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AMD family 15h events

This is a list of AMD64 family 15h's CPU's performance counter event types. Please see BIOS and Kernel Developer's Guide for AMD Family 15h Processors.

NameDescriptionCounters usableUnit mask options
DISPATCHED_FPU_OPS FPU Pipe Assignment 3 0x01: Total number uops assigned to Pipe 0
0x02: Total number uops assigned to Pipe 1
0x04: Total number uops assigned to Pipe 2
0x08: Total number uops assigned to Pipe 3
0x10: Total number dual-pipe uops assigned to Pipe 0
0x20: Total number dual-pipe uops assigned to Pipe 1
0x40: Total number dual-pipe uops assigned to Pipe 2
0x80: Total number dual-pipe uops assigned to Pipe 3
0xff: All ops
CYCLES_FPU_EMPTY FP Scheduler Empty 3, 4, 5
RETIRED_SSE_OPS Retired SSE/BNI Ops 3 0x01: Single Precision add/subtract FLOPS
0x02: Single precision multiply FLOPS
0x04: Single precision divide/square root FLOPS
0x08: Single precision multiply-add FLOPS. Multiply-add counts as 2 FLOPS
0x10: Double precision add/subtract FLOPS
0x20: Double precision multiply FLOPS
0x40: Double precision divide/square root FLOPS
0x80: Double precision multiply-add FLOPS. Multiply-add counts as 2 FLOPS
MOVE_SCALAR_OPTIMIZATION Number of Move Elimination and Scalar Op Optimization 3 0x01: Number of SSE Move Ops
0x02: Number of SSE Move Ops eliminated
0x04: Number of Ops that are candidates for optimization
0x08: Number of Scalar ops optimized
RETIRED_SERIALIZING_OPS Retired Serializing Ops 3, 4, 5 0x01: SSE bottom-executing uops retired
0x02: SSE control word mispredict traps due to mispredictions
0x04: x87 bottom-executing uops retired
0x08: x87 control word mispredict traps due to mispredictions
BOTTOM_EXECUTE_OP Number of Cycles that a Bottom-Execute uop is in the FP Scheduler 3, 4, 5
SEGMENT_REGISTER_LOADS Segment Register Loads all 0x01: ES register
0x02: CS register
0x04: SS register
0x08: DS register
0x10: FS register
0x20: GS register
0x40: HS register
PIPELINE_RESTART_DUE_TO_SELF_MODIFYING_CODE Pipeline Restart Due to Self-Modifying Code all
PIPELINE_RESTART_DUE_TO_PROBE_HIT Pipeline Restart Due to Probe Hit all
LOAD_Q_STORE_Q_FULL Load Queue/Store Queue Full 0, 1, 2 0x01: Cycles that the load buffer is full
0x02: Cycles that the store buffer is full
LOCKED_OPS Locked Operations all 0x01: Number of locked instructions executed
0x04: Cycles spent non-speculative phase (including cache miss penalty)
0x08: Cycles waiting for a cache hit (cache miss penalty)
RETIRED_CLFLUSH_INSTRUCTIONS Retired CLFLUSH Instructions all
RETIRED_CPUID_INSTRUCTIONS Retired CPUID Instructions all
LS_DISPATCH LS Dispatch all 0x01: Loads
0x02: Stores
0x04: Load-op-Stores
CANCELLED_STORE_TO_LOAD Canceled Store to Load Forward Operations all 0x01: Store is smaller than load or different starting byte but partial overlap
SMIS_RECEIVED SMIs Received all
EXECUTED_CFLUSH_INST Executed CLFLUSH Instructions all
DATA_CACHE_ACCESSES Data Cache Accesses all
DATA_CACHE_MISSES Data Cache Misses all 0x01: First data cache miss or streaming store to a 64B cache line
0x02: First streaming store to a 64B cache line
DATA_CACHE_REFILLS_FROM_L2_OR_NORTHBRIDGE Data Cache Refills from L2 or System all 0x01: Fill with good data. (Final valid status is valid)
0x02: Early valid status turned out to be invalid
0x08: Fill with read data error
DATA_CACHE_REFILLS_FROM_NORTHBRIDGE Data Cache Refills from System 0, 1, 2
UNIFIED_TLB_HIT Unified TLB Hit 0, 1, 2 0x01: 4 KB unified TLB hit for data
0x02: 2 MB unified TLB hit for data
0x04: 1 GB unified TLB hit for data
0x10: 4 KB unified TLB hit for instruction
0x20: 2 MB unified TLB hit for instruction
0x40: 1 GB unified TLB hit for instruction
0x07: All DTLB hits
0x70: All ITLB hits
0x77: All DTLB and ITLB hits
UNIFIED_TLB_MISS Unified TLB Miss 0, 1, 2 0x01: 4 KB unified TLB miss for data
0x02: 2 MB unified TLB miss for data
0x04: 1 GB unified TLB miss for data
0x10: 4 KB unified TLB miss for instruction
0x20: 2 MB unified TLB miss for instruction
0x40: 1 GB unified TLB miss for instruction
0x07: All DTLB misses
0x70: All ITLB misses
0x77: All DTLB and ITLB misses
MISALIGNED_ACCESSES Misaligned Accesses all
PREFETCH_INSTRUCTIONS_DISPATCHED Prefetch Instructions Dispatched all 0x01: Load (Prefetch, PrefetchT0/T1/T2)
0x02: Store (PrefetchW)
0x04: NTA (PrefetchNTA)
INEFFECTIVE_SW_PREFETCHES Ineffective Software Prefetches all 0x01: Software prefetch hit in L1 data cache
0x08: Software prefetch hit in the L2
MEMORY_REQUESTS Memory Requests by Type 0, 1, 2 0x01: Requests to non-cacheable (UC) memory
0x02: Requests to write-combining (WC) memory
0x80: Streaming store (SS) requests
DATA_PREFETCHER Data Prefetcher 0, 1, 2 0x02: Prefetch attempts
MAB_REQS MAB Requests 0, 1, 2 0x01: MAB ID bit 0
0x02: MAB ID bit 1
0x04: MAB ID bit 2
0x08: MAB ID bit 3
0x10: MAB ID bit 4
0x20: MAB ID bit 5
0x40: MAB ID bit 6
0x80: MAB ID bit 7
MAB_WAIT MAB Wait Cycles 0, 1, 2 0x01: MAB ID bit 0
0x02: MAB ID bit 1
0x04: MAB ID bit 2
0x08: MAB ID bit 3
0x10: MAB ID bit 4
0x20: MAB ID bit 5
0x40: MAB ID bit 6
0x80: MAB ID bit 7
SYSTEM_READ_RESPONSES Response From System on Cache Refills 0, 1, 2 0x01: Exclusive
0x02: Modified
0x04: Shared
0x08: Owned
0x10: Data Error
0x20: Modified unwritten
OCTWORD_WRITE_TRANSFERS Octwords Written to System 0, 1, 2 0x01: Octword write transfer
CPU_CLK_UNHALTED CPU Clocks not Halted 0, 1, 2
REQUESTS_TO_L2 Requests to L2 Cache 0, 1, 2 0x01: IC fill
0x02: DC fill
0x04: TLB fill (page table walks)
0x08: NB probe request
0x10: Canceled request
0x40: L2 cache prefetcher request
L2_CACHE_MISS L2 Cache Misses 0, 1, 2 0x01: IC fill
0x02: DC fill (includes possible replays, whereas PMCx041 does not)
0x04: TLB page table walks
0x10: L2 cache prefetcher request
L2_CACHE_FILL_WRITEBACK L2 Fill/Writeback 0, 1, 2 0x01: L2 fills from system
0x02: L2 Writebacks to system (Clean and Dirty)
0x04: L2 Clean Writebacks to system
PAGE_SPLINTERING Page Splintering 0, 1, 2 0x01: Guest page size is larger than host page size when nested paging is enabled
0x02: Splintering due to MTRRs, IORRs, APIC, TOMs or other special address region
0x04: Host page size is larger than the guest page size
L2_PREFETCHER_TRIGGER L2 Prefetcher Trigger Events 0, 1, 2 0x01: Load L1 miss seen by prefetcher
0x02: Store L1 miss seen by prefetcher
INSTRUCTION_CACHE_FETCHES Instruction Cache Fetches 0, 1, 2
INSTRUCTION_CACHE_MISSES Instruction Cache Misses 0, 1, 2
INSTRUCTION_CACHE_REFILLS_FROM_L2 Instruction Cache Refills from L2 0, 1, 2
INSTRUCTION_CACHE_REFILLS_FROM_SYSTEM Instruction Cache Refills from System 0, 1, 2
L1_ITLB_MISS_AND_L2_ITLB_HIT L1 ITLB Miss, L2 ITLB Hit 0, 1, 2
L1_ITLB_MISS_AND_L2_ITLB_MISS L1 ITLB Miss, L2 ITLB Miss 0, 1, 2 0x01: Instruction fetches to a 4K page
0x02: Instruction fetches to a 2M page
0x04: Instruction fetches to a 1G page
PIPELINE_RESTART_DUE_TO_INSTRUCTION_STREAM_PROBE Pipeline Restart Due to Instruction Stream Probe 0, 1, 2
INSTRUCTION_FETCH_STALL Instruction Fetch Stall 0, 1, 2
RETURN_STACK_HITS Return Stack Hits 0, 1, 2
RETURN_STACK_OVERFLOWS Return Stack Overflows 0, 1, 2
INSTRUCTION_CACHE_VICTIMS Instruction Cache Victims 0, 1, 2
INSTRUCTION_CACHE_INVALIDATED Instruction Cache Lines Invalidated 0, 1, 2 0x01: Non-SMC invalidating probe that missed on in-flight instructions
0x02: Non-SMC invalidating probe that hit on in-flight instructions
0x04: SMC invalidating probe that missed on in-flight instructions
0x08: SMC invalidating probe that hit on in-flight instructions
ITLB_RELOADS ITLB Reloads 0, 1, 2
ITLB_RELOADS_ABORTED ITLB Reloads Aborted 0, 1, 2
RETIRED_INSTRUCTIONS Retired Instructions all
RETIRED_UOPS Retired uops all
RETIRED_BRANCH_INSTRUCTIONS Retired Branch Instructions all
RETIRED_MISPREDICTED_BRANCH_INSTRUCTIONS Retired Mispredicted Branch Instructions all
RETIRED_TAKEN_BRANCH_INSTRUCTIONS Retired Taken Branch Instructions all
RETIRED_TAKEN_BRANCH_INSTRUCTIONS_MISPREDICTED Retired Taken Branch Instructions Mispredicted all
RETIRED_FAR_CONTROL_TRANSFERS Retired Far Control Transfers all
RETIRED_BRANCH_RESYNCS Retired Branch Resyncs all
RETIRED_NEAR_RETURNS Retired Near Returns all
RETIRED_NEAR_RETURNS_MISPREDICTED Retired Near Returns Mispredicted all
RETIRED_INDIRECT_BRANCHES_MISPREDICTED Retired Indirect Branches Mispredicted all
RETIRED_MMX_FP_INSTRUCTIONS Retired MMX/FP Instructions all 0x01: x87 instructions
0x02: MMX(tm) instructions
0x04: SSE instructions (SSE,SSE2,SSE3,SSSE3,SSE4A,SSE4.1,SSE4.2,AVX,XOP,FMA4)
INTERRUPTS_MASKED_CYCLES Interrupts-Masked Cycles all
INTERRUPTS_MASKED_CYCLES_WITH_INTERRUPT_PENDING Interrupts-Masked Cycles with Interrupt Pending all
INTERRUPTS_TAKEN Interrupts Taken all
DECODER_EMPTY Decoder Empty 0, 1, 2
DISPATCH_STALLS Dispatch Stalls 0, 1, 2
DISPATCH_STALL_FOR_SERIALIZATION Microsequencer Stall due to Serialization 0, 1, 2
DISPATCH_STALL_FOR_RETIRE_QUEUE_FULL Dispatch Stall for Instruction Retire Q Full 0, 1, 2
DISPATCH_STALL_FOR_INT_SCHED_QUEUE_FULL Dispatch Stall for Integer Scheduler Queue Full 0, 1, 2
DISPATCH_STALL_FOR_FPU_FULL Dispatch Stall for FP Scheduler Queue Full 0, 1, 2
DISPATCH_STALL_FOR_LDQ_FULL Dispatch Stall for LDQ Full 0, 1, 2
MICROSEQ_STALL_WAITING_FOR_ALL_QUIET Microsequencer Stall Waiting for All Quiet 0, 1, 2
FPU_EXCEPTIONS FPU Exceptions all 0x01: Total microfaults
0x02: Total microtraps
0x04: Int2Ext faults
0x08: Ext2Int faults
0x10: Bypass faults
DR0_BREAKPOINTS DR0 Breakpoint Match all
DR1_BREAKPOINTS DR1 Breakpoint Match all
DR2_BREAKPOINTS DR2 Breakpoint Match all
DR3_BREAKPOINTS DR3 Breakpoint Match all
IBS_OPS_TAGGED Tagged IBS Ops all 0x01: Number of ops tagged by IBS
0x02: Number of ops tagged by IBS that retired
0x04: Number of times op could not be tagged by IBS because of previous tagged op that has not retired
DISPATCH_STALL_FOR_STQ_FULL Dispatch Stall for STQ Full all
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2014/09/12