diff options
| -rwxr-xr-x | tools/perf/pmu-events/intel_metrics.py | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events/intel_metrics.py index 94604b1b07d8..05f3d94ec5d5 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -3,6 +3,7 @@ import argparse import math import os +from typing import Optional from metric import (d_ratio, has_event, max, CheckPmu, Event, JsonEncodeMetric, JsonEncodeMetricGroupDescriptions, LoadEvents, Metric, MetricGroup, MetricRef, Select) @@ -75,6 +76,54 @@ def Smi() -> MetricGroup: ], description='System Management Interrupt metrics') +def Tsx() -> Optional[MetricGroup]: + pmu = "cpu_core" if CheckPmu("cpu_core") else "cpu" + cycles = Event('cycles') + cycles_in_tx = Event(f'{pmu}/cycles\\-t/') + cycles_in_tx_cp = Event(f'{pmu}/cycles\\-ct/') + try: + # Test if the tsx event is present in the json, prefer the + # sysfs version so that we can detect its presence at runtime. + transaction_start = Event("RTM_RETIRED.START") + transaction_start = Event(f'{pmu}/tx\\-start/') + except: + return None + + elision_start = None + try: + # Elision start isn't supported by all models, but we'll not + # generate the tsx_cycles_per_elision metric in that + # case. Again, prefer the sysfs encoding of the event. + elision_start = Event("HLE_RETIRED.START") + elision_start = Event(f'{pmu}/el\\-start/') + except: + pass + + return MetricGroup('transaction', [ + Metric('tsx_transactional_cycles', + 'Percentage of cycles within a transaction region.', + Select(cycles_in_tx / cycles, has_event(cycles_in_tx), 0), + '100%'), + Metric('tsx_aborted_cycles', 'Percentage of cycles in aborted transactions.', + Select(max(cycles_in_tx - cycles_in_tx_cp, 0) / cycles, + has_event(cycles_in_tx), + 0), + '100%'), + Metric('tsx_cycles_per_transaction', + 'Number of cycles within a transaction divided by the number of transactions.', + Select(cycles_in_tx / transaction_start, + has_event(cycles_in_tx), + 0), + "cycles / transaction"), + Metric('tsx_cycles_per_elision', + 'Number of cycles within a transaction divided by the number of elisions.', + Select(cycles_in_tx / elision_start, + has_event(elision_start), + 0), + "cycles / elision") if elision_start else None, + ], description="Breakdown of transactional memory statistics") + + def main() -> None: global _args @@ -103,6 +152,7 @@ def main() -> None: Idle(), Rapl(), Smi(), + Tsx(), ]) if _args.metricgroups: |