From nobody Wed Dec 17 10:47:58 2025 Received: from mail-oa1-f73.google.com (mail-oa1-f73.google.com [209.85.160.73]) (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 B81F91F099B for ; Thu, 27 Mar 2025 22:24:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743114255; cv=none; b=ooMYlFF/n5cCWkjGoxZ5hIrsfJB8HgOR+CjKWAgQvtWBB2w88YzA+fRLQ6ivhExDukysCzPHeLYhAYleLJXD/D0fEcgxzTvRWqX5FQpkYCofvbVpD0f0t9E+SG1OnLdjYqNDX9sb1lUjYSPRqUTA/SWoV7P9NF2RUzdXJg+Ua/k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743114255; c=relaxed/simple; bh=L5mJQ+BRT1QiXSKdVrmBx7xsuwXx8g3al+o+t1Lrv0g=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=leEh+6UxCZog2Sxe/wUM5lVW8os8bamywPbqyiI714U/0qLWJodmcRlI9NATHRmapGpB08kkPG/+xJopTnawsVNRwudQ911Jz5kNg9ExtUlLLIA5gXTRWTEsdB+rreFb4epxQS9SmdK9AK5V0p9zL6mX2jtba3wndaunwk9tlSM= 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=hFaC8OtQ; arc=none smtp.client-ip=209.85.160.73 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="hFaC8OtQ" Received: by mail-oa1-f73.google.com with SMTP id 586e51a60fabf-2c2339b26fcso993250fac.3 for ; Thu, 27 Mar 2025 15:24:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1743114245; x=1743719045; darn=vger.kernel.org; h=content-transfer-encoding:to:from:subject:message-id:references :mime-version:in-reply-to:date:from:to:cc:subject:date:message-id :reply-to; bh=tNrRdUaD7vgPa0e9i1le+jt9v0ty3fdbMnz1aoj3OJ8=; b=hFaC8OtQFkJtU6c0cWbvLL2Qz9XiNNvU5ZBqZiPsyVY0lS3dxoyHCAFAPLSYBIl624 TZcaDtNAuqK7ELNSavJFS8BWxN1QqI0raGBLkw9vamaK+4hBKZua5wH49JZ9M88DjAfi BkwOCE6nyqprugFXYoRROzz1mwhbFKTyIhaA0EnCaAK9VhoYqlLBAm865lCiPbPP/WVP PjIlSjJLwTgi4gOPUPKrSHcxu3smQP4ki5fZ/81Jq6qfNv7Bs987ZZ2KUx5Co2Jf013c qcchCeBm056dUln0sxnp4ErRidkiRcu/1Lom29KuxMF9IJDK57WX7Ou9kkgX9JI3p4E/ BI2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743114245; x=1743719045; h=content-transfer-encoding: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=tNrRdUaD7vgPa0e9i1le+jt9v0ty3fdbMnz1aoj3OJ8=; b=UeIVrL0VmjCwbGDeGehUPsxQ3dx8QYETeTyGSzyVVgnzLfNhAOVZiWn7LWmnkyTIcW sPiABMl62LnyULV2zQ3NgW9NiuBbmJefTES/q5P7phJJUsCPbvyTXEwog8AggUCFKBAS 8IZLC5luASEF7/PDHjnZ9DJLORhb77twzJOdjAYBm1vZbJezW2hy6Nufb1lbwd0qRLrz JFvGrFDsaJ69ImCoNR3rOkAhhqrA6M0pjW3cD781nDP+vImgj1t7yWWFoAsPJEpjRy6X 4T83uEyj998Ph7nR7hGmO4llK/AQBkCQ2F+HAR8Pu02oi2213m4NCigO5nAJ1P2SyxZ+ t/mA== X-Forwarded-Encrypted: i=1; AJvYcCVLJRytKeJ4JIigq3Yf5cPCw0GnJwOaMq61V2Rb6FhxX2d4JEVUoWBEvQY7g471Jb14/+ZmHoBk8wc1jbU=@vger.kernel.org X-Gm-Message-State: AOJu0YyncGmres7mp0nFbkyJu0+o1sUA2JU3pSjKFPAeFXB8Ep/THoMg hI6M1IjCe3muGrmXww+uMP+Q/DdNtv+aqJxmABsZVNoVGBZTNhnFa+2lVJJcV6GAbLuMlXTaaxe nKsY9qQ== X-Google-Smtp-Source: AGHT+IGYeGdLwwlZnaBLXWJvUEX8ZcEPGMIAssE106M7diFAYJeQCy1hTda3ZtZwMs7XOyQDKVBYwC+nJPju X-Received: from oabxj1.prod.google.com ([2002:a05:6870:4f81:b0:2bc:69a2:7ea5]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6870:968e:b0:29e:5297:a2a7 with SMTP id 586e51a60fabf-2c84818f582mr3225822fac.30.1743114245677; Thu, 27 Mar 2025 15:24:05 -0700 (PDT) Date: Thu, 27 Mar 2025 15:23:09 -0700 In-Reply-To: <20250327222331.117701-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250327222331.117701-1-irogers@google.com> X-Mailer: git-send-email 2.49.0.472.ge94155a9ec-goog Message-ID: <20250327222331.117701-15-irogers@google.com> Subject: [PATCH v4 14/35] perf vendor events: Update haswell metrics 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 , "=?UTF-8?q?Andreas=20F=C3=A4rber?=" , Manivannan Sadhasivam , Maxime Coquelin , Alexandre Torgue , Caleb Biggers , Weilin Wang , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Perry Taylor , Thomas Falcon Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Switch to metrics generated from the TMA spreadsheet. Minor threshold simplification. Signed-off-by: Ian Rogers --- .../arch/x86/haswell/hsw-metrics.json | 206 +++++++++--------- 1 file changed, 102 insertions(+), 104 deletions(-) diff --git a/tools/perf/pmu-events/arch/x86/haswell/hsw-metrics.json b/tool= s/perf/pmu-events/arch/x86/haswell/hsw-metrics.json index 0c1040b7e38c..b26ea70a3628 100644 --- a/tools/perf/pmu-events/arch/x86/haswell/hsw-metrics.json +++ b/tools/perf/pmu-events/arch/x86/haswell/hsw-metrics.json @@ -74,12 +74,12 @@ "MetricExpr": "LD_BLOCKS_PARTIAL.ADDRESS_ALIAS / tma_info_thread_c= lks", "MetricGroup": "TopdownL4;tma_L4_group;tma_l1_bound_group", "MetricName": "tma_4k_aliasing", - "MetricThreshold": "tma_4k_aliasing > 0.2 & tma_l1_bound > 0.1 & t= ma_memory_bound > 0.2 & tma_backend_bound > 0.2", - "PublicDescription": "This metric estimates how often memory load = accesses were aliased by preceding stores (in program order) with a 4K addr= ess offset. False match is possible; which incur a few cycles load re-issue= . However; the short re-issue duration is often hidden by the out-of-order = core and HW optimizations; hence a user may safely ignore a high value of t= his metric unless it manages to propagate up into parent nodes of the hiera= rchy (e.g. to L1_Bound)", + "MetricThreshold": "tma_4k_aliasing > 0.2 & (tma_l1_bound > 0.1 & = (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates how often memory load = accesses were aliased by preceding stores (in program order) with a 4K addr= ess offset. False match is possible; which incur a few cycles load re-issue= . However; the short re-issue duration is often hidden by the out-of-order = core and HW optimizations; hence a user may safely ignore a high value of t= his metric unless it manages to propagate up into parent nodes of the hiera= rchy (e.g. to L1_Bound).", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution ports for ALU operations", + "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution ports for ALU operations.", "MetricConstraint": "NO_GROUP_EVENTS_NMI", "MetricExpr": "(UOPS_DISPATCHED_PORT.PORT_0 + UOPS_DISPATCHED_PORT= .PORT_1 + UOPS_DISPATCHED_PORT.PORT_5 + UOPS_DISPATCHED_PORT.PORT_6) / tma_= info_thread_slots", "MetricGroup": "TopdownL5;tma_L5_group;tma_ports_utilized_3m_group= ", @@ -92,8 +92,8 @@ "MetricExpr": "66 * OTHER_ASSISTS.ANY_WB_ASSIST / tma_info_thread_= slots", "MetricGroup": "BvIO;TopdownL4;tma_L4_group;tma_microcode_sequence= r_group", "MetricName": "tma_assists", - "MetricThreshold": "tma_assists > 0.1 & tma_microcode_sequencer > = 0.05 & tma_heavy_operations > 0.1", - "PublicDescription": "This metric estimates fraction of slots the = CPU retired uops delivered by the Microcode_Sequencer as a result of Assist= s. Assists are long sequences of uops that are required in certain corner-c= ases for operations that cannot be handled natively by the execution pipeli= ne. For example; when working with very small floating point values (so-cal= led Denormals); the FP units are not set up to perform these operations nat= ively. Instead; a sequence of instructions to perform the computation on th= e Denormals is injected into the pipeline. Since these microcode sequences = might be dozens of uops long; Assists can be extremely deleterious to perfo= rmance and they can be avoided in many cases. Sample with: OTHER_ASSISTS.AN= Y_WB_ASSIST", + "MetricThreshold": "tma_assists > 0.1 & (tma_microcode_sequencer >= 0.05 & tma_heavy_operations > 0.1)", + "PublicDescription": "This metric estimates fraction of slots the = CPU retired uops delivered by the Microcode_Sequencer as a result of Assist= s. Assists are long sequences of uops that are required in certain corner-c= ases for operations that cannot be handled natively by the execution pipeli= ne. For example; when working with very small floating point values (so-cal= led Denormals); the FP units are not set up to perform these operations nat= ively. Instead; a sequence of instructions to perform the computation on th= e Denormals is injected into the pipeline. Since these microcode sequences = might be dozens of uops long; Assists can be extremely deleterious to perfo= rmance and they can be avoided in many cases. Sample with: OTHER_ASSISTS.AN= Y", "ScaleUnit": "100%" }, { @@ -104,7 +104,7 @@ "MetricName": "tma_backend_bound", "MetricThreshold": "tma_backend_bound > 0.2", "MetricgroupNoGroup": "TopdownL1", - "PublicDescription": "This category represents fraction of slots w= here no uops are being delivered due to a lack of required resources for ac= cepting new uops in the Backend. Backend is the portion of the processor co= re where the out-of-order scheduler dispatches ready uops into their respec= tive execution units; and once completed these uops get retired according t= o program order. For example; stalls due to data-cache misses or stalls due= to the divider unit being overloaded are both categorized under Backend Bo= und. Backend Bound is further divided into two main categories: Memory Boun= d and Core Bound", + "PublicDescription": "This category represents fraction of slots w= here no uops are being delivered due to a lack of required resources for ac= cepting new uops in the Backend. Backend is the portion of the processor co= re where the out-of-order scheduler dispatches ready uops into their respec= tive execution units; and once completed these uops get retired according t= o program order. For example; stalls due to data-cache misses or stalls due= to the divider unit being overloaded are both categorized under Backend Bo= und. Backend Bound is further divided into two main categories: Memory Boun= d and Core Bound.", "ScaleUnit": "100%" }, { @@ -114,7 +114,7 @@ "MetricName": "tma_bad_speculation", "MetricThreshold": "tma_bad_speculation > 0.15", "MetricgroupNoGroup": "TopdownL1", - "PublicDescription": "This category represents fraction of slots w= asted due to incorrect speculations. This include slots used to issue uops = that do not eventually get retired and slots for which the issue-pipeline w= as blocked due to recovery from earlier incorrect speculation. For example;= wasted work due to miss-predicted branches are categorized under Bad Specu= lation category. Incorrect data speculation followed by Memory Ordering Nuk= es is another example", + "PublicDescription": "This category represents fraction of slots w= asted due to incorrect speculations. This include slots used to issue uops = that do not eventually get retired and slots for which the issue-pipeline w= as blocked due to recovery from earlier incorrect speculation. For example;= wasted work due to miss-predicted branches are categorized under Bad Specu= lation category. Incorrect data speculation followed by Memory Ordering Nuk= es is another example.", "ScaleUnit": "100%" }, { @@ -125,7 +125,7 @@ "MetricName": "tma_branch_mispredicts", "MetricThreshold": "tma_branch_mispredicts > 0.1 & tma_bad_specula= tion > 0.15", "MetricgroupNoGroup": "TopdownL2", - "PublicDescription": "This metric represents fraction of slots the= CPU has wasted due to Branch Misprediction. These slots are either wasted= by uops fetched from an incorrectly speculated program path; or stalls whe= n the out-of-order part of the machine needs to recover its state from a sp= eculative path. Sample with: BR_MISP_RETIRED.ALL_BRANCHES", + "PublicDescription": "This metric represents fraction of slots the= CPU has wasted due to Branch Misprediction. These slots are either wasted= by uops fetched from an incorrectly speculated program path; or stalls whe= n the out-of-order part of the machine needs to recover its state from a sp= eculative path. Sample with: BR_MISP_RETIRED.ALL_BRANCHES. Related metrics:= tma_info_bad_spec_branch_misprediction_cost, tma_mispredicts_resteers", "ScaleUnit": "100%" }, { @@ -133,8 +133,8 @@ "MetricExpr": "12 * (BR_MISP_RETIRED.ALL_BRANCHES + MACHINE_CLEARS= .COUNT + BACLEARS.ANY) / tma_info_thread_clks", "MetricGroup": "FetchLat;TopdownL3;tma_L3_group;tma_fetch_latency_= group", "MetricName": "tma_branch_resteers", - "MetricThreshold": "tma_branch_resteers > 0.05 & tma_fetch_latency= > 0.1 & tma_frontend_bound > 0.15", - "PublicDescription": "This metric represents fraction of cycles th= e CPU was stalled due to Branch Resteers. Branch Resteers estimates the Fro= ntend delay in fetching operations from corrected path; following all sorts= of miss-predicted branches. For example; branchy code with lots of miss-pr= edictions might get categorized under Branch Resteers. Note the value of th= is node may overlap with its siblings. Sample with: BR_MISP_RETIRED.ALL_BRA= NCHES. Related metrics: tma_l3_hit_latency, tma_store_latency", + "MetricThreshold": "tma_branch_resteers > 0.05 & (tma_fetch_latenc= y > 0.1 & tma_frontend_bound > 0.15)", + "PublicDescription": "This metric represents fraction of cycles th= e CPU was stalled due to Branch Resteers. Branch Resteers estimates the Fro= ntend delay in fetching operations from corrected path; following all sorts= of miss-predicted branches. For example; branchy code with lots of miss-pr= edictions might get categorized under Branch Resteers. Note the value of th= is node may overlap with its siblings. Sample with: BR_MISP_RETIRED.ALL_BRA= NCHES", "ScaleUnit": "100%" }, { @@ -143,8 +143,8 @@ "MetricExpr": "max(0, tma_microcode_sequencer - tma_assists)", "MetricGroup": "TopdownL4;tma_L4_group;tma_microcode_sequencer_gro= up", "MetricName": "tma_cisc", - "MetricThreshold": "tma_cisc > 0.1 & tma_microcode_sequencer > 0.0= 5 & tma_heavy_operations > 0.1", - "PublicDescription": "This metric estimates fraction of cycles the= CPU retired uops originated from CISC (complex instruction set computer) i= nstruction. A CISC instruction has multiple uops that are required to perfo= rm the instruction's functionality as in the case of read-modify-write as a= n example. Since these instructions require multiple uops they may or may n= ot imply sub-optimal use of machine resources", + "MetricThreshold": "tma_cisc > 0.1 & (tma_microcode_sequencer > 0.= 05 & tma_heavy_operations > 0.1)", + "PublicDescription": "This metric estimates fraction of cycles the= CPU retired uops originated from CISC (complex instruction set computer) i= nstruction. A CISC instruction has multiple uops that are required to perfo= rm the instruction's functionality as in the case of read-modify-write as a= n example. Since these instructions require multiple uops they may or may n= ot imply sub-optimal use of machine resources.", "ScaleUnit": "100%" }, { @@ -153,8 +153,8 @@ "MetricExpr": "(60 * (MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_HITM * (1 = + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_LOAD_= UOPS_RETIRED.L3_HIT + MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_HIT + MEM_LOAD_UOPS= _L3_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_MISS + MEM_LO= AD_UOPS_RETIRED.L3_MISS))) + 43 * (MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_MISS *= (1 + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_L= OAD_UOPS_RETIRED.L3_HIT + MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_HIT + MEM_LOAD_= UOPS_L3_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_MISS + ME= M_LOAD_UOPS_RETIRED.L3_MISS)))) / tma_info_thread_clks", "MetricGroup": "BvMS;DataSharing;LockCont;Offcore;Snoop;TopdownL4;= tma_L4_group;tma_issueSyncxn;tma_l3_bound_group", "MetricName": "tma_contested_accesses", - "MetricThreshold": "tma_contested_accesses > 0.05 & tma_l3_bound >= 0.05 & tma_memory_bound > 0.2 & tma_backend_bound > 0.2", - "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling synchronizations due to contested acce= sses. Contested accesses occur when data written by one Logical Processor a= re read by another Logical Processor on a different Physical Core. Examples= of contested accesses include synchronizations such as locks; true data sh= aring such as modified locked variables; and false sharing. Sample with: ME= M_LOAD_UOPS_L3_HIT_RETIRED.XSNP_HITM, MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_MIS= S. Related metrics: tma_data_sharing, tma_false_sharing, tma_machine_clears= ", + "MetricThreshold": "tma_contested_accesses > 0.05 & (tma_l3_bound = > 0.05 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling synchronizations due to contested acce= sses. Contested accesses occur when data written by one Logical Processor a= re read by another Logical Processor on a different Physical Core. Examples= of contested accesses include synchronizations such as locks; true data sh= aring such as modified locked variables; and false sharing. Sample with: ME= M_LOAD_L3_HIT_RETIRED.XSNP_HITM_PS;MEM_LOAD_L3_HIT_RETIRED.XSNP_MISS_PS. Re= lated metrics: tma_data_sharing, tma_false_sharing, tma_machine_clears, tma= _remote_cache", "ScaleUnit": "100%" }, { @@ -165,7 +165,7 @@ "MetricName": "tma_core_bound", "MetricThreshold": "tma_core_bound > 0.1 & tma_backend_bound > 0.2= ", "MetricgroupNoGroup": "TopdownL2", - "PublicDescription": "This metric represents fraction of slots whe= re Core non-memory issues were of a bottleneck. Shortage in hardware compu= te resources; or dependencies in software's instructions are both categoriz= ed under Core Bound. Hence it may indicate the machine ran out of an out-of= -order resource; certain execution units are overloaded or dependencies in = program's data- or instruction-flow are limiting the performance (e.g. FP-c= hained long-latency arithmetic operations)", + "PublicDescription": "This metric represents fraction of slots whe= re Core non-memory issues were of a bottleneck. Shortage in hardware compu= te resources; or dependencies in software's instructions are both categoriz= ed under Core Bound. Hence it may indicate the machine ran out of an out-of= -order resource; certain execution units are overloaded or dependencies in = program's data- or instruction-flow are limiting the performance (e.g. FP-c= hained long-latency arithmetic operations).", "ScaleUnit": "100%" }, { @@ -174,8 +174,8 @@ "MetricExpr": "43 * (MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_HIT * (1 + = MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_LOAD_UO= PS_RETIRED.L3_HIT + MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_HIT + MEM_LOAD_UOPS_L= 3_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_MISS + MEM_LOAD= _UOPS_RETIRED.L3_MISS))) / tma_info_thread_clks", "MetricGroup": "BvMS;Offcore;Snoop;TopdownL4;tma_L4_group;tma_issu= eSyncxn;tma_l3_bound_group", "MetricName": "tma_data_sharing", - "MetricThreshold": "tma_data_sharing > 0.05 & tma_l3_bound > 0.05 = & tma_memory_bound > 0.2 & tma_backend_bound > 0.2", - "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling synchronizations due to data-sharing a= ccesses. Data shared by multiple Logical Processors (even just read shared)= may cause increased access latency due to cache coherency. Excessive data = sharing can drastically harm multithreaded performance. Sample with: MEM_LO= AD_UOPS_L3_HIT_RETIRED.XSNP_HIT. Related metrics: tma_contested_accesses, t= ma_false_sharing, tma_machine_clears", + "MetricThreshold": "tma_data_sharing > 0.05 & (tma_l3_bound > 0.05= & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling synchronizations due to data-sharing a= ccesses. Data shared by multiple Logical Processors (even just read shared)= may cause increased access latency due to cache coherency. Excessive data = sharing can drastically harm multithreaded performance. Sample with: MEM_LO= AD_L3_HIT_RETIRED.XSNP_HIT_PS. Related metrics: tma_contested_accesses, tma= _false_sharing, tma_machine_clears, tma_remote_cache", "ScaleUnit": "100%" }, { @@ -183,8 +183,8 @@ "MetricExpr": "10 * ARITH.DIVIDER_UOPS / tma_info_core_core_clks", "MetricGroup": "BvCB;TopdownL3;tma_L3_group;tma_core_bound_group", "MetricName": "tma_divider", - "MetricThreshold": "tma_divider > 0.2 & tma_core_bound > 0.1 & tma= _backend_bound > 0.2", - "PublicDescription": "This metric represents fraction of cycles wh= ere the Divider unit was active. Divide and square root instructions are pe= rformed by the Divider unit and can take considerably longer latency than i= nteger or Floating Point addition; subtraction; or multiplication. Sample w= ith: ARITH.DIVIDER_UOPS", + "MetricThreshold": "tma_divider > 0.2 & (tma_core_bound > 0.1 & tm= a_backend_bound > 0.2)", + "PublicDescription": "This metric represents fraction of cycles wh= ere the Divider unit was active. Divide and square root instructions are pe= rformed by the Divider unit and can take considerably longer latency than i= nteger or Floating Point addition; subtraction; or multiplication. Sample w= ith: ARITH.DIVIDER_ACTIVE", "ScaleUnit": "100%" }, { @@ -193,8 +193,8 @@ "MetricExpr": "(1 - MEM_LOAD_UOPS_RETIRED.L3_HIT / (MEM_LOAD_UOPS_= RETIRED.L3_HIT + 7 * MEM_LOAD_UOPS_RETIRED.L3_MISS)) * CYCLE_ACTIVITY.STALL= S_L2_PENDING / tma_info_thread_clks", "MetricGroup": "MemoryBound;TmaL3mem;TopdownL3;tma_L3_group;tma_me= mory_bound_group", "MetricName": "tma_dram_bound", - "MetricThreshold": "tma_dram_bound > 0.1 & tma_memory_bound > 0.2 = & tma_backend_bound > 0.2", - "PublicDescription": "This metric estimates how often the CPU was = stalled on accesses to external memory (DRAM) by loads. Better caching can = improve the latency and increase performance. Sample with: MEM_LOAD_UOPS_RE= TIRED.L3_MISS", + "MetricThreshold": "tma_dram_bound > 0.1 & (tma_memory_bound > 0.2= & tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates how often the CPU was = stalled on accesses to external memory (DRAM) by loads. Better caching can = improve the latency and increase performance. Sample with: MEM_LOAD_UOPS_RE= TIRED.L3_MISS_PS", "ScaleUnit": "100%" }, { @@ -203,7 +203,7 @@ "MetricGroup": "DSB;FetchBW;TopdownL3;tma_L3_group;tma_fetch_bandw= idth_group", "MetricName": "tma_dsb", "MetricThreshold": "tma_dsb > 0.15 & tma_fetch_bandwidth > 0.2", - "PublicDescription": "This metric represents Core fraction of cycl= es in which CPU was likely limited due to DSB (decoded uop cache) fetch pip= eline. For example; inefficient utilization of the DSB cache structure or = bank conflict when reading from it; are categorized here", + "PublicDescription": "This metric represents Core fraction of cycl= es in which CPU was likely limited due to DSB (decoded uop cache) fetch pip= eline. For example; inefficient utilization of the DSB cache structure or = bank conflict when reading from it; are categorized here.", "ScaleUnit": "100%" }, { @@ -211,7 +211,7 @@ "MetricExpr": "DSB2MITE_SWITCHES.PENALTY_CYCLES / tma_info_thread_= clks", "MetricGroup": "DSBmiss;FetchLat;TopdownL3;tma_L3_group;tma_fetch_= latency_group;tma_issueFB", "MetricName": "tma_dsb_switches", - "MetricThreshold": "tma_dsb_switches > 0.05 & tma_fetch_latency > = 0.1 & tma_frontend_bound > 0.15", + "MetricThreshold": "tma_dsb_switches > 0.05 & (tma_fetch_latency >= 0.1 & tma_frontend_bound > 0.15)", "PublicDescription": "This metric represents fraction of cycles th= e CPU was stalled due to switches from DSB to MITE pipelines. The DSB (deco= ded i-cache) is a Uop Cache where the front-end directly delivers Uops (mic= ro operations) avoiding heavy x86 decoding. The DSB pipeline has shorter la= tency and delivered higher bandwidth than the MITE (legacy instruction deco= de pipeline). Switching between the two pipelines can cause penalties hence= this metric measures the exposed penalty. Related metrics: tma_fetch_bandw= idth, tma_info_frontend_dsb_coverage, tma_info_inst_mix_iptb, tma_lcp", "ScaleUnit": "100%" }, @@ -220,8 +220,8 @@ "MetricExpr": "(8 * DTLB_LOAD_MISSES.STLB_HIT + DTLB_LOAD_MISSES.W= ALK_DURATION) / tma_info_thread_clks", "MetricGroup": "BvMT;MemoryTLB;TopdownL4;tma_L4_group;tma_issueTLB= ;tma_l1_bound_group", "MetricName": "tma_dtlb_load", - "MetricThreshold": "tma_dtlb_load > 0.1 & tma_l1_bound > 0.1 & tma= _memory_bound > 0.2 & tma_backend_bound > 0.2", - "PublicDescription": "This metric roughly estimates the fraction o= f cycles where the Data TLB (DTLB) was missed by load accesses. TLBs (Trans= lation Look-aside Buffers) are processor caches for recently used entries o= ut of the Page Tables that are used to map virtual- to physical-addresses b= y the operating system. This metric approximates the potential delay of dem= and loads missing the first-level data TLB (assuming worst case scenario wi= th back to back misses to different pages). This includes hitting in the se= cond-level TLB (STLB) as well as performing a hardware page walk on an STLB= miss. Sample with: MEM_UOPS_RETIRED.STLB_MISS_LOADS. Related metrics: tma_= dtlb_store", + "MetricThreshold": "tma_dtlb_load > 0.1 & (tma_l1_bound > 0.1 & (t= ma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric roughly estimates the fraction o= f cycles where the Data TLB (DTLB) was missed by load accesses. TLBs (Trans= lation Look-aside Buffers) are processor caches for recently used entries o= ut of the Page Tables that are used to map virtual- to physical-addresses b= y the operating system. This metric approximates the potential delay of dem= and loads missing the first-level data TLB (assuming worst case scenario wi= th back to back misses to different pages). This includes hitting in the se= cond-level TLB (STLB) as well as performing a hardware page walk on an STLB= miss. Sample with: MEM_UOPS_RETIRED.STLB_MISS_LOADS_PS. Related metrics: t= ma_dtlb_store", "ScaleUnit": "100%" }, { @@ -229,8 +229,8 @@ "MetricExpr": "(8 * DTLB_STORE_MISSES.STLB_HIT + DTLB_STORE_MISSES= .WALK_DURATION) / tma_info_thread_clks", "MetricGroup": "BvMT;MemoryTLB;TopdownL4;tma_L4_group;tma_issueTLB= ;tma_store_bound_group", "MetricName": "tma_dtlb_store", - "MetricThreshold": "tma_dtlb_store > 0.05 & tma_store_bound > 0.2 = & tma_memory_bound > 0.2 & tma_backend_bound > 0.2", - "PublicDescription": "This metric roughly estimates the fraction o= f cycles spent handling first-level data TLB store misses. As with ordinar= y data caching; focus on improving data locality and reducing working-set s= ize to reduce DTLB overhead. Additionally; consider using profile-guided o= ptimization (PGO) to collocate frequently-used data on the same page. Try = using larger page sizes for large amounts of frequently-used data. Sample w= ith: MEM_UOPS_RETIRED.STLB_MISS_STORES. Related metrics: tma_dtlb_load", + "MetricThreshold": "tma_dtlb_store > 0.05 & (tma_store_bound > 0.2= & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric roughly estimates the fraction o= f cycles spent handling first-level data TLB store misses. As with ordinar= y data caching; focus on improving data locality and reducing working-set s= ize to reduce DTLB overhead. Additionally; consider using profile-guided o= ptimization (PGO) to collocate frequently-used data on the same page. Try = using larger page sizes for large amounts of frequently-used data. Sample w= ith: MEM_UOPS_RETIRED.STLB_MISS_STORES_PS. Related metrics: tma_dtlb_load", "ScaleUnit": "100%" }, { @@ -238,18 +238,18 @@ "MetricExpr": "60 * OFFCORE_RESPONSE.DEMAND_RFO.L3_HIT.HITM_OTHER_= CORE / tma_info_thread_clks", "MetricGroup": "BvMS;DataSharing;LockCont;Offcore;Snoop;TopdownL4;= tma_L4_group;tma_issueSyncxn;tma_store_bound_group", "MetricName": "tma_false_sharing", - "MetricThreshold": "tma_false_sharing > 0.05 & tma_store_bound > 0= .2 & tma_memory_bound > 0.2 & tma_backend_bound > 0.2", - "PublicDescription": "This metric roughly estimates how often CPU = was handling synchronizations due to False Sharing. False Sharing is a mult= ithreading hiccup; where multiple Logical Processors contend on different d= ata-elements mapped into the same cache line. Sample with: MEM_LOAD_UOPS_L3= _HIT_RETIRED.XSNP_HITM, OFFCORE_RESPONSE.DEMAND_RFO.L3_HIT.HITM_OTHER_CORE.= Related metrics: tma_contested_accesses, tma_data_sharing, tma_machine_cle= ars", + "MetricThreshold": "tma_false_sharing > 0.05 & (tma_store_bound > = 0.2 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric roughly estimates how often CPU = was handling synchronizations due to False Sharing. False Sharing is a mult= ithreading hiccup; where multiple Logical Processors contend on different d= ata-elements mapped into the same cache line. Sample with: MEM_LOAD_L3_HIT_= RETIRED.XSNP_HITM_PS;OFFCORE_RESPONSE.DEMAND_RFO.L3_HIT.SNOOP_HITM. Related= metrics: tma_contested_accesses, tma_data_sharing, tma_machine_clears, tma= _remote_cache", "ScaleUnit": "100%" }, { "BriefDescription": "This metric does a *rough estimation* of how = often L1D Fill Buffer unavailability limited additional L1D miss memory acc= ess requests to proceed", "MetricConstraint": "NO_GROUP_EVENTS", - "MetricExpr": "tma_info_memory_load_miss_real_latency * cpu@L1D_PE= ND_MISS.REQUEST_FB_FULL\\,cmask\\=3D0x1@ / tma_info_thread_clks", + "MetricExpr": "tma_info_memory_load_miss_real_latency * cpu@L1D_PE= ND_MISS.REQUEST_FB_FULL\\,cmask\\=3D1@ / tma_info_thread_clks", "MetricGroup": "BvMB;MemoryBW;TopdownL4;tma_L4_group;tma_issueBW;t= ma_issueSL;tma_issueSmSt;tma_l1_bound_group", "MetricName": "tma_fb_full", "MetricThreshold": "tma_fb_full > 0.3", - "PublicDescription": "This metric does a *rough estimation* of how= often L1D Fill Buffer unavailability limited additional L1D miss memory ac= cess requests to proceed. The higher the metric value; the deeper the memor= y hierarchy level the misses are satisfied from (metric values >1 are valid= ). Often it hints on approaching bandwidth limits (to L2 cache; L3 cache or= external memory). Related metrics: tma_info_system_dram_bw_use, tma_mem_ba= ndwidth, tma_sq_full, tma_store_latency", + "PublicDescription": "This metric does a *rough estimation* of how= often L1D Fill Buffer unavailability limited additional L1D miss memory ac= cess requests to proceed. The higher the metric value; the deeper the memor= y hierarchy level the misses are satisfied from (metric values >1 are valid= ). Often it hints on approaching bandwidth limits (to L2 cache; L3 cache or= external memory). Related metrics: tma_info_system_dram_bw_use, tma_mem_ba= ndwidth, tma_sq_full, tma_store_latency, tma_streaming_stores", "ScaleUnit": "100%" }, { @@ -279,33 +279,33 @@ "MetricName": "tma_frontend_bound", "MetricThreshold": "tma_frontend_bound > 0.15", "MetricgroupNoGroup": "TopdownL1", - "PublicDescription": "This category represents fraction of slots w= here the processor's Frontend undersupplies its Backend. Frontend denotes t= he first part of the processor core responsible to fetch operations that ar= e executed later on by the Backend part. Within the Frontend; a branch pred= ictor predicts the next address to fetch; cache-lines are fetched from the = memory subsystem; parsed into instructions; and lastly decoded into micro-o= perations (uops). Ideally the Frontend can issue Pipeline_Width uops every = cycle to the Backend. Frontend Bound denotes unutilized issue-slots when th= ere is no Backend stall; i.e. bubbles where Frontend delivered no uops whil= e Backend could have accepted them. For example; stalls due to instruction-= cache misses would be categorized under Frontend Bound", + "PublicDescription": "This category represents fraction of slots w= here the processor's Frontend undersupplies its Backend. Frontend denotes t= he first part of the processor core responsible to fetch operations that ar= e executed later on by the Backend part. Within the Frontend; a branch pred= ictor predicts the next address to fetch; cache-lines are fetched from the = memory subsystem; parsed into instructions; and lastly decoded into micro-o= perations (uops). Ideally the Frontend can issue Pipeline_Width uops every = cycle to the Backend. Frontend Bound denotes unutilized issue-slots when th= ere is no Backend stall; i.e. bubbles where Frontend delivered no uops whil= e Backend could have accepted them. For example; stalls due to instruction-= cache misses would be categorized under Frontend Bound.", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of slots wher= e the CPU was retiring heavy-weight operations , instructions that require = two or more uops or micro-coded sequences", + "BriefDescription": "This metric represents fraction of slots wher= e the CPU was retiring heavy-weight operations -- instructions that require= two or more uops or micro-coded sequences", "MetricExpr": "tma_microcode_sequencer", "MetricGroup": "Retire;TmaL2;TopdownL2;tma_L2_group;tma_retiring_g= roup", "MetricName": "tma_heavy_operations", "MetricThreshold": "tma_heavy_operations > 0.1", "MetricgroupNoGroup": "TopdownL2", - "PublicDescription": "This metric represents fraction of slots whe= re the CPU was retiring heavy-weight operations , instructions that require= two or more uops or micro-coded sequences. This highly-correlates with the= uop length of these instructions/sequences.([ICL+] Note this may overcount= due to approximation using indirect events; [ADL+])", + "PublicDescription": "This metric represents fraction of slots whe= re the CPU was retiring heavy-weight operations -- instructions that requir= e two or more uops or micro-coded sequences. This highly-correlates with th= e uop length of these instructions/sequences.([ICL+] Note this may overcoun= t due to approximation using indirect events; [ADL+])", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of cycles the= CPU was stalled due to instruction cache misses", + "BriefDescription": "This metric represents fraction of cycles the= CPU was stalled due to instruction cache misses.", "MetricExpr": "ICACHE.IFDATA_STALL / tma_info_thread_clks", "MetricGroup": "BigFootprint;BvBC;FetchLat;IcMiss;TopdownL3;tma_L3= _group;tma_fetch_latency_group", "MetricName": "tma_icache_misses", - "MetricThreshold": "tma_icache_misses > 0.05 & tma_fetch_latency >= 0.1 & tma_frontend_bound > 0.15", + "MetricThreshold": "tma_icache_misses > 0.05 & (tma_fetch_latency = > 0.1 & tma_frontend_bound > 0.15)", "ScaleUnit": "100%" }, { - "BriefDescription": "Instructions per retired Mispredicts for indi= rect CALL or JMP branches (lower number means higher occurrence rate)", + "BriefDescription": "Instructions per retired Mispredicts for indi= rect CALL or JMP branches (lower number means higher occurrence rate).", "MetricExpr": "tma_info_inst_mix_instructions / (UOPS_RETIRED.RETI= RE_SLOTS / UOPS_ISSUED.ANY * BR_MISP_EXEC.INDIRECT)", "MetricGroup": "Bad;BrMispredicts", "MetricName": "tma_info_bad_spec_ipmisp_indirect", - "MetricThreshold": "tma_info_bad_spec_ipmisp_indirect < 1000" + "MetricThreshold": "tma_info_bad_spec_ipmisp_indirect < 1e3" }, { "BriefDescription": "Number of Instructions per non-speculative Br= anch Misprediction (JEClear) (lower number means higher occurrence rate)", @@ -316,7 +316,7 @@ }, { "BriefDescription": "Core actual clocks when any Logical Processor= is active on the Physical Core", - "MetricExpr": "(CPU_CLK_UNHALTED.THREAD_ANY / 2 if #SMT_on else tm= a_info_thread_clks)", + "MetricExpr": "(CPU_CLK_UNHALTED.THREAD / 2 * (1 + CPU_CLK_UNHALTE= D.ONE_THREAD_ACTIVE / CPU_CLK_UNHALTED.REF_XCLK) if #core_wide < 1 else (CP= U_CLK_UNHALTED.THREAD_ANY / 2 if #SMT_on else tma_info_thread_clks))", "MetricGroup": "SMT", "MetricName": "tma_info_core_core_clks" }, @@ -328,7 +328,7 @@ }, { "BriefDescription": "Instruction-Level-Parallelism (average number= of uops executed when there is execution) per thread (logical-processor)", - "MetricExpr": "(UOPS_EXECUTED.CORE / 2 / (cpu@UOPS_EXECUTED.CORE\\= ,cmask\\=3D0x1@ / 2 if #SMT_on else cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x1@= ) if #SMT_on else UOPS_EXECUTED.CORE / (cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D= 0x1@ / 2 if #SMT_on else cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x1@))", + "MetricExpr": "(UOPS_EXECUTED.CORE / 2 / (cpu@UOPS_EXECUTED.CORE\\= ,cmask\\=3D1@ / 2 if #SMT_on else cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D1@) if= #SMT_on else UOPS_EXECUTED.CORE / (cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D1@ /= 2 if #SMT_on else cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D1@))", "MetricGroup": "Backend;Cor;Pipeline;PortsUtil", "MetricName": "tma_info_core_ilp" }, @@ -353,7 +353,7 @@ "MetricName": "tma_info_frontend_tbpc" }, { - "BriefDescription": "Branch instructions per taken branch", + "BriefDescription": "Branch instructions per taken branch.", "MetricExpr": "BR_INST_RETIRED.ALL_BRANCHES / BR_INST_RETIRED.NEAR= _TAKEN", "MetricGroup": "Branches;Fed;PGO", "MetricName": "tma_info_inst_mix_bptkbranch" @@ -398,7 +398,7 @@ "MetricExpr": "INST_RETIRED.ANY / BR_INST_RETIRED.NEAR_TAKEN", "MetricGroup": "Branches;Fed;FetchBW;Frontend;PGO;tma_issueFB", "MetricName": "tma_info_inst_mix_iptb", - "MetricThreshold": "tma_info_inst_mix_iptb < 4 * 2 + 1", + "MetricThreshold": "tma_info_inst_mix_iptb < 9", "PublicDescription": "Instructions per taken branch. Related metri= cs: tma_dsb_switches, tma_fetch_bandwidth, tma_info_frontend_dsb_coverage, = tma_lcp" }, { @@ -502,8 +502,8 @@ "MetricThreshold": "tma_info_memory_tlb_page_walks_utilization > 0= .5" }, { - "BriefDescription": "Average number of Uops retired in cycles wher= e at least one uop has retired", - "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / cpu@UOPS_RETIRED.RETIRE= _SLOTS\\,cmask\\=3D0x1@", + "BriefDescription": "Average number of Uops retired in cycles wher= e at least one uop has retired.", + "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / cpu@UOPS_RETIRED.RETIRE= _SLOTS\\,cmask\\=3D1@", "MetricGroup": "Pipeline;Ret", "MetricName": "tma_info_pipeline_retire" }, @@ -537,14 +537,13 @@ "MetricExpr": "INST_RETIRED.ANY / BR_INST_RETIRED.FAR_BRANCH:u", "MetricGroup": "Branches;OS", "MetricName": "tma_info_system_ipfarbranch", - "MetricThreshold": "tma_info_system_ipfarbranch < 1000000" + "MetricThreshold": "tma_info_system_ipfarbranch < 1e6" }, { "BriefDescription": "Cycles Per Instruction for the Operating Syst= em (OS) Kernel mode", "MetricExpr": "CPU_CLK_UNHALTED.THREAD_P:k / INST_RETIRED.ANY_P:k", "MetricGroup": "OS", - "MetricName": "tma_info_system_kernel_cpi", - "ScaleUnit": "1per_instr" + "MetricName": "tma_info_system_kernel_cpi" }, { "BriefDescription": "Fraction of cycles spent in the Operating Sys= tem (OS) Kernel mode", @@ -592,7 +591,7 @@ "MetricName": "tma_info_system_turbo_utilization" }, { - "BriefDescription": "Per-Logical Processor actual clocks when the = Logical Processor is active", + "BriefDescription": "Per-Logical Processor actual clocks when the = Logical Processor is active.", "MetricExpr": "CPU_CLK_UNHALTED.THREAD", "MetricGroup": "Pipeline", "MetricName": "tma_info_thread_clks" @@ -601,8 +600,7 @@ "BriefDescription": "Cycles Per Instruction (per Logical Processor= )", "MetricExpr": "1 / tma_info_thread_ipc", "MetricGroup": "Mem;Pipeline", - "MetricName": "tma_info_thread_cpi", - "ScaleUnit": "1per_instr" + "MetricName": "tma_info_thread_cpi" }, { "BriefDescription": "Instructions Per Cycle (per Logical Processor= )", @@ -628,14 +626,14 @@ "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / BR_INST_RETIRED.NEAR_TA= KEN", "MetricGroup": "Branches;Fed;FetchBW", "MetricName": "tma_info_thread_uptb", - "MetricThreshold": "tma_info_thread_uptb < 4 * 1.5" + "MetricThreshold": "tma_info_thread_uptb < 6" }, { "BriefDescription": "This metric represents fraction of cycles the= CPU was stalled due to Instruction TLB (ITLB) misses", "MetricExpr": "(14 * ITLB_MISSES.STLB_HIT + ITLB_MISSES.WALK_DURAT= ION) / tma_info_thread_clks", "MetricGroup": "BigFootprint;BvBC;FetchLat;MemoryTLB;TopdownL3;tma= _L3_group;tma_fetch_latency_group", "MetricName": "tma_itlb_misses", - "MetricThreshold": "tma_itlb_misses > 0.05 & tma_fetch_latency > 0= .1 & tma_frontend_bound > 0.15", + "MetricThreshold": "tma_itlb_misses > 0.05 & (tma_fetch_latency > = 0.1 & tma_frontend_bound > 0.15)", "PublicDescription": "This metric represents fraction of cycles th= e CPU was stalled due to Instruction TLB (ITLB) misses. Sample with: ITLB_M= ISSES.WALK_COMPLETED", "ScaleUnit": "100%" }, @@ -644,8 +642,8 @@ "MetricExpr": "max((min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.ST= ALLS_LDM_PENDING) - CYCLE_ACTIVITY.STALLS_L1D_PENDING) / tma_info_thread_cl= ks, 0)", "MetricGroup": "CacheHits;MemoryBound;TmaL3mem;TopdownL3;tma_L3_gr= oup;tma_issueL1;tma_issueMC;tma_memory_bound_group", "MetricName": "tma_l1_bound", - "MetricThreshold": "tma_l1_bound > 0.1 & tma_memory_bound > 0.2 & = tma_backend_bound > 0.2", - "PublicDescription": "This metric estimates how often the CPU was = stalled without loads missing the L1 Data (L1D) cache. The L1D cache typic= ally has the shortest latency. However; in certain cases like loads blocke= d on older stores; a load might suffer due to high latency even though it i= s being satisfied by the L1D. Another example is loads who miss in the TLB.= These cases are characterized by execution unit stalls; while some non-com= pleted demand load lives in the machine without having that demand load mis= sing the L1 cache. Sample with: MEM_LOAD_UOPS_RETIRED.L1_HIT. Related metri= cs: tma_machine_clears, tma_microcode_sequencer, tma_ms_switches, tma_ports= _utilized_1", + "MetricThreshold": "tma_l1_bound > 0.1 & (tma_memory_bound > 0.2 &= tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates how often the CPU was = stalled without loads missing the L1 Data (L1D) cache. The L1D cache typic= ally has the shortest latency. However; in certain cases like loads blocke= d on older stores; a load might suffer due to high latency even though it i= s being satisfied by the L1D. Another example is loads who miss in the TLB.= These cases are characterized by execution unit stalls; while some non-com= pleted demand load lives in the machine without having that demand load mis= sing the L1 cache. Sample with: MEM_LOAD_UOPS_RETIRED.L1_HIT_PS. Related me= trics: tma_clears_resteers, tma_machine_clears, tma_microcode_sequencer, tm= a_ms_switches, tma_ports_utilized_1", "ScaleUnit": "100%" }, { @@ -653,8 +651,8 @@ "MetricExpr": "(CYCLE_ACTIVITY.STALLS_L1D_PENDING - CYCLE_ACTIVITY= .STALLS_L2_PENDING) / tma_info_thread_clks", "MetricGroup": "BvML;CacheHits;MemoryBound;TmaL3mem;TopdownL3;tma_= L3_group;tma_memory_bound_group", "MetricName": "tma_l2_bound", - "MetricThreshold": "tma_l2_bound > 0.05 & tma_memory_bound > 0.2 &= tma_backend_bound > 0.2", - "PublicDescription": "This metric estimates how often the CPU was = stalled due to L2 cache accesses by loads. Avoiding cache misses (i.e. L1 = misses/L2 hits) can improve the latency and increase performance. Sample wi= th: MEM_LOAD_UOPS_RETIRED.L2_HIT", + "MetricThreshold": "tma_l2_bound > 0.05 & (tma_memory_bound > 0.2 = & tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates how often the CPU was = stalled due to L2 cache accesses by loads. Avoiding cache misses (i.e. L1 = misses/L2 hits) can improve the latency and increase performance. Sample wi= th: MEM_LOAD_UOPS_RETIRED.L2_HIT_PS", "ScaleUnit": "100%" }, { @@ -663,8 +661,8 @@ "MetricExpr": "MEM_LOAD_UOPS_RETIRED.L3_HIT / (MEM_LOAD_UOPS_RETIR= ED.L3_HIT + 7 * MEM_LOAD_UOPS_RETIRED.L3_MISS) * CYCLE_ACTIVITY.STALLS_L2_P= ENDING / tma_info_thread_clks", "MetricGroup": "CacheHits;MemoryBound;TmaL3mem;TopdownL3;tma_L3_gr= oup;tma_memory_bound_group", "MetricName": "tma_l3_bound", - "MetricThreshold": "tma_l3_bound > 0.05 & tma_memory_bound > 0.2 &= tma_backend_bound > 0.2", - "PublicDescription": "This metric estimates how often the CPU was = stalled due to loads accesses to L3 cache or contended with a sibling Core.= Avoiding cache misses (i.e. L2 misses/L3 hits) can improve the latency an= d increase performance. Sample with: MEM_LOAD_UOPS_RETIRED.L3_HIT", + "MetricThreshold": "tma_l3_bound > 0.05 & (tma_memory_bound > 0.2 = & tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates how often the CPU was = stalled due to loads accesses to L3 cache or contended with a sibling Core.= Avoiding cache misses (i.e. L2 misses/L3 hits) can improve the latency an= d increase performance. Sample with: MEM_LOAD_UOPS_RETIRED.L3_HIT_PS", "ScaleUnit": "100%" }, { @@ -673,8 +671,8 @@ "MetricExpr": "29 * (MEM_LOAD_UOPS_RETIRED.L3_HIT * (1 + MEM_LOAD_= UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_LOAD_UOPS_RETIRE= D.L3_HIT + MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_HIT + MEM_LOAD_UOPS_L3_HIT_RET= IRED.XSNP_HITM + MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_MISS + MEM_LOAD_UOPS_RET= IRED.L3_MISS))) / tma_info_thread_clks", "MetricGroup": "BvML;MemoryLat;TopdownL4;tma_L4_group;tma_issueLat= ;tma_l3_bound_group", "MetricName": "tma_l3_hit_latency", - "MetricThreshold": "tma_l3_hit_latency > 0.1 & tma_l3_bound > 0.05= & tma_memory_bound > 0.2 & tma_backend_bound > 0.2", - "PublicDescription": "This metric estimates fraction of cycles wit= h demand load accesses that hit the L3 cache under unloaded scenarios (poss= ibly L3 latency limited). Avoiding private cache misses (i.e. L2 misses/L3= hits) will improve the latency; reduce contention with sibling physical co= res and increase performance. Note the value of this node may overlap with= its siblings. Sample with: MEM_LOAD_UOPS_RETIRED.L3_HIT. Related metrics: = tma_branch_resteers, tma_mem_latency, tma_store_latency", + "MetricThreshold": "tma_l3_hit_latency > 0.1 & (tma_l3_bound > 0.0= 5 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates fraction of cycles wit= h demand load accesses that hit the L3 cache under unloaded scenarios (poss= ibly L3 latency limited). Avoiding private cache misses (i.e. L2 misses/L3= hits) will improve the latency; reduce contention with sibling physical co= res and increase performance. Note the value of this node may overlap with= its siblings. Sample with: MEM_LOAD_UOPS_RETIRED.L3_HIT_PS. Related metric= s: tma_mem_latency", "ScaleUnit": "100%" }, { @@ -682,18 +680,18 @@ "MetricExpr": "ILD_STALL.LCP / tma_info_thread_clks", "MetricGroup": "FetchLat;TopdownL3;tma_L3_group;tma_fetch_latency_= group;tma_issueFB", "MetricName": "tma_lcp", - "MetricThreshold": "tma_lcp > 0.05 & tma_fetch_latency > 0.1 & tma= _frontend_bound > 0.15", - "PublicDescription": "This metric represents fraction of cycles CP= U was stalled due to Length Changing Prefixes (LCPs). Using proper compiler= flags or Intel Compiler by default will certainly avoid this. Related metr= ics: tma_dsb_switches, tma_fetch_bandwidth, tma_info_frontend_dsb_coverage,= tma_info_inst_mix_iptb", + "MetricThreshold": "tma_lcp > 0.05 & (tma_fetch_latency > 0.1 & tm= a_frontend_bound > 0.15)", + "PublicDescription": "This metric represents fraction of cycles CP= U was stalled due to Length Changing Prefixes (LCPs). Using proper compiler= flags or Intel Compiler by default will certainly avoid this. #Link: Optim= ization Guide about LCP BKMs. Related metrics: tma_dsb_switches, tma_fetch_= bandwidth, tma_info_frontend_dsb_coverage, tma_info_inst_mix_iptb", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of slots wher= e the CPU was retiring light-weight operations , instructions that require = no more than one uop (micro-operation)", + "BriefDescription": "This metric represents fraction of slots wher= e the CPU was retiring light-weight operations -- instructions that require= no more than one uop (micro-operation)", "MetricExpr": "tma_retiring - tma_heavy_operations", "MetricGroup": "Retire;TmaL2;TopdownL2;tma_L2_group;tma_retiring_g= roup", "MetricName": "tma_light_operations", "MetricThreshold": "tma_light_operations > 0.6", "MetricgroupNoGroup": "TopdownL2", - "PublicDescription": "This metric represents fraction of slots whe= re the CPU was retiring light-weight operations , instructions that require= no more than one uop (micro-operation). This correlates with total number = of instructions used by the program. A uops-per-instruction (see UopPI metr= ic) ratio of 1 or less should be expected for decently optimized code runni= ng on Intel Core/Xeon products. While this often indicates efficient X86 in= structions were executed; high value does not necessarily mean better perfo= rmance cannot be achieved. ([ICL+] Note this may undercount due to approxim= ation using indirect events; [ADL+] .). Sample with: INST_RETIRED.PREC_DIST= ", + "PublicDescription": "This metric represents fraction of slots whe= re the CPU was retiring light-weight operations -- instructions that requir= e no more than one uop (micro-operation). This correlates with total number= of instructions used by the program. A uops-per-instruction (see UopPI met= ric) ratio of 1 or less should be expected for decently optimized code runn= ing on Intel Core/Xeon products. While this often indicates efficient X86 i= nstructions were executed; high value does not necessarily mean better perf= ormance cannot be achieved. ([ICL+] Note this may undercount due to approxi= mation using indirect events; [ADL+] .). Sample with: INST_RETIRED.PREC_DIS= T", "ScaleUnit": "100%" }, { @@ -712,8 +710,8 @@ "MetricExpr": "MEM_UOPS_RETIRED.LOCK_LOADS / MEM_UOPS_RETIRED.ALL_= STORES * min(CPU_CLK_UNHALTED.THREAD, OFFCORE_REQUESTS_OUTSTANDING.CYCLES_W= ITH_DEMAND_RFO) / tma_info_thread_clks", "MetricGroup": "LockCont;Offcore;TopdownL4;tma_L4_group;tma_issueR= FO;tma_l1_bound_group", "MetricName": "tma_lock_latency", - "MetricThreshold": "tma_lock_latency > 0.2 & tma_l1_bound > 0.1 & = tma_memory_bound > 0.2 & tma_backend_bound > 0.2", - "PublicDescription": "This metric represents fraction of cycles th= e CPU spent handling cache misses due to lock operations. Due to the microa= rchitecture handling of locks; they are classified as L1_Bound regardless o= f what memory source satisfied them. Sample with: MEM_UOPS_RETIRED.LOCK_LOA= DS. Related metrics: tma_store_latency", + "MetricThreshold": "tma_lock_latency > 0.2 & (tma_l1_bound > 0.1 &= (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric represents fraction of cycles th= e CPU spent handling cache misses due to lock operations. Due to the microa= rchitecture handling of locks; they are classified as L1_Bound regardless o= f what memory source satisfied them. Sample with: MEM_UOPS_RETIRED.LOCK_LOA= DS_PS. Related metrics: tma_store_latency", "ScaleUnit": "100%" }, { @@ -724,15 +722,15 @@ "MetricName": "tma_machine_clears", "MetricThreshold": "tma_machine_clears > 0.1 & tma_bad_speculation= > 0.15", "MetricgroupNoGroup": "TopdownL2", - "PublicDescription": "This metric represents fraction of slots the= CPU has wasted due to Machine Clears. These slots are either wasted by uo= ps fetched prior to the clear; or stalls the out-of-order portion of the ma= chine needs to recover its state after the clear. For example; this can hap= pen due to memory ordering Nukes (e.g. Memory Disambiguation) or Self-Modif= ying-Code (SMC) nukes. Sample with: MACHINE_CLEARS.COUNT. Related metrics: = tma_contested_accesses, tma_data_sharing, tma_false_sharing, tma_l1_bound, = tma_microcode_sequencer, tma_ms_switches", + "PublicDescription": "This metric represents fraction of slots the= CPU has wasted due to Machine Clears. These slots are either wasted by uo= ps fetched prior to the clear; or stalls the out-of-order portion of the ma= chine needs to recover its state after the clear. For example; this can hap= pen due to memory ordering Nukes (e.g. Memory Disambiguation) or Self-Modif= ying-Code (SMC) nukes. Sample with: MACHINE_CLEARS.COUNT. Related metrics: = tma_clears_resteers, tma_contested_accesses, tma_data_sharing, tma_false_sh= aring, tma_l1_bound, tma_microcode_sequencer, tma_ms_switches, tma_remote_c= ache", "ScaleUnit": "100%" }, { "BriefDescription": "This metric estimates fraction of cycles wher= e the core's performance was likely hurt due to approaching bandwidth limit= s of external memory - DRAM ([SPR-HBM] and/or HBM)", - "MetricExpr": "min(CPU_CLK_UNHALTED.THREAD, cpu@OFFCORE_REQUESTS_O= UTSTANDING.ALL_DATA_RD\\,cmask\\=3D0x6@) / tma_info_thread_clks", + "MetricExpr": "min(CPU_CLK_UNHALTED.THREAD, cpu@OFFCORE_REQUESTS_O= UTSTANDING.ALL_DATA_RD\\,cmask\\=3D6@) / tma_info_thread_clks", "MetricGroup": "BvMB;MemoryBW;Offcore;TopdownL4;tma_L4_group;tma_d= ram_bound_group;tma_issueBW", "MetricName": "tma_mem_bandwidth", - "MetricThreshold": "tma_mem_bandwidth > 0.2 & tma_dram_bound > 0.1= & tma_memory_bound > 0.2 & tma_backend_bound > 0.2", + "MetricThreshold": "tma_mem_bandwidth > 0.2 & (tma_dram_bound > 0.= 1 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", "PublicDescription": "This metric estimates fraction of cycles whe= re the core's performance was likely hurt due to approaching bandwidth limi= ts of external memory - DRAM ([SPR-HBM] and/or HBM). The underlying heuris= tic assumes that a similar off-core traffic is generated by all IA cores. T= his metric does not aggregate non-data-read requests by this logical proces= sor; requests from other IA Logical Processors/Physical Cores/sockets; or o= ther non-IA devices like GPU; hence the maximum external memory bandwidth l= imits may or may not be approached when this metric is flagged (see Uncore = counters for that). Related metrics: tma_fb_full, tma_info_system_dram_bw_u= se, tma_sq_full", "ScaleUnit": "100%" }, @@ -741,19 +739,19 @@ "MetricExpr": "min(CPU_CLK_UNHALTED.THREAD, OFFCORE_REQUESTS_OUTST= ANDING.CYCLES_WITH_DATA_RD) / tma_info_thread_clks - tma_mem_bandwidth", "MetricGroup": "BvML;MemoryLat;Offcore;TopdownL4;tma_L4_group;tma_= dram_bound_group;tma_issueLat", "MetricName": "tma_mem_latency", - "MetricThreshold": "tma_mem_latency > 0.1 & tma_dram_bound > 0.1 &= tma_memory_bound > 0.2 & tma_backend_bound > 0.2", + "MetricThreshold": "tma_mem_latency > 0.1 & (tma_dram_bound > 0.1 = & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", "PublicDescription": "This metric estimates fraction of cycles whe= re the performance was likely hurt due to latency from external memory - DR= AM ([SPR-HBM] and/or HBM). This metric does not aggregate requests from ot= her Logical Processors/Physical Cores/sockets (see Uncore counters for that= ). Related metrics: tma_l3_hit_latency", "ScaleUnit": "100%" }, { "BriefDescription": "This metric represents fraction of slots the = Memory subsystem within the Backend was a bottleneck", "MetricConstraint": "NO_GROUP_EVENTS", - "MetricExpr": "(min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.STALLS= _LDM_PENDING) + RESOURCE_STALLS.SB) / (min(CPU_CLK_UNHALTED.THREAD, CYCLE_A= CTIVITY.CYCLES_NO_EXECUTE) + (cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x1@ - (cp= u@UOPS_EXECUTED.CORE\\,cmask\\=3D0x3@ if tma_info_thread_ipc > 1.8 else cpu= @UOPS_EXECUTED.CORE\\,cmask\\=3D0x2@)) / 2 - (RS_EVENTS.EMPTY_CYCLES if tma= _fetch_latency > 0.1 else 0) + RESOURCE_STALLS.SB if #SMT_on else min(CPU_C= LK_UNHALTED.THREAD, CYCLE_ACTIVITY.CYCLES_NO_EXECUTE) + cpu@UOPS_EXECUTED.C= ORE\\,cmask\\=3D0x1@ - (cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x3@ if tma_info= _thread_ipc > 1.8 else cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x2@) - (RS_EVENT= S.EMPTY_CYCLES if tma_fetch_latency > 0.1 else 0) + RESOURCE_STALLS.SB) * t= ma_backend_bound", + "MetricExpr": "((min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.STALL= S_LDM_PENDING) + RESOURCE_STALLS.SB) / (min(CPU_CLK_UNHALTED.THREAD, CYCLE_= ACTIVITY.CYCLES_NO_EXECUTE) + (cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D1@ - (cpu= @UOPS_EXECUTED.CORE\\,cmask\\=3D3@ if tma_info_thread_ipc > 1.8 else cpu@UO= PS_EXECUTED.CORE\\,cmask\\=3D2@)) / 2 - (RS_EVENTS.EMPTY_CYCLES if tma_fetc= h_latency > 0.1 else 0) + RESOURCE_STALLS.SB) if #SMT_on else min(CPU_CLK_U= NHALTED.THREAD, CYCLE_ACTIVITY.CYCLES_NO_EXECUTE) + cpu@UOPS_EXECUTED.CORE\= \,cmask\\=3D1@ - (cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D3@ if tma_info_thread_= ipc > 1.8 else cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D2@) - (RS_EVENTS.EMPTY_CY= CLES if tma_fetch_latency > 0.1 else 0) + RESOURCE_STALLS.SB) * tma_backend= _bound", "MetricGroup": "Backend;TmaL2;TopdownL2;tma_L2_group;tma_backend_b= ound_group", "MetricName": "tma_memory_bound", "MetricThreshold": "tma_memory_bound > 0.2 & tma_backend_bound > 0= .2", "MetricgroupNoGroup": "TopdownL2", - "PublicDescription": "This metric represents fraction of slots the= Memory subsystem within the Backend was a bottleneck. Memory Bound estima= tes fraction of slots where pipeline is likely stalled due to demand load o= r store instructions. This accounts mainly for (1) non-completed in-flight = memory demand loads which coincides with execution units starvation; in add= ition to (2) cases where stores could impose backpressure on the pipeline w= hen many of them get buffered at the same time (less common out of the two)= ", + "PublicDescription": "This metric represents fraction of slots the= Memory subsystem within the Backend was a bottleneck. Memory Bound estima= tes fraction of slots where pipeline is likely stalled due to demand load o= r store instructions. This accounts mainly for (1) non-completed in-flight = memory demand loads which coincides with execution units starvation; in add= ition to (2) cases where stores could impose backpressure on the pipeline w= hen many of them get buffered at the same time (less common out of the two)= .", "ScaleUnit": "100%" }, { @@ -762,7 +760,7 @@ "MetricGroup": "MicroSeq;TopdownL3;tma_L3_group;tma_heavy_operatio= ns_group;tma_issueMC;tma_issueMS", "MetricName": "tma_microcode_sequencer", "MetricThreshold": "tma_microcode_sequencer > 0.05 & tma_heavy_ope= rations > 0.1", - "PublicDescription": "This metric represents fraction of slots the= CPU was retiring uops fetched by the Microcode Sequencer (MS) unit. The M= S is used for CISC instructions not supported by the default decoders (like= repeat move strings; or CPUID); or by microcode assists used to address so= me operation modes (like in Floating Point assists). These cases can often = be avoided. Sample with: IDQ.MS_UOPS. Related metrics: tma_l1_bound, tma_ma= chine_clears, tma_ms_switches", + "PublicDescription": "This metric represents fraction of slots the= CPU was retiring uops fetched by the Microcode Sequencer (MS) unit. The M= S is used for CISC instructions not supported by the default decoders (like= repeat move strings; or CPUID); or by microcode assists used to address so= me operation modes (like in Floating Point assists). These cases can often = be avoided. Sample with: IDQ.MS_UOPS. Related metrics: tma_clears_resteers,= tma_l1_bound, tma_machine_clears, tma_ms_switches", "ScaleUnit": "100%" }, { @@ -771,7 +769,7 @@ "MetricGroup": "DSBmiss;FetchBW;TopdownL3;tma_L3_group;tma_fetch_b= andwidth_group", "MetricName": "tma_mite", "MetricThreshold": "tma_mite > 0.1 & tma_fetch_bandwidth > 0.2", - "PublicDescription": "This metric represents Core fraction of cycl= es in which CPU was likely limited due to the MITE pipeline (the legacy dec= ode pipeline). This pipeline is used for code that was not pre-cached in th= e DSB or LSD. For example; inefficiencies due to asymmetric decoders; use o= f long immediate or LCP can manifest as MITE fetch bandwidth bottleneck", + "PublicDescription": "This metric represents Core fraction of cycl= es in which CPU was likely limited due to the MITE pipeline (the legacy dec= ode pipeline). This pipeline is used for code that was not pre-cached in th= e DSB or LSD. For example; inefficiencies due to asymmetric decoders; use o= f long immediate or LCP can manifest as MITE fetch bandwidth bottleneck.", "ScaleUnit": "100%" }, { @@ -779,8 +777,8 @@ "MetricExpr": "2 * IDQ.MS_SWITCHES / tma_info_thread_clks", "MetricGroup": "FetchLat;MicroSeq;TopdownL3;tma_L3_group;tma_fetch= _latency_group;tma_issueMC;tma_issueMS;tma_issueMV;tma_issueSO", "MetricName": "tma_ms_switches", - "MetricThreshold": "tma_ms_switches > 0.05 & tma_fetch_latency > 0= .1 & tma_frontend_bound > 0.15", - "PublicDescription": "This metric estimates the fraction of cycles= when the CPU was stalled due to switches of uop delivery to the Microcode = Sequencer (MS). Commonly used instructions are optimized for delivery by th= e DSB (decoded i-cache) or MITE (legacy instruction decode) pipelines. Cert= ain operations cannot be handled natively by the execution pipeline; and mu= st be performed by microcode (small programs injected into the execution st= ream). Switching to the MS too often can negatively impact performance. The= MS is designated to deliver long uop flows required by CISC instructions l= ike CPUID; or uncommon conditions like Floating Point Assists when dealing = with Denormals. Sample with: IDQ.MS_SWITCHES. Related metrics: tma_l1_bound= , tma_machine_clears, tma_microcode_sequencer", + "MetricThreshold": "tma_ms_switches > 0.05 & (tma_fetch_latency > = 0.1 & tma_frontend_bound > 0.15)", + "PublicDescription": "This metric estimates the fraction of cycles= when the CPU was stalled due to switches of uop delivery to the Microcode = Sequencer (MS). Commonly used instructions are optimized for delivery by th= e DSB (decoded i-cache) or MITE (legacy instruction decode) pipelines. Cert= ain operations cannot be handled natively by the execution pipeline; and mu= st be performed by microcode (small programs injected into the execution st= ream). Switching to the MS too often can negatively impact performance. The= MS is designated to deliver long uop flows required by CISC instructions l= ike CPUID; or uncommon conditions like Floating Point Assists when dealing = with Denormals. Sample with: IDQ.MS_SWITCHES. Related metrics: tma_clears_r= esteers, tma_l1_bound, tma_machine_clears, tma_microcode_sequencer, tma_mix= ing_vectors, tma_serializing_operation", "ScaleUnit": "100%" }, { @@ -789,7 +787,7 @@ "MetricGroup": "Compute;TopdownL6;tma_L6_group;tma_alu_op_utilizat= ion_group;tma_issue2P", "MetricName": "tma_port_0", "MetricThreshold": "tma_port_0 > 0.6", - "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 0 ([SNB+] ALU; [HSW+] ALU and 2nd = branch). Sample with: UOPS_DISPATCHED_PORT.PORT_0. Related metrics: tma_por= t_1, tma_port_5, tma_port_6, tma_ports_utilized_2", + "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 0 ([SNB+] ALU; [HSW+] ALU and 2nd = branch). Sample with: UOPS_DISPATCHED.PORT_0. Related metrics: tma_fp_scala= r, tma_fp_vector, tma_fp_vector_128b, tma_fp_vector_256b, tma_fp_vector_512= b, tma_port_1, tma_port_5, tma_port_6, tma_ports_utilized_2", "ScaleUnit": "100%" }, { @@ -798,7 +796,7 @@ "MetricGroup": "TopdownL6;tma_L6_group;tma_alu_op_utilization_grou= p;tma_issue2P", "MetricName": "tma_port_1", "MetricThreshold": "tma_port_1 > 0.6", - "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 1 (ALU). Sample with: UOPS_DISPATC= HED_PORT.PORT_1. Related metrics: tma_port_0, tma_port_5, tma_port_6, tma_p= orts_utilized_2", + "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 1 (ALU). Sample with: UOPS_DISPATC= HED.PORT_1. Related metrics: tma_fp_scalar, tma_fp_vector, tma_fp_vector_12= 8b, tma_fp_vector_256b, tma_fp_vector_512b, tma_port_0, tma_port_5, tma_por= t_6, tma_ports_utilized_2", "ScaleUnit": "100%" }, { @@ -834,7 +832,7 @@ "MetricGroup": "TopdownL6;tma_L6_group;tma_alu_op_utilization_grou= p;tma_issue2P", "MetricName": "tma_port_5", "MetricThreshold": "tma_port_5 > 0.6", - "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 5 ([SNB+] Branches and ALU; [HSW+]= ALU). Sample with: UOPS_DISPATCHED_PORT.PORT_5. Related metrics: tma_port_= 0, tma_port_1, tma_port_6, tma_ports_utilized_2", + "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 5 ([SNB+] Branches and ALU; [HSW+]= ALU). Sample with: UOPS_DISPATCHED.PORT_5. Related metrics: tma_fp_scalar,= tma_fp_vector, tma_fp_vector_128b, tma_fp_vector_256b, tma_fp_vector_512b,= tma_port_0, tma_port_1, tma_port_6, tma_ports_utilized_2", "ScaleUnit": "100%" }, { @@ -843,7 +841,7 @@ "MetricGroup": "TopdownL6;tma_L6_group;tma_alu_op_utilization_grou= p;tma_issue2P", "MetricName": "tma_port_6", "MetricThreshold": "tma_port_6 > 0.6", - "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 6 ([HSW+] Primary Branch and simpl= e ALU). Sample with: UOPS_DISPATCHED_PORT.PORT_1. Related metrics: tma_port= _0, tma_port_1, tma_port_5, tma_ports_utilized_2", + "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 6 ([HSW+] Primary Branch and simpl= e ALU). Sample with: UOPS_DISPATCHED.PORT_1. Related metrics: tma_fp_scalar= , tma_fp_vector, tma_fp_vector_128b, tma_fp_vector_256b, tma_fp_vector_512b= , tma_port_0, tma_port_1, tma_port_5, tma_ports_utilized_2", "ScaleUnit": "100%" }, { @@ -858,46 +856,46 @@ { "BriefDescription": "This metric estimates fraction of cycles the = CPU performance was potentially limited due to Core computation issues (non= divider-related)", "MetricConstraint": "NO_GROUP_EVENTS", - "MetricExpr": "((min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.CYCLE= S_NO_EXECUTE) + (cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x1@ - (cpu@UOPS_EXECUT= ED.CORE\\,cmask\\=3D0x3@ if tma_info_thread_ipc > 1.8 else cpu@UOPS_EXECUTE= D.CORE\\,cmask\\=3D0x2@)) / 2 - (RS_EVENTS.EMPTY_CYCLES if tma_fetch_latenc= y > 0.1 else 0) + RESOURCE_STALLS.SB if #SMT_on else min(CPU_CLK_UNHALTED.T= HREAD, CYCLE_ACTIVITY.CYCLES_NO_EXECUTE) + cpu@UOPS_EXECUTED.CORE\\,cmask\\= =3D0x1@ - (cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x3@ if tma_info_thread_ipc >= 1.8 else cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x2@) - (RS_EVENTS.EMPTY_CYCLE= S if tma_fetch_latency > 0.1 else 0) + RESOURCE_STALLS.SB) - RESOURCE_STALL= S.SB - min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.STALLS_LDM_PENDING)) / t= ma_info_thread_clks", + "MetricExpr": "(min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.CYCLES= _NO_EXECUTE) + (cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D1@ - (cpu@UOPS_EXECUTED.= CORE\\,cmask\\=3D3@ if tma_info_thread_ipc > 1.8 else cpu@UOPS_EXECUTED.COR= E\\,cmask\\=3D2@)) / 2 - (RS_EVENTS.EMPTY_CYCLES if tma_fetch_latency > 0.1= else 0) + RESOURCE_STALLS.SB if #SMT_on else min(CPU_CLK_UNHALTED.THREAD, = CYCLE_ACTIVITY.CYCLES_NO_EXECUTE) + cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D1@ -= (cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D3@ if tma_info_thread_ipc > 1.8 else c= pu@UOPS_EXECUTED.CORE\\,cmask\\=3D2@) - (RS_EVENTS.EMPTY_CYCLES if tma_fetc= h_latency > 0.1 else 0) + RESOURCE_STALLS.SB - RESOURCE_STALLS.SB - min(CPU= _CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.STALLS_LDM_PENDING)) / tma_info_thread= _clks", "MetricGroup": "PortsUtil;TopdownL3;tma_L3_group;tma_core_bound_gr= oup", "MetricName": "tma_ports_utilization", - "MetricThreshold": "tma_ports_utilization > 0.15 & tma_core_bound = > 0.1 & tma_backend_bound > 0.2", - "PublicDescription": "This metric estimates fraction of cycles the= CPU performance was potentially limited due to Core computation issues (no= n divider-related). Two distinct categories can be attributed into this me= tric: (1) heavy data-dependency among contiguous instructions would manifes= t in this metric - such cases are often referred to as low Instruction Leve= l Parallelism (ILP). (2) Contention on some hardware execution unit other t= han Divider. For example; when there are too many multiply operations", + "MetricThreshold": "tma_ports_utilization > 0.15 & (tma_core_bound= > 0.1 & tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates fraction of cycles the= CPU performance was potentially limited due to Core computation issues (no= n divider-related). Two distinct categories can be attributed into this me= tric: (1) heavy data-dependency among contiguous instructions would manifes= t in this metric - such cases are often referred to as low Instruction Leve= l Parallelism (ILP). (2) Contention on some hardware execution unit other t= han Divider. For example; when there are too many multiply operations.", "ScaleUnit": "100%" }, { "BriefDescription": "This metric represents fraction of cycles CPU= executed no uops on any execution port (Logical Processor cycles since ICL= , Physical Core cycles otherwise)", - "MetricExpr": "(cpu@UOPS_EXECUTED.CORE\\,inv\\=3D0x1\\,cmask\\=3D0= x1@ / 2 if #SMT_on else min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.CYCLES_= NO_EXECUTE) - (RS_EVENTS.EMPTY_CYCLES if tma_fetch_latency > 0.1 else 0)) /= tma_info_core_core_clks", + "MetricExpr": "(cpu@UOPS_EXECUTED.CORE\\,inv\\,cmask\\=3D1@ / 2 if= #SMT_on else (min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.CYCLES_NO_EXECUT= E) - (RS_EVENTS.EMPTY_CYCLES if tma_fetch_latency > 0.1 else 0)) / tma_info= _core_core_clks)", "MetricGroup": "PortsUtil;TopdownL4;tma_L4_group;tma_ports_utiliza= tion_group", "MetricName": "tma_ports_utilized_0", - "MetricThreshold": "tma_ports_utilized_0 > 0.2 & tma_ports_utiliza= tion > 0.15 & tma_core_bound > 0.1 & tma_backend_bound > 0.2", - "PublicDescription": "This metric represents fraction of cycles CP= U executed no uops on any execution port (Logical Processor cycles since IC= L, Physical Core cycles otherwise). Long-latency instructions like divides = may contribute to this metric", + "MetricThreshold": "tma_ports_utilized_0 > 0.2 & (tma_ports_utiliz= ation > 0.15 & (tma_core_bound > 0.1 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric represents fraction of cycles CP= U executed no uops on any execution port (Logical Processor cycles since IC= L, Physical Core cycles otherwise). Long-latency instructions like divides = may contribute to this metric.", "ScaleUnit": "100%" }, { "BriefDescription": "This metric represents fraction of cycles whe= re the CPU executed total of 1 uop per cycle on all execution ports (Logica= l Processor cycles since ICL, Physical Core cycles otherwise)", - "MetricExpr": "((cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x1@ - cpu@UOP= S_EXECUTED.CORE\\,cmask\\=3D0x2@) / 2 if #SMT_on else cpu@UOPS_EXECUTED.COR= E\\,cmask\\=3D0x1@ - cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x2@) / tma_info_co= re_core_clks", + "MetricExpr": "((cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D1@ - cpu@UOPS_= EXECUTED.CORE\\,cmask\\=3D2@) / 2 if #SMT_on else (cpu@UOPS_EXECUTED.CORE\\= ,cmask\\=3D1@ - cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D2@) / tma_info_core_core= _clks)", "MetricGroup": "PortsUtil;TopdownL4;tma_L4_group;tma_issueL1;tma_p= orts_utilization_group", "MetricName": "tma_ports_utilized_1", - "MetricThreshold": "tma_ports_utilized_1 > 0.2 & tma_ports_utiliza= tion > 0.15 & tma_core_bound > 0.1 & tma_backend_bound > 0.2", + "MetricThreshold": "tma_ports_utilized_1 > 0.2 & (tma_ports_utiliz= ation > 0.15 & (tma_core_bound > 0.1 & tma_backend_bound > 0.2))", "PublicDescription": "This metric represents fraction of cycles wh= ere the CPU executed total of 1 uop per cycle on all execution ports (Logic= al Processor cycles since ICL, Physical Core cycles otherwise). This can be= due to heavy data-dependency among software instructions; or over oversubs= cribing a particular hardware resource. In some other cases with high 1_Por= t_Utilized and L1_Bound; this metric can point to L1 data-cache latency bot= tleneck that may not necessarily manifest with complete execution starvatio= n (due to the short L1 latency e.g. walking a linked list) - looking at the= assembly can be helpful. Related metrics: tma_l1_bound", "ScaleUnit": "100%" }, { "BriefDescription": "This metric represents fraction of cycles CPU= executed total of 2 uops per cycle on all execution ports (Logical Process= or cycles since ICL, Physical Core cycles otherwise)", - "MetricExpr": "((cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x2@ - cpu@UOP= S_EXECUTED.CORE\\,cmask\\=3D0x3@) / 2 if #SMT_on else cpu@UOPS_EXECUTED.COR= E\\,cmask\\=3D0x2@ - cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x3@) / tma_info_co= re_core_clks", + "MetricExpr": "((cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D2@ - cpu@UOPS_= EXECUTED.CORE\\,cmask\\=3D3@) / 2 if #SMT_on else (cpu@UOPS_EXECUTED.CORE\\= ,cmask\\=3D2@ - cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D3@) / tma_info_core_core= _clks)", "MetricGroup": "PortsUtil;TopdownL4;tma_L4_group;tma_issue2P;tma_p= orts_utilization_group", "MetricName": "tma_ports_utilized_2", - "MetricThreshold": "tma_ports_utilized_2 > 0.15 & tma_ports_utiliz= ation > 0.15 & tma_core_bound > 0.1 & tma_backend_bound > 0.2", - "PublicDescription": "This metric represents fraction of cycles CP= U executed total of 2 uops per cycle on all execution ports (Logical Proces= sor cycles since ICL, Physical Core cycles otherwise). Loop Vectorization = -most compilers feature auto-Vectorization options today- reduces pressure = on the execution ports as multiple elements are calculated with same uop. R= elated metrics: tma_port_0, tma_port_1, tma_port_5, tma_port_6", + "MetricThreshold": "tma_ports_utilized_2 > 0.15 & (tma_ports_utili= zation > 0.15 & (tma_core_bound > 0.1 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric represents fraction of cycles CP= U executed total of 2 uops per cycle on all execution ports (Logical Proces= sor cycles since ICL, Physical Core cycles otherwise). Loop Vectorization = -most compilers feature auto-Vectorization options today- reduces pressure = on the execution ports as multiple elements are calculated with same uop. R= elated metrics: tma_fp_scalar, tma_fp_vector, tma_fp_vector_128b, tma_fp_ve= ctor_256b, tma_fp_vector_512b, tma_port_0, tma_port_1, tma_port_5, tma_port= _6", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of cycles CPU= executed total of 3 or more uops per cycle on all execution ports (Logical= Processor cycles since ICL, Physical Core cycles otherwise)", - "MetricExpr": "(cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x3@ / 2 if #SM= T_on else cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D0x3@) / tma_info_core_core_clk= s", + "BriefDescription": "This metric represents fraction of cycles CPU= executed total of 3 or more uops per cycle on all execution ports (Logical= Processor cycles since ICL, Physical Core cycles otherwise).", + "MetricExpr": "(cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D3@ / 2 if #SMT_= on else cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D3@) / tma_info_core_core_clks", "MetricGroup": "BvCB;PortsUtil;TopdownL4;tma_L4_group;tma_ports_ut= ilization_group", "MetricName": "tma_ports_utilized_3m", - "MetricThreshold": "tma_ports_utilized_3m > 0.4 & tma_ports_utiliz= ation > 0.15 & tma_core_bound > 0.1 & tma_backend_bound > 0.2", + "MetricThreshold": "tma_ports_utilized_3m > 0.4 & (tma_ports_utili= zation > 0.15 & (tma_core_bound > 0.1 & tma_backend_bound > 0.2))", "ScaleUnit": "100%" }, { @@ -917,7 +915,7 @@ "MetricGroup": "TopdownL4;tma_L4_group;tma_l1_bound_group", "MetricName": "tma_split_loads", "MetricThreshold": "tma_split_loads > 0.3", - "PublicDescription": "This metric estimates fraction of cycles han= dling memory load split accesses - load that cross 64-byte cache line bound= ary. Sample with: MEM_UOPS_RETIRED.SPLIT_LOADS", + "PublicDescription": "This metric estimates fraction of cycles han= dling memory load split accesses - load that cross 64-byte cache line bound= ary. Sample with: MEM_UOPS_RETIRED.SPLIT_LOADS_PS", "ScaleUnit": "100%" }, { @@ -925,8 +923,8 @@ "MetricExpr": "2 * MEM_UOPS_RETIRED.SPLIT_STORES / tma_info_core_c= ore_clks", "MetricGroup": "TopdownL4;tma_L4_group;tma_issueSpSt;tma_store_bou= nd_group", "MetricName": "tma_split_stores", - "MetricThreshold": "tma_split_stores > 0.2 & tma_store_bound > 0.2= & tma_memory_bound > 0.2 & tma_backend_bound > 0.2", - "PublicDescription": "This metric represents rate of split store a= ccesses. Consider aligning your data to the 64-byte cache line granularity= . Sample with: MEM_UOPS_RETIRED.SPLIT_STORES. Related metrics: tma_port_4", + "MetricThreshold": "tma_split_stores > 0.2 & (tma_store_bound > 0.= 2 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric represents rate of split store a= ccesses. Consider aligning your data to the 64-byte cache line granularity= . Sample with: MEM_UOPS_RETIRED.SPLIT_STORES_PS. Related metrics: tma_port_= 4", "ScaleUnit": "100%" }, { @@ -934,7 +932,7 @@ "MetricExpr": "(OFFCORE_REQUESTS_BUFFER.SQ_FULL / 2 if #SMT_on els= e OFFCORE_REQUESTS_BUFFER.SQ_FULL) / tma_info_core_core_clks", "MetricGroup": "BvMB;MemoryBW;Offcore;TopdownL4;tma_L4_group;tma_i= ssueBW;tma_l3_bound_group", "MetricName": "tma_sq_full", - "MetricThreshold": "tma_sq_full > 0.3 & tma_l3_bound > 0.05 & tma_= memory_bound > 0.2 & tma_backend_bound > 0.2", + "MetricThreshold": "tma_sq_full > 0.3 & (tma_l3_bound > 0.05 & (tm= a_memory_bound > 0.2 & tma_backend_bound > 0.2))", "PublicDescription": "This metric measures fraction of cycles wher= e the Super Queue (SQ) was full taking into account all request-types and b= oth hardware SMT threads (Logical Processors). Related metrics: tma_fb_full= , tma_info_system_dram_bw_use, tma_mem_bandwidth", "ScaleUnit": "100%" }, @@ -943,8 +941,8 @@ "MetricExpr": "RESOURCE_STALLS.SB / tma_info_thread_clks", "MetricGroup": "MemoryBound;TmaL3mem;TopdownL3;tma_L3_group;tma_me= mory_bound_group", "MetricName": "tma_store_bound", - "MetricThreshold": "tma_store_bound > 0.2 & tma_memory_bound > 0.2= & tma_backend_bound > 0.2", - "PublicDescription": "This metric estimates how often CPU was stal= led due to RFO store memory accesses; RFO store issue a read-for-ownership= request before the write. Even though store accesses do not typically stal= l out-of-order CPUs; there are few cases where stores can lead to actual st= alls. This metric will be flagged should RFO stores be a bottleneck. Sample= with: MEM_UOPS_RETIRED.ALL_STORES", + "MetricThreshold": "tma_store_bound > 0.2 & (tma_memory_bound > 0.= 2 & tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates how often CPU was stal= led due to RFO store memory accesses; RFO store issue a read-for-ownership= request before the write. Even though store accesses do not typically stal= l out-of-order CPUs; there are few cases where stores can lead to actual st= alls. This metric will be flagged should RFO stores be a bottleneck. Sample= with: MEM_UOPS_RETIRED.ALL_STORES_PS", "ScaleUnit": "100%" }, { @@ -952,8 +950,8 @@ "MetricExpr": "13 * LD_BLOCKS.STORE_FORWARD / tma_info_thread_clks= ", "MetricGroup": "TopdownL4;tma_L4_group;tma_l1_bound_group", "MetricName": "tma_store_fwd_blk", - "MetricThreshold": "tma_store_fwd_blk > 0.1 & tma_l1_bound > 0.1 &= tma_memory_bound > 0.2 & tma_backend_bound > 0.2", - "PublicDescription": "This metric roughly estimates fraction of cy= cles when the memory subsystem had loads blocked since they could not forwa= rd data from earlier (in program order) overlapping stores. To streamline m= emory operations in the pipeline; a load can avoid waiting for memory if a = prior in-flight store is writing the data that the load wants to read (stor= e forwarding process). However; in some cases the load may be blocked for a= significant time pending the store forward. For example; when the prior st= ore is writing a smaller region than the load is reading", + "MetricThreshold": "tma_store_fwd_blk > 0.1 & (tma_l1_bound > 0.1 = & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric roughly estimates fraction of cy= cles when the memory subsystem had loads blocked since they could not forwa= rd data from earlier (in program order) overlapping stores. To streamline m= emory operations in the pipeline; a load can avoid waiting for memory if a = prior in-flight store is writing the data that the load wants to read (stor= e forwarding process). However; in some cases the load may be blocked for a= significant time pending the store forward. For example; when the prior st= ore is writing a smaller region than the load is reading.", "ScaleUnit": "100%" }, { @@ -962,8 +960,8 @@ "MetricExpr": "(L2_RQSTS.RFO_HIT * 9 * (1 - MEM_UOPS_RETIRED.LOCK_= LOADS / MEM_UOPS_RETIRED.ALL_STORES) + (1 - MEM_UOPS_RETIRED.LOCK_LOADS / M= EM_UOPS_RETIRED.ALL_STORES) * min(CPU_CLK_UNHALTED.THREAD, OFFCORE_REQUESTS= _OUTSTANDING.CYCLES_WITH_DEMAND_RFO)) / tma_info_thread_clks", "MetricGroup": "BvML;LockCont;MemoryLat;Offcore;TopdownL4;tma_L4_g= roup;tma_issueRFO;tma_issueSL;tma_store_bound_group", "MetricName": "tma_store_latency", - "MetricThreshold": "tma_store_latency > 0.1 & tma_store_bound > 0.= 2 & tma_memory_bound > 0.2 & tma_backend_bound > 0.2", - "PublicDescription": "This metric estimates fraction of cycles the= CPU spent handling L1D store misses. Store accesses usually less impact ou= t-of-order core performance; however; holding resources for longer time can= lead into undesired implications (e.g. contention on L1D fill-buffer entri= es - see FB_Full). Related metrics: tma_branch_resteers, tma_fb_full, tma_l= 3_hit_latency, tma_lock_latency", + "MetricThreshold": "tma_store_latency > 0.1 & (tma_store_bound > 0= .2 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates fraction of cycles the= CPU spent handling L1D store misses. Store accesses usually less impact ou= t-of-order core performance; however; holding resources for longer time can= lead into undesired implications (e.g. contention on L1D fill-buffer entri= es - see FB_Full). Related metrics: tma_fb_full, tma_lock_latency", "ScaleUnit": "100%" }, { --=20 2.49.0.472.ge94155a9ec-goog