Commonly Used Metrics for Performance Analysis - Power.org

Metrics for Performance Analysis10 L1 Cache Data Reloads per Reference10.1 Descriptions of EventsThere are 15 events, distributed across 6 event groups, needed for these POWER7 L1 cache data reloadmetrics.This section provides more details on each event and how it is triggered.PM_DATA_FROM_DL2L3_MODData loaded from distant L2 or L3 modifiedThe processor's Data Cache was reloaded with Modified (M) data from a chip's L2 or L3 on a different Node(Distant) due to a demand load .PM_DATA_FROM_DL2L3_SHRData loaded from distant L2 or L3 sharedThe processor's Data Cache was reloaded with Shared (S) data from a chip's L2 or L3 on a different Node(Distant) due to a demand load .PM_DATA_FROM_DMEMData loaded from distant memoryThe processor's Data Cache was reloaded with data from a chip's memory on a different Node (Distant)due to a demand load .PM_DATA_FROM_L2Data loaded from L2The processor's Data Cache was reloaded with data from the local chiplet's L2 cache due to a demand load.PM_DATA_FROM_L21_MODData loaded from another L2 on same chip modifiedThe processor's Data Cache was reloaded with Modified (M) data from another L2 on the same chip due toa demand load .PM_DATA_FROM_L21_SHRData loaded from another L2 on same chip sharedThe processor's Data Cache was reloaded with Shared (S) data from another L2 on the same chip due to ademand load .PM_DATA_FROM_L3Data loaded from L3The processor's Data Cache was reloaded with data from the local chiplet's L3 cache due to a demand load.PM_DATA_FROM_L31_MODData loaded from another L3 on same chip modifiedThe processor's Data Cache was reloaded with Modified (M) data from another L3 on the same chip due toa demand load .PM_DATA_FROM_L31_SHRData loaded from another L3 on same chip sharedThe processor's Data Cache was reloaded with Shared (S) data from another L3 on the same chip due to ademand load .PM_DATA_FROM_LMEMData loaded from local memoryThe processor's Data Cache was reloaded with data from the local chip's memory due to a demand load.PM_DATA_FROM_RL2L3_MODData loaded from remote L2 or L3 modifiedThe processor's Data Cache was reloaded with Modified (M) data from a chip's L2 or L3 on the same Node(Remote) due to a demand load .PM_DATA_FROM_RL2L3_SHRData loaded from remote L2 or L3 sharedThe processor's Data Cache was reloaded with Shared (S) data from a chip's L2 or L3 on the same Node(Remote) due to a demand load .PM_DATA_FROM_RMEMData loaded from remote memoryThe processor's Data Cache was reloaded with data from another chip's memory on the same node due to aCopyright ©2011 IBM Corporation Page 31 of 52