From nobody Wed Dec 17 10:45:00 2025 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5A23B38DE4; Fri, 12 Jul 2024 19:09:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720811389; cv=none; b=ckq3CJT93vbA9ZCFuAYuxxdxFaLK+mMS3fBsoZ4CzaGZDszx8Z31VtIrMNEcvBtzf5Rof+ptygg3O17q1SAaTf1Bp9qDibjLcpyeP6HfoUS7StF0zpnq4Go2O50MgQ8b6dw5CbqcunRZ3YLkywFvxJ0vexAMSIJtFZYaAAGyOv4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720811389; c=relaxed/simple; bh=OR8q2r2JaA31znJ8tT75E0C1yIaYLORuJJbkkU5GQOA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UZgN0YZV6wcK59PW7HVmVbbpWYSe6Ihv/lBH5c9U24Cj4wBhH/L1HC63S5e/qu1FVYjHnANXUtdOOZRN+ISvYjRUhVy2R7nFkgdpd4+j5tSlEOg6NkhH508smiNfoT4uquEGOrVHCZDvTmjQS0s4nccdht4XMGbuI1FPUW06jZo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=GtxmWYm/; arc=none smtp.client-ip=192.198.163.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="GtxmWYm/" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1720811387; x=1752347387; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=OR8q2r2JaA31znJ8tT75E0C1yIaYLORuJJbkkU5GQOA=; b=GtxmWYm/+QC6npVt2jPGe9d95VACbyxzcdZAAvM3ChtZeRIMmM6UhyW1 L9WsCGW/klHzArbnMwwjwaQQWNBUTcL+CpgMJBW7sXPIQUIjhSatkB+Yy c1LsIWel9iiu7Ru1Quy2oQ1xmpOwKKuNIcOAIQFQ/mfbvNawlQr52Jc21 Lo43t4H6Y8tXeyRrEs9H9oRKSlHwPghRZ8sb6A8c92Kv6EpHQNRMxpUD6 a/Ni09xhLqyAKPtWQ3o37rHecC0W9i5eXrHy7vvNzbVStJceRyyDAGGGJ XVFMrxmDcLjxSgcW5UXFt2cwScMQQQygLPijrCamFAI14Ajc1uPPAlicO w==; X-CSE-ConnectionGUID: kDV6TGBhTdO3CdqCkO1fFw== X-CSE-MsgGUID: cBWOdlaxTNq0WgMMbgbZnw== X-IronPort-AV: E=McAfee;i="6700,10204,11131"; a="43683039" X-IronPort-AV: E=Sophos;i="6.09,203,1716274800"; d="scan'208";a="43683039" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jul 2024 12:09:42 -0700 X-CSE-ConnectionGUID: afoflR5TT9+LvDfgofIzyQ== X-CSE-MsgGUID: qP7WyTOcSSegfRpcgV68VQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,203,1716274800"; d="scan'208";a="54187445" Received: from fl31ca102ks0602.deacluster.intel.com (HELO gnr-bkc.deacluster.intel.com) ([10.75.133.163]) by orviesa004.jf.intel.com with ESMTP; 12 Jul 2024 12:09:42 -0700 From: weilin.wang@intel.com To: weilin.wang@intel.com, Namhyung Kim , Ian Rogers , Arnaldo Carvalho de Melo , Peter Zijlstra , Ingo Molnar , Alexander Shishkin , Jiri Olsa , Adrian Hunter , Kan Liang Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Perry Taylor , Samantha Alt , Caleb Biggers Subject: [RFC PATCH v17 6/8] perf stat: Add command line option for enabling tpebs recording Date: Fri, 12 Jul 2024 15:09:28 -0400 Message-ID: <20240712190932.417531-7-weilin.wang@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240712190932.417531-1-weilin.wang@intel.com> References: <20240712190932.417531-1-weilin.wang@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Weilin Wang With this command line option, tpebs recording is turned off in perf stat on default. It will only be turned on when this option is given in perf stat command. Exampe with --record-tpebs: perf stat -M tma_split_loads -C1-4 --record-tpebs sleep 1 [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.044 MB - ] Performance counter stats for 'CPU(s) 1-4': 53,259,156,071 cpu_core/TOPDOWN.SLOTS/ # 1.6 % tma_= split_loads (50.00%) 15,867,565,250 cpu_core/topdown-retiring/ = (50.00%) 15,655,580,731 cpu_core/topdown-mem-bound/ = (50.00%) 11,738,022,218 cpu_core/topdown-bad-spec/ = (50.00%) 6,151,265,424 cpu_core/topdown-fe-bound/ = (50.00%) 20,445,917,581 cpu_core/topdown-be-bound/ = (50.00%) 6,925,098,013 cpu_core/L1D_PEND_MISS.PENDING/ = (50.00%) 3,838,653,421 cpu_core/MEMORY_ACTIVITY.STALLS_L1D_MISS/ = (50.00%) 4,797,059,783 cpu_core/EXE_ACTIVITY.BOUND_ON_LOADS/ = (50.00%) 11,931,916,714 cpu_core/CPU_CLK_UNHALTED.THREAD/ = (50.00%) 102,576,164 cpu_core/MEM_LOAD_COMPLETED.L1_MISS_ANY/ = (50.00%) 64,071,854 cpu_core/MEM_INST_RETIRED.SPLIT_LOADS/ = (50.00%) 3 cpu_core/MEM_INST_RETIRED.SPLIT_LOADS/R 1.003049679 seconds time elapsed Exampe without --record-tpebs: perf stat -M tma_contested_accesses -C1 sleep 1 Performance counter stats for 'CPU(s) 1': 50,203,891 cpu_core/TOPDOWN.SLOTS/ # 0.0 % tma_= contested_accesses (63.60%) 10,040,777 cpu_core/topdown-retiring/ = (63.60%) 6,890,729 cpu_core/topdown-mem-bound/ = (63.60%) 2,756,463 cpu_core/topdown-bad-spec/ = (63.60%) 10,828,288 cpu_core/topdown-fe-bound/ = (63.60%) 28,350,432 cpu_core/topdown-be-bound/ = (63.60%) 98 cpu_core/OCR.DEMAND_DATA_RD.L3_HIT.SNOOP_HITM/ = (63.70%) 577,520 cpu_core/MEMORY_ACTIVITY.STALLS_L2_MISS/ = (54.62%) 313,339 cpu_core/MEMORY_ACTIVITY.STALLS_L3_MISS/ = (54.62%) 14,155 cpu_core/MEM_LOAD_RETIRED.L1_MISS/ = (45.54%) 0 cpu_core/OCR.DEMAND_DATA_RD.L3_HIT.SNOOP_HIT_WITH_F= WD/ (36.30%) 8,468,077 cpu_core/CPU_CLK_UNHALTED.THREAD/ = (45.38%) 198 cpu_core/MEM_LOAD_L3_HIT_RETIRED.XSNP_MISS/ = (45.38%) 8,324 cpu_core/MEM_LOAD_RETIRED.FB_HIT/ = (45.38%) 3,388,031,520 TSC 23,226,785 cpu_core/CPU_CLK_UNHALTED.REF_TSC/ = (54.46%) 80 cpu_core/MEM_LOAD_L3_HIT_RETIRED.XSNP_FWD/ = (54.46%) 0 cpu_core/MEM_LOAD_L3_HIT_RETIRED.XSNP_FWD/R 0 cpu_core/MEM_LOAD_L3_HIT_RETIRED.XSNP_MISS/R 1,006,816,667 ns duration_time 1.002537737 seconds time elapsed Signed-off-by: Weilin Wang --- tools/perf/Documentation/perf-stat.txt | 8 ++++++++ tools/perf/builtin-stat.c | 4 ++++ 2 files changed, 12 insertions(+) diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentat= ion/perf-stat.txt index 29756a87ab6f..2bc063672486 100644 --- a/tools/perf/Documentation/perf-stat.txt +++ b/tools/perf/Documentation/perf-stat.txt @@ -498,6 +498,14 @@ To interpret the results it is usually needed to know = on which CPUs the workload runs on. If needed the CPUs can be forced using taskset. =20 +--record-tpebs:: +Enable automatic sampling on Intel TPEBS retire_latency events (event with= :R +modifier). Without this option, perf would not capture dynamic retire_late= ncy +at runtime. Currently, a zero value is assigned to the retire_latency even= t when +this option is not set. The TPEBS hardware feature starts from Intel Grani= te +Rapids microarchitecture. This option only exists in X86_64 and is meaning= ful on +Intel platforms with TPEBS feature. + --td-level:: Print the top-down statistics that equal the input level. It allows users to print the interested top-down metrics level instead of the diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 68125bd75b37..935386a02e78 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -2475,6 +2475,10 @@ int cmd_stat(int argc, const char **argv) "disable adding events for the metric threshold calculation"), OPT_BOOLEAN(0, "topdown", &topdown_run, "measure top-down statistics"), +#ifdef HAVE_ARCH_X86_64_SUPPORT + OPT_BOOLEAN(0, "record-tpebs", &tpebs_recording, + "enable recording for tpebs when retire_latency required"), +#endif OPT_UINTEGER(0, "td-level", &stat_config.topdown_level, "Set the metrics level for the top-down statistics (0: max level)"), OPT_BOOLEAN(0, "smi-cost", &smi_cost, --=20 2.43.0