From nobody Mon Feb 9 09:10:01 2026 Received: from mail-dl1-f74.google.com (mail-dl1-f74.google.com [74.125.82.74]) (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 63078364EBE for ; Tue, 27 Jan 2026 18:46:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769539587; cv=none; b=ohOqZuLDzpWAKZbztko/VA7K3INpxn8lsP7v6DY9OS+Ou41+u5dQqJTjVCASiYQXaeY8cVqEMq/qCNJ1IE1yLTzuEOP8ewvoBZkmCcjsiE30M7BW4TnTMCmppZVnXm3/ZgoVLbJLZ+GWuBaFQLLtAjf6xWYz9SyjnIVTxviekNM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769539587; 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=jLo87OMDkDYAbRSUnJo1ZQJBYWZoq7tfeDuZbkStLtXCEjVGEb0hHrh91PeY7gpK/u5ZUg6NlBlpIGbZ8E4aFXkKLSQPAWNX/KUVTH7l5CextYYtnSYN8iqNm/pyxEwid69UNf1R85/NQ/w4sH0dOqIg4KDn2CmmAYs5x3iEJjI= 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=TSuMD/SH; arc=none smtp.client-ip=74.125.82.74 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="TSuMD/SH" Received: by mail-dl1-f74.google.com with SMTP id a92af1059eb24-124a5098029so2641517c88.0 for ; Tue, 27 Jan 2026 10:46:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1769539586; x=1770144386; 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=TSuMD/SHhCDH2Kl40+pzXUy9B/RqpQJptBTgtyxqYUv1CVlpdzVM92Q+79knv+1suT I2h+dBYt3G9PWVOvU+Laaf2Xpj/wOh9zi60sQQ7XduVDX9outLFbPQyFlFvibixtLiJA GlIDCZgV5/sC5f7calk/lh/UJUtWMgNX9o1Qh/yJkGQYsiKCJ0h4stOGohqh4uKhV4K9 eYD9UE97YmZVvDjeBOaVqajfjSIhSlpd2u9ClJkmM6jeyX85Ua18RYLKosjMKzfhlFhw 3CYfel/tnm52uR3W46CWzqXCRPpVBRUaBAZQBWH+v1Q+fHudNxEjypN8pY0FYx62exSl 2yCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769539586; x=1770144386; 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=p6JYkUYRLiIzuz4mv3Zm1v4jDwfM4O7Qu8o7yF99hV/IRUEazwxv1o/PPBAx++27r+ vTEVKQpQ6E2pCwSGdr2IztOEGKooETlY1twKgT9oqhhI4IYc+vLKYHVZo9XnPfEfOfzE jmJBru13vi/l4pQBmYwD0XTs3mEd2vue1Z7y0dpVYDOJy4YRgu+YJ4Rzopq26Uv6Ommi Qsdw8FY14xW9LbkhxEkmXWMuzphz01jCilt239eQiuGhuSj0NiZoU13zIYN+rWAoGJhs 57MRFSD+VOp/RvjuX+X+/2lnSFvW3KbVrzBMIdCSD0jdhPT7sXqqO0tF9KaEcqzjgTvE Qabg== X-Forwarded-Encrypted: i=1; AJvYcCUNaL7NMmsH4jQHh+iLPayM4OVPhPzXTEMM3WYBQy7oTtZtz4rYJka26Ge7AkF9WR4/AaBadVh2nTMJYDk=@vger.kernel.org X-Gm-Message-State: AOJu0YzsMWRAQhhe0G472FRN6antlxXW/zN80ahlMc3CujnRLsWsAzHB MkGOIDTYAq5WRqS5eykw4v0t7VL83qtOON/Bjfr/Irrv9F9ZnbWqzmP2f8Xuxpwmho74pBCWZPf IIX0qR+8ljw== X-Received: from dlbbz1.prod.google.com ([2002:a05:7022:2381:b0:11f:3484:4f15]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7022:786:b0:11d:f440:b758 with SMTP id a92af1059eb24-124a00f496dmr1951656c88.25.1769539585577; Tue, 27 Jan 2026 10:46:25 -0800 (PST) Date: Tue, 27 Jan 2026 10:45:02 -0800 In-Reply-To: <20260127184506.3059493-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260127184506.3059493-1-irogers@google.com> X-Mailer: git-send-email 2.52.0.457.g6b5491de43-goog Message-ID: <20260127184506.3059493-32-irogers@google.com> Subject: [PATCH v11 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 , 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