diff options
| -rwxr-xr-x | tools/perf/pmu-events/intel_metrics.py | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events/intel_metrics.py index 05f3d94ec5d5..e1944d821248 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -124,6 +124,143 @@ def Tsx() -> Optional[MetricGroup]: ], description="Breakdown of transactional memory statistics") +def IntelBr(): + ins = Event("instructions") + + def Total() -> MetricGroup: + br_all = Event("BR_INST_RETIRED.ALL_BRANCHES", "BR_INST_RETIRED.ANY") + br_m_all = Event("BR_MISP_RETIRED.ALL_BRANCHES", + "BR_INST_RETIRED.MISPRED", + "BR_MISP_EXEC.ANY") + br_clr = None + try: + br_clr = Event("BACLEARS.ANY", "BACLEARS.ALL") + except: + pass + + br_r = d_ratio(br_all, interval_sec) + ins_r = d_ratio(ins, br_all) + misp_r = d_ratio(br_m_all, br_all) + clr_r = d_ratio(br_clr, interval_sec) if br_clr else None + + return MetricGroup("lpm_br_total", [ + Metric("lpm_br_total_retired", + "The number of branch instructions retired per second.", br_r, + "insn/s"), + Metric( + "lpm_br_total_mispred", + "The number of branch instructions retired, of any type, that were " + "not correctly predicted as a percentage of all branch instrucions.", + misp_r, "100%"), + Metric("lpm_br_total_insn_between_branches", + "The number of instructions divided by the number of branches.", + ins_r, "insn"), + Metric("lpm_br_total_insn_fe_resteers", + "The number of resync branches per second.", clr_r, "req/s" + ) if clr_r else None + ]) + + def Taken() -> MetricGroup: + br_all = Event("BR_INST_RETIRED.ALL_BRANCHES", "BR_INST_RETIRED.ANY") + br_m_tk = None + try: + br_m_tk = Event("BR_MISP_RETIRED.NEAR_TAKEN", + "BR_MISP_RETIRED.TAKEN_JCC", + "BR_INST_RETIRED.MISPRED_TAKEN") + except: + pass + br_r = d_ratio(br_all, interval_sec) + ins_r = d_ratio(ins, br_all) + misp_r = d_ratio(br_m_tk, br_all) if br_m_tk else None + return MetricGroup("lpm_br_taken", [ + Metric("lpm_br_taken_retired", + "The number of taken branches that were retired per second.", + br_r, "insn/s"), + Metric( + "lpm_br_taken_mispred", + "The number of retired taken branch instructions that were " + "mispredicted as a percentage of all taken branches.", misp_r, + "100%") if misp_r else None, + Metric( + "lpm_br_taken_insn_between_branches", + "The number of instructions divided by the number of taken branches.", + ins_r, "insn"), + ]) + + def Conditional() -> Optional[MetricGroup]: + try: + br_cond = Event("BR_INST_RETIRED.COND", + "BR_INST_RETIRED.CONDITIONAL", + "BR_INST_RETIRED.TAKEN_JCC") + br_m_cond = Event("BR_MISP_RETIRED.COND", + "BR_MISP_RETIRED.CONDITIONAL", + "BR_MISP_RETIRED.TAKEN_JCC") + except: + return None + + br_cond_nt = None + br_m_cond_nt = None + try: + br_cond_nt = Event("BR_INST_RETIRED.COND_NTAKEN") + br_m_cond_nt = Event("BR_MISP_RETIRED.COND_NTAKEN") + except: + pass + br_r = d_ratio(br_cond, interval_sec) + ins_r = d_ratio(ins, br_cond) + misp_r = d_ratio(br_m_cond, br_cond) + taken_metrics = [ + Metric("lpm_br_cond_retired", "Retired conditional branch instructions.", + br_r, "insn/s"), + Metric("lpm_br_cond_insn_between_branches", + "The number of instructions divided by the number of conditional " + "branches.", ins_r, "insn"), + Metric("lpm_br_cond_mispred", + "Retired conditional branch instructions mispredicted as a " + "percentage of all conditional branches.", misp_r, "100%"), + ] + if not br_m_cond_nt: + return MetricGroup("lpm_br_cond", taken_metrics) + + br_r = d_ratio(br_cond_nt, interval_sec) + ins_r = d_ratio(ins, br_cond_nt) + misp_r = d_ratio(br_m_cond_nt, br_cond_nt) + + not_taken_metrics = [ + Metric("lpm_br_cond_retired", "Retired conditional not taken branch instructions.", + br_r, "insn/s"), + Metric("lpm_br_cond_insn_between_branches", + "The number of instructions divided by the number of not taken conditional " + "branches.", ins_r, "insn"), + Metric("lpm_br_cond_mispred", + "Retired not taken conditional branch instructions mispredicted as a " + "percentage of all not taken conditional branches.", misp_r, "100%"), + ] + return MetricGroup("lpm_br_cond", [ + MetricGroup("lpm_br_cond_nt", not_taken_metrics), + MetricGroup("lpm_br_cond_tkn", taken_metrics), + ]) + + def Far() -> Optional[MetricGroup]: + try: + br_far = Event("BR_INST_RETIRED.FAR_BRANCH") + except: + return None + + br_r = d_ratio(br_far, interval_sec) + ins_r = d_ratio(ins, br_far) + return MetricGroup("lpm_br_far", [ + Metric("lpm_br_far_retired", "Retired far control transfers per second.", + br_r, "insn/s"), + Metric( + "lpm_br_far_insn_between_branches", + "The number of instructions divided by the number of far branches.", + ins_r, "insn"), + ]) + + return MetricGroup("lpm_br", [Total(), Taken(), Conditional(), Far()], + description="breakdown of retired branch instructions") + + def main() -> None: global _args @@ -153,6 +290,7 @@ def main() -> None: Rapl(), Smi(), Tsx(), + IntelBr(), ]) if _args.metricgroups: |