Commonly Used Metrics for Performance Analysis - Power.org

Metrics for Performance Analysis10.3 Event GroupsThese events are listed in Table 10-1. 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 10-2.Table 10-1 L1 cache data reloads events with their corresponding event groups and brief descriptionEvent NamePM_DATA_FROM_DL2L3_MODGroup Namepm_dsource4Event DescriptionData loaded from distant L2 or L3modifiedPM_DATA_FROM_DL2L3_SHRpm_dsource5Data loaded from distant L2 or L3sharedPM_DATA_FROM_DMEM pm_dsource3 Data loaded from distant memoryPM_DATA_FROM_L2 pm_dsource1 Data loaded from L2PM_DATA_FROM_L21_MODpm_dsource3Data loaded from another L2 onsame chip modifiedPM_DATA_FROM_L21_SHRpm_dsource5Data loaded from another L2 onsame chip sharedPM_DATA_FROM_L3 pm_dsource1 Data loaded from L3PM_DATA_FROM_L31_MODpm_dsource4Data loaded from another L3 onsame chip modifiedPM_DATA_FROM_L31_SHRpm_dsource5Data loaded from another L3 onsame chip sharedPM_DATA_FROM_LMEMPM_DATA_FROM_RL2L3_MODpm_dsource1pm_dsource6Data loaded from local memoryData loaded from remote L2 orL3 modifiedPM_DATA_FROM_RL2L3_SHRpm_dsource6Data loaded from remote L2 orL3 sharedPM_DATA_FROM_RMEM pm_dsource1 Data loaded from remote memoryPM_L1_DCACHE_RELOAD_VALID pm_dsource9 L1 reload data source validPM_LD_MISS_L1 pm_dsource9 Load Missed L1Table 10-2 Events sorted by GroupGroup NameEvent Namepm_dsource1PM_DATA_FROM_L2PM_DATA_FROM_L3PM_DATA_FROM_LMEMPM_DATA_FROM_RMEMpm_dsource3PM_DATA_FROM_DMEMPM_DATA_FROM_L21_MODpm_dsource4PM_DATA_FROM_DL2L3_MODPM_DATA_FROM_L31_MODpm_dsource5PM_DATA_FROM_DL2L3_SHRPM_DATA_FROM_L21_SHRPM_DATA_FROM_L31_SHRpm_dsource6PM_DATA_FROM_RL2L3_MODPM_DATA_FROM_RL2L3_SHRCopyright ©2011 IBM Corporation Page 33 of 52