Messages in this thread Patch in this message | | | From | Jing Zhang <> | Subject | [PATCH RFC 1/6] perf vendor events arm64: Add topdown L1 metrics for neoverse-n2 | Date | Mon, 31 Oct 2022 19:11:29 +0800 |
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The calculation formula of topdown L1 is from the document: https://documentation-service.arm.com/static/60250c7395978b529036da86?token=
Since neoverse-n2 does not yet support topdown L2, metricgroups such as Cache, TLB, Branch, InstructionsMix, and PEutilization will be added to further analysis of performance bottlenecks in the following patches.
Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com> --- .../arch/arm64/arm/neoverse-n2/metrics.json | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json
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 new file mode 100644 index 0000000..b6b3b19 --- /dev/null +++ b/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json @@ -0,0 +1,30 @@ +[ + { + "MetricExpr": "stall_slot_frontend / (5 * cpu_cycles)", + "PublicDescription": "Frontend bound L1 topdown metric", + "BriefDescription": "Frontend bound L1 topdown metric", + "MetricGroup": "TopDownL1", + "MetricName": "frontend_bound" + }, + { + "MetricExpr": "(1 - op_retired / op_spec) * (1 - stall_slot / (5 * cpu_cycles))", + "PublicDescription": "Wasted L1 topdown metric", + "BriefDescription": "Wasted L1 topdown metric", + "MetricGroup": "TopDownL1", + "MetricName": "wasted" + }, + { + "MetricExpr": "(op_retired / op_spec) * (1 - stall_slot / (5 * cpu_cycles))", + "PublicDescription": "Retiring L1 topdown metric", + "BriefDescription": "Retiring L1 topdown metric", + "MetricGroup": "TopDownL1", + "MetricName": "retiring" + }, + { + "MetricExpr": "stall_slot_backend / (5 * cpu_cycles)", + "PublicDescription": "Backend Bound L1 topdown metric", + "BriefDescription": "Backend Bound L1 topdown metric", + "MetricGroup": "TopDownL1", + "MetricName": "backend_bound" + } +] \ No newline at end of file -- 1.8.3.1
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