[PATCH v3 5/6] perf vendor events arm64: Add PE utilization metrics for neoverse-n2
From: Jing Zhang <renyu.zj@linux.alibaba.com>
Date: 2022-11-24 17:15:21
Also in:
linux-perf-users, lkml
Subsystem:
performance events subsystem, performance events tooling arm64, the rest · Maintainers:
Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
Add PE utilization related metrics. Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com> --- .../arch/arm64/arm/neoverse-n2/metrics.json | 45 ++++++++++++++++++++++ 1 file changed, 45 insertions(+)
diff --git a/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json b/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json
index 23c7d62..7b54819 100644
--- a/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json
+++ b/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json@@ -189,5 +189,50 @@ "MetricGroup": "Branch", "MetricName": "branch_miss_pred_rate", "ScaleUnit": "100%" + }, + { + "MetricExpr": "instructions / CPU_CYCLES", + "PublicDescription": "The average number of instructions executed for each cycle.", + "BriefDescription": "Instructions per cycle", + "MetricGroup": "PEutilization", + "MetricName": "ipc" + }, + { + "MetricExpr": "INST_RETIRED / CPU_CYCLES", + "PublicDescription": "Architecturally executed Instructions Per Cycle (IPC)", + "BriefDescription": "Architecturally executed Instructions Per Cycle (IPC)", + "MetricGroup": "PEutilization", + "MetricName": "retired_ipc" + }, + { + "MetricExpr": "INST_SPEC / CPU_CYCLES", + "PublicDescription": "Speculatively executed Instructions Per Cycle (IPC)", + "BriefDescription": "Speculatively executed Instructions Per Cycle (IPC)", + "MetricGroup": "PEutilization", + "MetricName": "spec_ipc" + }, + { + "MetricExpr": "OP_RETIRED / OP_SPEC", + "PublicDescription": "Fraction of operations retired", + "BriefDescription": "Fraction of operations retired", + "MetricGroup": "PEutilization", + "MetricName": "retired_rate", + "ScaleUnit": "100%" + }, + { + "MetricExpr": "1 - OP_RETIRED / OP_SPEC", + "PublicDescription": "Fraction of operations wasted", + "BriefDescription": "Fraction of operations wasted", + "MetricGroup": "PEutilization", + "MetricName": "wasted_rate", + "ScaleUnit": "100%" + }, + { + "MetricExpr": "OP_RETIRED / OP_SPEC * (1 - (STALL_SLOT - CPU_CYCLES) / (CPU_CYCLES * 5))", + "PublicDescription": "Utilization of CPU", + "BriefDescription": "Utilization of CPU", + "MetricGroup": "PEutilization", + "MetricName": "cpu_utilization", + "ScaleUnit": "100%" } ]
--
1.8.3.1
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