From nobody Thu Sep 18 03:45:04 2025 Received: from mail-pl1-f201.google.com (mail-pl1-f201.google.com [209.85.214.201]) (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 C5ABC236435 for ; Fri, 29 Aug 2025 04:12:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756440732; cv=none; b=Y2726barH7WUmM6+2NMLu0YbH4V5xAQKdv9j0kJJIz3M5cUZCnLSpRiM/4TCwr/HnX8VLrcqwSUzsCzW87eA8ymMy9ON3XCJ1wBm4sbCzghrxN8TH74VuQEU8qSglsd+OIgHDb2sEtw6YGII3sTfTVZiw9oPpKsjaKCmNUy62lQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756440732; c=relaxed/simple; bh=qC9qZKKpYDUm+kJyCEJpPENdOECbimVQo+edYHDXXIc=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=o6vcoQjQHDe1UFu1bYag2yUMvg75aKzOc88B0MgSWN0NJsBEEG1utwIwO7jWWPqYiMPmpUrC8wiMztByM28P8GxQAXS9/FlWfVCmD7CmA7Fcn4+ZQs5TYax/7QoTDQpck3vjkp5ynzHkExwXzp19T++FW84beSD3IDrQXYLvWw8= 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=p97Magzl; arc=none smtp.client-ip=209.85.214.201 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="p97Magzl" Received: by mail-pl1-f201.google.com with SMTP id d9443c01a7336-244581953b8so17575915ad.2 for ; Thu, 28 Aug 2025 21:12:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1756440730; x=1757045530; 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=oLMEPbiOl1CA0uGgkj22XdQGVWtN3/kulLXNUlnyl2g=; b=p97Magzl/nKZgt0COjJuR2mu8LNzhjoPoIuFwDCA/vtxJNJ/nyjZ90Ck5VqdK+StU4 LIjDOW3fsNqmG2vCV9/n3ZaX6wXkXLrQsy/33sl2GeevMNk++mjXmQzINtp6vQIM4+0u fcUOZi19AFvu4AKeCjrLbzdNYo/n+ADPmocbCaWcIIqQuSJ1ZVdMKVXzwkwqWoun4sEx HGQbBooKilUn6yPULNctJH0mxHZz3jmyL0lmbm7Wy7MA6192vCU4ejEPRjuDrU7g5ZBP p92hGMTuZxXB/Y0cmglp6zqeuUGYXBYgLLSJ16jzWcxyniUo8Y0FWnbRKM9obM6B4Gtd VYag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756440730; x=1757045530; 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=oLMEPbiOl1CA0uGgkj22XdQGVWtN3/kulLXNUlnyl2g=; b=SMJqVYgxglwR7evHkhrtb5Om0PEWeDFZfTywtXX+gaJ1fTUT0+6ij2RXkSTwDoOnEC zNVfpDNQw1Enj9TTMdvDenqqUXa1fnvMz74E7YFhcKT9Hq0Z/PnObWc6iZB7sR0BKn4c jPMoQUfZYdwLMPLI2tbWj3zz28BV8r+3izT6v73k+0E4xdQxqq1rcymoGKkbFYAI93Xw WJc4pFJ4a3r0fiuDT2WwtM71w92Oc99K3e6pOVkEN7KKv6CzsDEV42qtyA8XmxAPy9Uj QbTosgPKz17H2EhdjEKJyJtZiULYqv5lxeKy8SxNsVoictuQHmF1mfjZW9vtlPBMAvdB ERTA== X-Forwarded-Encrypted: i=1; AJvYcCVCGJwcDTTXiWcqN6xSiNiyfB7L+deicJr5I8ndIG1cLbcgB24fjY9Fg1O9hujMGsn4251mstAITssNrPY=@vger.kernel.org X-Gm-Message-State: AOJu0Yz7Q3rPtcjfatUaoF4Xm+FUMoq4siUaFwvoHL6tYrf5jU0Zph06 qhb6keJKlYGuS01QIlKXZDuM+nRcqe4nprCsjZtBJUtn1xDFWOJwA/vyYEO98ZPmEbe6giL+Rmo VqUDpsOx2xQ== X-Google-Smtp-Source: AGHT+IHDsva2lKFanEaCvFFadJFWsw5tY+H9T7b+ytrl0xjAXY/bleP9SdCSpagPCUKeSl3MKOb5pT7fhOqm X-Received: from plbbg1.prod.google.com ([2002:a17:902:8e81:b0:248:7880:829c]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:17c3:b0:23f:f96d:7579 with SMTP id d9443c01a7336-2462ef446c2mr321044585ad.37.1756440729973; Thu, 28 Aug 2025 21:12:09 -0700 (PDT) Date: Thu, 28 Aug 2025 21:11:03 -0700 In-Reply-To: <20250829041104.4186320-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250829041104.4186320-1-irogers@google.com> X-Mailer: git-send-email 2.51.0.318.gd7df087d1a-goog Message-ID: <20250829041104.4186320-23-irogers@google.com> Subject: [PATCH v5 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 19c7357c496a..7250e8c8eeba 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 2.51.0.318.gd7df087d1a-goog