From nobody Tue Dec 9 03:42:37 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 146B631D374 for ; Thu, 13 Nov 2025 03:22:23 +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=1763004145; cv=none; b=OHBeqljlYpfgSLqLrtpDmY31GBSagUZTeq5DdCEGlL+2ezbA6V1jAPJktm+dysvOBKQev+pbnvMXjPDXE/9Rx/4wtxfYzmueZlnlfJdwQLyCE1PEH8hYGpsT8RQ7+yhLpu1QgtPzq8xOQXC2MImXYtoX3rgARSDFeLqfQHvzEXA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763004145; c=relaxed/simple; bh=kR0Wpo93b/9yAlKTiVxb2htRYYMT4bJcY7/ZDrnuZ68=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=r64wz85/qr833zFzDyXhabnImkoPuO1Hm3tUFCRLEmvUi4bYGZ69sPkyIRIFdpxQpNHG7ZtD8fDp3HNd8t9TVUWoRQE1X/3S9Vfr1rYtrbY49yKevaEKgf5xDfkaXeHw+H4pI/aM+d1mLNp7sQ004zzqsSOROfzb4taIDEnoi2o= 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=Fe0zSLRR; 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="Fe0zSLRR" Received: by mail-pl1-f201.google.com with SMTP id d9443c01a7336-297fbfb4e53so6661505ad.1 for ; Wed, 12 Nov 2025 19:22:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1763004143; x=1763608943; 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=Cr2E/rZyypVk16f+Wt6vPqyku+fBwmlpS/IKRSeeaw4=; b=Fe0zSLRRFmZyH+N3pIEpDFddfvGLAql3BG6TbanDHFdSsYIc4tEtcAzVFX2hP+MuoP XPFtsgGGlOMXwAlopAt6J8Zym1hQpW5T8lWB1KG3Fh+n6/WODw8KGj/Uwmzjy5rs4x2v DGQDR01KzhguXXthdVchj6qB89SyQXXKcQrny9IoItAmE5lz/fqjE9utiFcGnUAShs2e gbi4NXhBu/f4XE5VaNqlflDyNnNR5KycC2vzhO36Q3LJWXLz8Q13jHzYayByak79D6r/ +jvYgkOBP54tN06UWHyNDE4b2ctxJ53p70TgSRmgq7+i/VT7AELJwSofEEehfBCxTl/C 7QCQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763004143; x=1763608943; 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=Cr2E/rZyypVk16f+Wt6vPqyku+fBwmlpS/IKRSeeaw4=; b=MFd9VcYYPdiIGghTHyAIz6NorTb0A+Z6Pd4FoMgj14SK+dW+S3l5IT7jdA2bygKbo4 BovPnwI91FfSSc+IlzSjswdCUsR/tVqhwKhRl1KsgRsYfpXMzOv72ajIWVjMMaQRbTtt 9Z7MVX07tpuxObP0WMcFQPOlRUH5a1eJFM8x+dEXDsl2IU1TjAJA43b3JjbHY6rKyjDw INsV1YHvOwRe1sGbWnd+UoOY/KMB0l7UuHKVjq9jefrj0yBaUMYvvqk2zCAGoqGu2N0I rxlh7RIx9WBzqzrkihGVW9dp9UGZJOqqEqk1f1OIFzfCFe5d4ilmfnkViycQyNpeSP8+ pyfQ== X-Forwarded-Encrypted: i=1; AJvYcCUU43ibPDt6cva8ah8VSl3fQ2g8r9vAysiZgFf2dICeIlT8SALSvAAPfDlG4YrIaa+VkwpT2Xan5byXugU=@vger.kernel.org X-Gm-Message-State: AOJu0YxmNVLYt3CAZvQPqg7pdYcCXCeTyQXYt73BLFCiB/xURwSYfqwn GRW0VVs6lBiN5z8LfOZzPVHrVrTy4x7ZqCNqvhOd/uZQ+zmKoMYmu+wAQ0k1nEsl4nKpv2g9pLo /tu5KbUuRRw== X-Google-Smtp-Source: AGHT+IE6eVlzja4UQ5/pkJgOkZTTiAGzuIai/Hfr0TKpmjMhTj2VL9yJ26YOe2smGEyiD4kOc55+w++vd0Xw X-Received: from dybqm12.prod.google.com ([2002:a05:7301:670c:b0:2a4:5ebc:ca00]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:120e:b0:298:485d:5571 with SMTP id d9443c01a7336-2984edee8a0mr62542065ad.54.1763004143292; Wed, 12 Nov 2025 19:22:23 -0800 (PST) Date: Wed, 12 Nov 2025 19:20:35 -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: <20251113032040.1994090-48-irogers@google.com> Subject: [PATCH v8 47/52] perf jevents: Add local/remote miss latency metrics 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" Derive from CBOX/CHA occupancy and inserts the average latency as is provided in Intel's uncore performance monitoring reference. Signed-off-by: Ian Rogers --- tools/perf/pmu-events/intel_metrics.py | 70 ++++++++++++++++++++++++-- 1 file changed, 67 insertions(+), 3 deletions(-) diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events= /intel_metrics.py index 118fe0fc05a3..037f9b2ea1b6 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -6,9 +6,10 @@ import math import os import re from typing import Optional -from metric import (d_ratio, has_event, max, CheckPmu, Event, JsonEncodeMe= tric, - JsonEncodeMetricGroupDescriptions, Literal, LoadEvents, - Metric, MetricConstraint, MetricGroup, MetricRef, Sele= ct) +from metric import (d_ratio, has_event, max, source_count, CheckPmu, Event, + JsonEncodeMetric, JsonEncodeMetricGroupDescriptions, + Literal, LoadEvents, Metric, MetricConstraint, MetricG= roup, + MetricRef, Select) =20 # Global command line arguments. _args =3D None @@ -624,6 +625,68 @@ def IntelL2() -> Optional[MetricGroup]: ], description=3D"L2 data cache analysis") =20 =20 +def IntelMissLat() -> Optional[MetricGroup]: + try: + ticks =3D Event("UNC_CHA_CLOCKTICKS", "UNC_C_CLOCKTICKS") + data_rd_loc_occ =3D Event("UNC_CHA_TOR_OCCUPANCY.IA_MISS_DRD_LOCAL= ", + "UNC_CHA_TOR_OCCUPANCY.IA_MISS", + "UNC_C_TOR_OCCUPANCY.MISS_LOCAL_OPCODE", + "UNC_C_TOR_OCCUPANCY.MISS_OPCODE") + data_rd_loc_ins =3D Event("UNC_CHA_TOR_INSERTS.IA_MISS_DRD_LOCAL", + "UNC_CHA_TOR_INSERTS.IA_MISS", + "UNC_C_TOR_INSERTS.MISS_LOCAL_OPCODE", + "UNC_C_TOR_INSERTS.MISS_OPCODE") + data_rd_rem_occ =3D Event("UNC_CHA_TOR_OCCUPANCY.IA_MISS_DRD_REMOT= E", + "UNC_CHA_TOR_OCCUPANCY.IA_MISS", + "UNC_C_TOR_OCCUPANCY.MISS_REMOTE_OPCODE", + "UNC_C_TOR_OCCUPANCY.NID_MISS_OPCODE") + data_rd_rem_ins =3D Event("UNC_CHA_TOR_INSERTS.IA_MISS_DRD_REMOTE", + "UNC_CHA_TOR_INSERTS.IA_MISS", + "UNC_C_TOR_INSERTS.MISS_REMOTE_OPCODE", + "UNC_C_TOR_INSERTS.NID_MISS_OPCODE") + except: + return None + + if (data_rd_loc_occ.name =3D=3D "UNC_C_TOR_OCCUPANCY.MISS_LOCAL_OPCODE= " or + data_rd_loc_occ.name =3D=3D "UNC_C_TOR_OCCUPANCY.MISS_OPCODE"): + data_rd =3D 0x182 + for e in [data_rd_loc_occ, data_rd_loc_ins, data_rd_rem_occ, data_= rd_rem_ins]: + e.name +=3D f"/filter_opc=3D{hex(data_rd)}/" + elif data_rd_loc_occ.name =3D=3D "UNC_CHA_TOR_OCCUPANCY.IA_MISS": + # Demand Data Read - Full cache-line read requests from core for + # lines to be cached in S or E, typically for data + demand_data_rd =3D 0x202 + # LLC Prefetch Data - Uncore will first look up the line in the + # LLC; for a cache hit, the LRU will be updated, on a miss, the + # DRd will be initiated + llc_prefetch_data =3D 0x25a + local_filter =3D (f"/filter_opc0=3D{hex(demand_data_rd)}," + f"filter_opc1=3D{hex(llc_prefetch_data)}," + "filter_loc,filter_nm,filter_not_nm/") + remote_filter =3D (f"/filter_opc0=3D{hex(demand_data_rd)}," + f"filter_opc1=3D{hex(llc_prefetch_data)}," + "filter_rem,filter_nm,filter_not_nm/") + for e in [data_rd_loc_occ, data_rd_loc_ins]: + e.name +=3D local_filter + for e in [data_rd_rem_occ, data_rd_rem_ins]: + e.name +=3D remote_filter + else: + assert data_rd_loc_occ.name =3D=3D "UNC_CHA_TOR_OCCUPANCY.IA_MISS_= DRD_LOCAL", data_rd_loc_occ + + ticks_per_cha =3D ticks / source_count(data_rd_loc_ins) + loc_lat =3D interval_sec * 1e9 * data_rd_loc_occ / \ + (ticks_per_cha * data_rd_loc_ins) + ticks_per_cha =3D ticks / source_count(data_rd_rem_ins) + rem_lat =3D interval_sec * 1e9 * data_rd_rem_occ / \ + (ticks_per_cha * data_rd_rem_ins) + return MetricGroup("lpm_miss_lat", [ + Metric("lpm_miss_lat_loc", "Local to a socket miss latency in nano= seconds", + loc_lat, "ns"), + Metric("lpm_miss_lat_rem", "Remote to a socket miss latency in nan= oseconds", + rem_lat, "ns"), + ]) + + def IntelMlp() -> Optional[Metric]: try: l1d =3D Event("L1D_PEND_MISS.PENDING") @@ -1005,6 +1068,7 @@ def main() -> None: IntelIlp(), IntelL2(), IntelLdSt(), + IntelMissLat(), IntelMlp(), IntelPorts(), IntelSwpf(), --=20 2.51.2.1041.gc1ab5b90ca-goog