Loading from memory, level 2 and level 3 cache

Use Event set 5 for investigations of the loads from main memory, the level 2 and level 3 caches.

Nomenclature of cache levels and locations
level 2	level 2 cache on same chip as processor
level 2.5	level 2 cache on different chip but same MCM as processor
level 2.75	level 2 cache on different MCM, inaccessible on HPCx, since outside LPAR
level 3	level 3 cache on same MCM
level 3.5	level 3 cache on different MCM, inaccessible on HPCx, since outside LPAR

Raw counters
PM_DATA_FROM_MEM	Load operations from main memory
PM_DATA_FROM_L3	Load operations from level 3 cache
PM_DATA_FROM_L35	Load operations from level 3.5 cache
PM_DATA_FROM_L2	Load operations form level 2 cache
PM_DATA_FROM_L25_SHR	Load operations from level 2.5 cache in `read only' state
PM_DATA_FROM_L25_MOD	Load operations from level 2.5 cache in `exclusive' state
PM_DATA_FROM_L275_SHR	Load operations from level 2.75 cache, `read only' state
PM_DATA_FROM_L275_MOD	Load operations from level 2.75 cache, `exclusive' state

Derived Metrics
Total loads from L2	Sum of loads from L2, L2.5 & L2.75 in 1000000 operations This includes data and instructions
L2 load traffic	The above multiplied by a 128 byte cache line Cache line size of L1 and L2 is 128 bytes
L2 load bandwidth	The above divided by the wall-clock time Includes many overheads for HPMCOUNT, more useful for LIBHPM
L2 load miss rate	Sum of loads from L3, L3.5 and Memory divided by the sum of loads from L2, L2.5, L2.75, L3, L3.5 and Memory
Total loads from L3	Sum of loads from L3 & L3.5 in 1000000 operations
L3 load traffic	The above multiplied by a 128 byte cache line Cache line size of L2 relevant
L3 load bandwidth	The above divided by the wall-clock time Includes many overheads for HPMCOUNT, more useful for LIBHPM
L3 load miss rate	Sum of loads from Memory divided by the sum of loads from L3, L3.5 and Memory
Memory load traffic	Loads from memory times a 512 byte cache line Cache line size of L3 is relevant
Memory load bandwidth	The above divided by the wall-clock time Includes many overheads for HPMCOUNT, more useful for LIBHPM