From: Jing Zhang <renyu.zj@linux.alibaba.com>
To: John Garry <john.g.garry@oracle.com>, Ian Rogers <irogers@google.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>,
Will Deacon <will@kernel.org>, James Clark <james.clark@arm.com>,
Mike Leach <mike.leach@linaro.org>, Leo Yan <leo.yan@linaro.org>,
linux-arm-kernel@lists.infradead.org,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
Andrew Kilroy <andrew.kilroy@arm.com>,
Shuai Xue <xueshuai@linux.alibaba.com>,
Zhuo Song <zhuo.song@linux.alibaba.com>,
Jing Zhang <renyu.zj@linux.alibaba.com>
Subject: [PATCH v8 8/9] perf vendor events arm64: Add PE utilization metrics for neoverse-n2-v2
Date: Tue, 17 Jan 2023 15:29:32 +0800 [thread overview]
Message-ID: <1673940573-90503-9-git-send-email-renyu.zj@linux.alibaba.com> (raw)
In-Reply-To: <1673940573-90503-1-git-send-email-renyu.zj@linux.alibaba.com>
Add PE utilization related metrics. In cpu_utilization metric, if it is
neoverse-n2 which slots are 5, the real stall_slot need to subtract the
cpu_cycles according to the neoverse-n2 errata [0].
[0] https://documentation-service.arm.com/static/636a66a64e6cf12278ad89cb?token=
Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Acked-by: Ian Rogers <irogers@google.com>
---
.../arch/arm64/arm/neoverse-n2-v2/metrics.json | 46 ++++++++++++++++++++++
1 file changed, 46 insertions(+)
diff --git a/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2-v2/metrics.json b/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2-v2/metrics.json
index afcdb17..3d6ac0c 100644
--- a/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2-v2/metrics.json
+++ b/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2-v2/metrics.json
@@ -160,5 +160,51 @@
"MetricGroup": "Branch",
"MetricName": "branch_miss_pred_rate",
"ScaleUnit": "100%"
+ },
+ {
+ "MetricExpr": "instructions / CPU_CYCLES",
+ "BriefDescription": "The average number of instructions executed for each cycle.",
+ "MetricGroup": "PEutilization",
+ "MetricName": "ipc"
+ },
+ {
+ "MetricExpr": "ipc / 5",
+ "BriefDescription": "IPC percentage of peak. The peak of IPC is 5.",
+ "MetricGroup": "PEutilization",
+ "MetricName": "ipc_rate",
+ "ScaleUnit": "100%"
+ },
+ {
+ "MetricExpr": "INST_RETIRED / CPU_CYCLES",
+ "BriefDescription": "Architecturally executed Instructions Per Cycle (IPC)",
+ "MetricGroup": "PEutilization",
+ "MetricName": "retired_ipc"
+ },
+ {
+ "MetricExpr": "INST_SPEC / CPU_CYCLES",
+ "BriefDescription": "Speculatively executed Instructions Per Cycle (IPC)",
+ "MetricGroup": "PEutilization",
+ "MetricName": "spec_ipc"
+ },
+ {
+ "MetricExpr": "OP_RETIRED / OP_SPEC",
+ "BriefDescription": "Of all the micro-operations issued, what percentage are retired(committed)",
+ "MetricGroup": "PEutilization",
+ "MetricName": "retired_rate",
+ "ScaleUnit": "100%"
+ },
+ {
+ "MetricExpr": "1 - OP_RETIRED / OP_SPEC",
+ "BriefDescription": "Of all the micro-operations issued, what percentage are not retired(committed)",
+ "MetricGroup": "PEutilization",
+ "MetricName": "wasted_rate",
+ "ScaleUnit": "100%"
+ },
+ {
+ "MetricExpr": "OP_RETIRED / OP_SPEC * (1 - (STALL_SLOT if (#slots - 5) else (STALL_SLOT - CPU_CYCLES)) / (#slots * CPU_CYCLES))",
+ "BriefDescription": "The truly effective ratio of micro-operations executed by the CPU, which means that misprediction and stall are not included",
+ "MetricGroup": "PEutilization",
+ "MetricName": "cpu_utilization",
+ "ScaleUnit": "100%"
}
]
--
1.8.3.1
next prev parent reply other threads:[~2023-01-17 7:30 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-17 7:29 [PATCH v8 0/9] Add metrics for neoverse-n2-v2 Jing Zhang
2023-01-17 7:29 ` [PATCH v8 1/9] perf pmu: Add #slots literal support for arm64 Jing Zhang
2023-01-17 8:45 ` John Garry
2023-01-19 3:49 ` Jing Zhang
2023-01-19 3:53 ` Jing Zhang
2023-01-24 17:47 ` Ian Rogers
2023-01-17 7:29 ` [PATCH v8 2/9] perf jevent: Add general metrics support Jing Zhang
2023-01-17 7:29 ` [PATCH v8 3/9] perf vendor events arm64: Add common topdown L1 metrics Jing Zhang
2023-01-17 7:29 ` [PATCH v8 4/9] perf vendor events arm64: Add topdown L1 metrics for neoverse-n2-v2 Jing Zhang
2023-01-17 7:29 ` [PATCH v8 5/9] perf vendor events arm64: Add TLB " Jing Zhang
2023-01-17 7:29 ` [PATCH v8 6/9] perf vendor events arm64: Add cache " Jing Zhang
2023-01-17 7:29 ` [PATCH v8 7/9] perf vendor events arm64: Add branch " Jing Zhang
2023-01-17 7:29 ` Jing Zhang [this message]
2023-01-17 7:29 ` [PATCH v8 9/9] perf vendor events arm64: Add instruction mix " Jing Zhang
2023-01-19 12:41 ` [PATCH v8 0/9] Add " Arnaldo Carvalho de Melo
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