Commonly Used Metrics for Performance Analysis - Power.org

Metrics for Performance Analysis9.3 Event GroupsThese events are listed in Table 9-1. The relevant events are listed alphabetically by name and each rowincludes the name of a PMC group where the event can be found and a short description. The PMC groupcan be used with tools like hpmcount (see Section 4.2.1) to collect several events at once, minimizing thenumber of runs needed to collect a complete set of data. Events can be used with perf (see Section 5.1),oprofile (see Section 5.2) or tprof (see Section 4.3)The list of groups needed (and the relevant events they include) is provided in Table 9-2.Table 9-1 Branch predition events with their corresponding event groups and brief descriptionEvent Name Group Name Event DescriptionPM_BR_MPRED pm_branch3 Number of Branch MispredictsPM_BR_MPRED_CCACHEpm_branch4Branch Mispredict due to CountCache predictionPM_BR_MPRED_CRPM_BR_MPRED_LSTACKpm_branch4pm_misc8Branch mispredict - taken/nottakenBranch Mispredict due to LinkStackPM_BR_MPRED_TApm_branch4Branch mispredict - targetaddressPM_BR_PRED pm_branch3 Branch Predictions madePM_BR_PRED_CCACHE pm_branch2 Count Cache PredictionsPM_BR_PRED_CR pm_branch2 Branch predict - taken/not takenPM_BR_PRED_LSTACK pm_branch2 Link Stack PredictionsPM_BR_TAKEN pm_branch3 Branch TakenPM_BRU_FIN pm_branch3 Branch Instruction FinishedPM_RUN_INST_CMPL pm_branch3 Run_InstructionsTable 9-2 Events sorted by GroupGroup NameEvent Namepm_branch2PM_BR_PRED_CCACHEPM_BR_PRED_CRPM_BR_PRED_LSTACKpm_branch3PM_BR_MPREDPM_BR_PREDPM_BR_TAKENPM_BRU_FINPM_RUN_INST_CMPLpm_branch4PM_BR_MPRED_CCACHEPM_BR_MPRED_CRPM_BR_MPRED_TApm_misc8PM_BR_MPRED_LSTACKCopyright ©2011 IBM Corporation Page 30 of 52