
NOTE: AMD does not provide code-usable names for AMD Opteron processor events. In
addition, the names listed in this section are used for single-core and dual-core AMD Opteron
processors and may differ slightly from the event names used for native quad-core AMD Opteron
processors.
CPU
Displays the following CPU utilization percentages from the /proc/stat file:
• Idle: CPU utilization for idle cycles
• System: CPU utilization for system processes
• User: CPU utilization for user processes
IPC
Displays retired instructions per cycle.
FPC
Displays floating point operations retired per cycle.
Cycles
Displays the following statistics per unhalted clock cycle:
• Far Transfer Resync: DISPATCH_STALL_FAR_TRANSFER
• Waiting for All quiet: DISPATCH_STALL_QUIET_WAIT
• Segment Load: DISPATCH_STALL_SEG_LOAD
• Serialization: DISPATCH_STALL_SERIALIZATION
• Branch Abort to Retire: DISPATCH_STALL_FROM_BRANCH_ABORT
• LS Full: DISPATCH_STALL_LS
• FPU Full: DISPATCH_STALL_FPU
• Reservation Station Full: DISPATCH_STALL_RESERVE_STATION
• Reorder Buffer Full: RDISPATCH_STALL_EORDER_BUFFER
Execution
Displays the following events per unhalted instruction:
• Dispatch Stalls: DISPATCH_STALLS
• Decoder Empty: DECODER_EMPTY
• Dispatching: Unhalted Cycles - DISPATCH_STALLS - DECODER_EMPTY
Dcache
Displays the following types of data cache misses per retired instruction:
• Retired Instructions: Retired instructions (100%)
• L1D Misses: DATA_CACHE_REFILLS_FROM_L2_ALL
• L2D Misses: DATA_CACHE_REFILLS_FROM_LS_FROM.SYSTEM
• Misses: DATA_CACHE_MISSES
• Dcache Fetches: DATA_CACHE_FETCHES
Icache
Displays the following types of instruction cache misses per retired instruction:
• Retired Instructions: Retired instructions (100%)
• L1I Misses: ICACHE_REFILLS_FROM_SYSTEM
Viewing xperf and xcxperf Displays 99
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