDVxx08/t2qs80IYBdyNTrjQFRYQp6l/mZeSGenWKRD r7e+XL7p8zXgO5RO36Mi9RBamjfOluOtVVW3vjmWqO8DsGQwh0WFij3RbM2b4pDPGlNs tf4ibfmWLuv/q+cPUQwkDNTj+u4/s92Sql5zDBFylcc2CA5crTs9NvfHJjEimbUKOZ72 6Xp8Qnn3fyfSgfgI54XARO+6au28y1oXFpns1xU/1ku2p0JWCx/DnTjwO4VC7r8skIBB hXsw== X-Forwarded-Encrypted: i=1; AJvYcCV5rSd+4t9LXV4oYPutQdpFNGoZ5WWlbWo4R/EcI9y4XdBn/GPoegij333DtOpksSfLwtRIyVo8zLy5iRM=@vger.kernel.org X-Gm-Message-State: AOJu0YyXcIyR5ORZ9igBcPc3XxdDUha86dkRG/EetmTrLQM0/BK/8ceC SK6MAdLfODh86tZ4BSnUBYA36PvVqMsrP9sZFzOd5VGHw2HqQSa711jJC82cY6jVwb38R2VP6RI kIeUc1Iy5/A== X-Google-Smtp-Source: AGHT+IF0wYPqg7zlSl1qx2A5P6s9Rtb4ovc11SlDLv1+Ceku358dlTNxKQe5YNKmsHdiFgykM9R6GbvmqjAn X-Received: from plbkz7.prod.google.com ([2002:a17:902:f9c7:b0:248:7327:44b8]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:2f0d:b0:249:f16:f080 with SMTP id d9443c01a7336-24944afb3ccmr226252725ad.52.1756961259744; Wed, 03 Sep 2025 21:47:39 -0700 (PDT) Date: Wed, 3 Sep 2025 21:46:53 -0700 In-Reply-To: <20250904044653.1002362-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250904044653.1002362-1-irogers@google.com> X-Mailer: git-send-email 2.51.0.338.gd7d06c2dae-goog Message-ID: <20250904044653.1002362-23-irogers@google.com> Subject: [PATCH v6 22/22] perf jevents: Add mesh bandwidth saturation metric for 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 , James Clark , Xu Yang , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, John Garry , Jing Zhang , Sandipan Das , Benjamin Gray , Perry Taylor , Samantha Alt , Caleb Biggers , Weilin Wang , Edward Baker , Thomas Falcon 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. 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 e639e8998d87..36b6c4704522 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -1009,6 +1009,22 @@ 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_ASSERTED= .VERT", + "UNC_C_FAST_ASSERTED") + except: + return None + + desc =3D ("Mesh Bandwidth saturation (% CBOX cycles with FAST signal ass= erted, " + "include QPI bandwidth saturation), lower is better") + if "UNC_CHA_" in sat.name: + desc =3D ("Mesh Bandwidth saturation (% CHA cycles with FAST signal as= serted, " + "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") @@ -1071,6 +1087,7 @@ def main() -> None: UncoreDir(), UncoreMem(), UncoreMemBw(), + UncoreMemSat(), UncoreUpiBw(), ]) =20 --=20 2.51.0.338.gd7d06c2dae-goog