From nobody Wed Dec 10 20:09:21 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 ADF6231DDBC for ; Thu, 13 Nov 2025 03:22:27 +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=1763004149; cv=none; b=FSBCDgZWH2G/Rmphpe0o+629xg/1P+8AmdgN2Vrv8rM54lYsrSDTakIgFhyz/7Dgoy2nshV2dRcXNiLSMdYAxM2/eT3ceb1+S8yDrZRdb57mTPPBMCRY0taNp+1Y5AIwLDBw8LuzqDiza+xtiZYMugy8fWI/R0YRilUoLg9zOYo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763004149; c=relaxed/simple; bh=oXAmtgsImllTRrtDplcjWM9IZhTB1W9ikRhG0FFfEH0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=gVoL7ZaPH0pP6e0c5T+GsutcU1pdcL+kCcK6HRa/CNWkvIw5Vo5/oJBNeoCvxf5KTbzfaYRIEtIpzozbpnaLLuyT+Hyafdw5t2yuoqftZVPIMrBw/6aVub4Gxn5OROa4NXEHDDVBEGVv/r65aPDdF3xnm1GEQcWdcyD8SZPEzl4= 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=sXfMHv0k; 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="sXfMHv0k" Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-298389232c4so4279135ad.2 for ; Wed, 12 Nov 2025 19:22:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1763004147; x=1763608947; 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=G2yA77Jngt2V93ChqEEVEBYrKD8KbAxrlMWRT/ziXs0=; b=sXfMHv0kyvxBsexoL3bXR7KC/F7yyw69URQKN1b4Y+q/PNXkBT35SwHdlTVUoD1Pux 8olA3ktSZjvZgK1ow9xgMbQ3ZZt7UB2STwo90pVhdsTuONBXAqMaRr4sVgt69y0SSgQ6 kemooEtJPm/6rxf/RJ708pVVhD0RwOjga6oZ0avlwtY8Hb76EGS5gLtEdrH2yK8GCj65 K9RR6f04pTTcKHJTp7bT9lVJcIwly6TjYFNh+UoIB9quVzIMtP2VhMdqmHnv54W4Kwp6 uGML98NPs4LgsZ218b+GCvnbH6vVyR/pVrZMKrsX0hzQ8IljUNU5TtZmUe9uIR4O+O9x k95g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763004147; x=1763608947; 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=G2yA77Jngt2V93ChqEEVEBYrKD8KbAxrlMWRT/ziXs0=; b=iH3ng6Z0Z/XcU1yfMtohVLk4HAv8oINg0Ibco2dln78H4Ocwrb/NJJbzcvLjPAPdpg cqmNvx7C6TU/QUU8iP58V0jaI/y4plq7gUgrGp+5GzQSvrJHHzNNIUkxp3WUmiTWaFUF eXxbIfprEejSBADwN7N4fKXhjS+5dHE6K4AchpbFWU70gABD/lh040MxEawwgO3+Cd/y YvzSG9K1VyIzClRSW/O3YbQLAkXJyPaZHtyko0TNnniZtIHD29IOuw+/O9Hc20v9rhcH YS7svDWWciBMS/ELN2S4Y8Mj5uKLclmYuAfdK66Ump0QDH9qy7saXgdP9+oJFaL+RBnE pOYw== X-Forwarded-Encrypted: i=1; AJvYcCVVjvsc1CQWfQOrXum7ro0B2mssPGQOU9gkVc1MY6v1GVrTmKdQF8S4mj8n7bcapwrmlRAdLP5vkkaWb4c=@vger.kernel.org X-Gm-Message-State: AOJu0Yy/DfZfKsRBa9QdZ29gG25dMO19CBRNm/82pIXXr2fd7k4eh5ZA PWBYBtaX37kID7dd3TtVI32ts9vuTytul/qSYJrzEX/UtGHYkgZdRSPbKnqpqXuywBRJsARtThc bfYc+Wjp/zg== X-Google-Smtp-Source: AGHT+IETV7NmdBB6OQQbZJCyttKLnd5FX/GWTU35O2jI5hlKHBRCYYEaswxN/MnfzJGT3I6n2GJ1fJDmCeS6 X-Received: from dycaj13.prod.google.com ([2002:a05:7300:fb8d:b0:2a4:849f:60af]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:b0d:b0:294:ccc6:ccfd with SMTP id d9443c01a7336-2984ed41a1cmr58123335ad.24.1763004147161; Wed, 12 Nov 2025 19:22:27 -0800 (PST) Date: Wed, 12 Nov 2025 19:20:37 -0800 In-Reply-To: <20251113032040.1994090-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251113032040.1994090-1-irogers@google.com> X-Mailer: git-send-email 2.51.2.1041.gc1ab5b90ca-goog Message-ID: <20251113032040.1994090-50-irogers@google.com> Subject: [PATCH v8 49/52] 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. 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 2.51.2.1041.gc1ab5b90ca-goog