From nobody Mon Feb 9 06:25:44 2026 Received: from mail-dy1-f202.google.com (mail-dy1-f202.google.com [74.125.82.202]) (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 60AD6336ECD for ; Thu, 8 Jan 2026 19:12:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767899547; cv=none; b=ZMVXc5khBezWtzjJMw0kR6z+Mj0vpFhoUz0G1kWVCMI5D1KBwCdkJpgm6UMvR+PAnrGhkeGAkxGAURHHEuxGcta6MyW+TU5H4BYIHN6ws8zeHJjHANiZDPWJ2oYfQ/KIwLG0EH6YoosSHlq7BrRAwz6NiXG9LlUo5pfiZwGmzAU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767899547; c=relaxed/simple; bh=w/E20u8/Wao9eymMi66Gt2Oyo3Q+Ckqd/d41pO69OCQ=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=YTL/No4BOofkh7VxMkKSAHcHJ4CF/IgcvbCGMkMDZyOFgsFvRvvsX1muK9yK/fR8ac6jl6UQKt3/a6MieGfjP/5EUwYEbM+Xg9fPccRQXg01B6CDvl5Ol23Lh0FIzYIe3HgbcMWzlD6ep/BMHXCY/Zy2PWSJUoLMqzfB7/bG4n0= 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=tastYZPf; arc=none smtp.client-ip=74.125.82.202 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="tastYZPf" Received: by mail-dy1-f202.google.com with SMTP id 5a478bee46e88-2ac3019faadso215459eec.1 for ; Thu, 08 Jan 2026 11:12:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1767899544; x=1768504344; 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=bkrL8HvCBil8dXshWsOcY3GoMPnFAn1ScNAR1TTPj0A=; b=tastYZPfY054mJst4BWTL0ulzI4lN/7ax8hzDPJbtBv6QO9Y+CCUiVq8mJslZ8we7g /5GDHu7lN/IDWzCHuT95xNyqD+843ljZDOyncR8KZvOVHAxFuYEJLRFv7ZNIZWH7Vj// BaDOn0Poe/po3QyJA4SYsMbw1Gwzh8+HU6rm6/bu1MiRa1Au5bS/T1eiKOv+8ixDQytB ZaoAoCnvtNt2KVR9iqsGT5hm1sNzNR5JRn92+LJiQYX5vyM/ns8lbU0iZqLor2BjYWnJ 9fK9MLx69bl/JQUbrESTYxmfDq/VJ8GiLfvGcdGcHZ6xS+ymhCXrL3bD2eLqkIThwKXd Efyg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767899544; x=1768504344; 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=bkrL8HvCBil8dXshWsOcY3GoMPnFAn1ScNAR1TTPj0A=; b=AOTTBn2spR/7TVS3epHDOnBgixk6abCb4IVV+8+EhDiXDCCgN52sGugZ24gnggRBSl UhlVtAxTwRk8DW0jPdYDy0OwdXCQFkNK6+/Yy6gTEpqAzypMUi9tCDUsI4QzZeQ/pN4L uglFn08KHd9Td9Ftm9sjF7V4J90XOtRlzZxaKkawYfx2Ky9T1Ej5FNAW5e6+YEAq6uRK 91zJm57tE0s/w1sqWSbrBR0glGVhcJNuWPa4qtLFXXDksi6bhxhqsJHXhaPkjAvh+ReD o+GqLvOJUU3aPi6CfF7nxoMDqZFyCPUiJK3TKuuN/DvLeZnfZQEF0MoWUbvAAIw9vWG5 SBdg== X-Forwarded-Encrypted: i=1; AJvYcCUiuQCgNJO5R4bwhJ32ktwg8PW35ld1n2yk54u9Rk25xmGh/Ni9uRE+M6b1B4dgvgHBXbF5Jdz3U25QTgM=@vger.kernel.org X-Gm-Message-State: AOJu0YyU10HcYDidmiNzUhxV3kqCx4cAeJ297JGRg3PgIhkob/yvPTr8 ET1nijpCBZOfw2icotHVJq/ldChyzSx8SWqwarMuvFXrx3/DzPaNk2zjGYfEV7b0JKiiwExcrRn 1Yvp3gbuveg== X-Google-Smtp-Source: AGHT+IHegIoREH++X6aUzl23BbuBO+jS8yBxk/oknWyBIcHEcFfNG6Lhzrq0bId60XFzdVKmKUG0tg37zfxP X-Received: from dybba30.prod.google.com ([2002:a05:7300:5b9e:b0:2b0:7818:6477]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7301:6790:b0:2b0:59da:f798 with SMTP id 5a478bee46e88-2b17d294b83mr7897975eec.21.1767899544207; Thu, 08 Jan 2026 11:12:24 -0800 (PST) Date: Thu, 8 Jan 2026 11:11:01 -0800 In-Reply-To: <20260108191105.695131-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260108191105.695131-1-irogers@google.com> X-Mailer: git-send-email 2.52.0.457.g6b5491de43-goog Message-ID: <20260108191105.695131-32-irogers@google.com> Subject: [PATCH v10 31/35] 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. Tested-by: Thomas Falcon 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 2.52.0.457.g6b5491de43-goog