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ARM V7 events

This is a list of all ARM V7's performance counter event types. Please see ARM11 Technical Reference Manual.

NameDescriptionCounters usableUnit mask options
PMNC_SW_INCR Software increment of PMNC registers 1, 2, 3, 4, 5, 6
IFETCH_MISS Instruction fetch misses from cache or normal cacheable memory 1, 2, 3, 4, 5, 6
ITLB_MISS Instruction fetch misses from TLB 1, 2, 3, 4, 5, 6
DCACHE_REFILL Data R/W operation that causes a refill from cache or normal cacheable memory 1, 2, 3, 4, 5, 6
DCACHE_ACCESS Data R/W from cache 1, 2, 3, 4, 5, 6
DTLB_REFILL Data R/W that causes a TLB refill 1, 2, 3, 4, 5, 6
DREAD Data read architecturally executed (note: architecturally executed = for instructions that are unconditional or that pass the condition code) 1, 2, 3, 4, 5, 6
DWRITE Data write architecturally executed 1, 2, 3, 4, 5, 6
INSTR_EXECUTED All executed instructions 1, 2, 3, 4, 5, 6
EXC_TAKEN Exception taken 1, 2, 3, 4, 5, 6
EXC_EXECUTED Exception return architecturally executed 1, 2, 3, 4, 5, 6
CID_WRITE Instruction that writes to the Context ID Register architecturally executed 1, 2, 3, 4, 5, 6
PC_WRITE SW change of PC, architecturally executed (not by exceptions) 1, 2, 3, 4, 5, 6
PC_IMM_BRANCH Immediate branch instruction executed (taken or not) 1, 2, 3, 4, 5, 6
PC_PROC_RETURN Procedure return architecturally executed (not by exceptions) 1, 2, 3, 4, 5, 6
UNALIGNED_ACCESS Unaligned access architecturally executed 1, 2, 3, 4, 5, 6
PC_BRANCH_MIS_PRED Branch mispredicted or not predicted. Counts pipeline flushes because of misprediction 1, 2, 3, 4, 5, 6
PC_BRANCH_MIS_USED Branch or change in program flow that could have been predicted 1, 2, 3, 4, 5, 6
CPU_CYCLES Number of CPU cycles 0
WRITE_BUFFER_FULL Any write buffer full cycle 1, 2, 3, 4
L2_STORE_MERGED Any store that is merged in L2 cache 1, 2, 3, 4
L2_STORE_BUFF Any bufferable store from load/store to L2 cache 1, 2, 3, 4
L2_ACCESS Any access to L2 cache 1, 2, 3, 4
L2_CACH_MISS Any cacheable miss in L2 cache 1, 2, 3, 4
AXI_READ_CYCLES Number of cycles for an active AXI read 1, 2, 3, 4
AXI_WRITE_CYCLES Number of cycles for an active AXI write 1, 2, 3, 4
MEMORY_REPLAY Any replay event in the memory subsystem 1, 2, 3, 4
UNALIGNED_ACCESS_REPLAY Unaligned access that causes a replay 1, 2, 3, 4
L1_DATA_MISS L1 data cache miss as a result of the hashing algorithm 1, 2, 3, 4
L1_INST_MISS L1 instruction cache miss as a result of the hashing algorithm 1, 2, 3, 4
L1_DATA_COLORING L1 data access in which a page coloring alias occurs 1, 2, 3, 4
L1_NEON_DATA NEON data access that hits L1 cache 1, 2, 3, 4
L1_NEON_CACH_DATA NEON cacheable data access that hits L1 cache 1, 2, 3, 4
L2_NEON L2 access as a result of NEON memory access 1, 2, 3, 4
L2_NEON_HIT Any NEON hit in L2 cache 1, 2, 3, 4
L1_INST Any L1 instruction cache access, excluding CP15 cache accesses 1, 2, 3, 4
PC_RETURN_MIS_PRED Return stack misprediction at return stack pop (incorrect target address) 1, 2, 3, 4
PC_BRANCH_FAILED Branch prediction misprediction 1, 2, 3, 4
PC_BRANCH_TAKEN Any predicted branch that is taken 1, 2, 3, 4
PC_BRANCH_EXECUTED Any taken branch that is executed 1, 2, 3, 4
OP_EXECUTED Number of operations executed (in instruction or mutli-cycle instruction) 1, 2, 3, 4
CYCLES_INST_STALL Cycles where no instruction available 1, 2, 3, 4
CYCLES_INST Number of instructions issued in a cycle 1, 2, 3, 4
CYCLES_NEON_DATA_STALL Number of cycles the processor waits on MRC data from NEON 1, 2, 3, 4
CYCLES_NEON_INST_STALL Number of cycles the processor waits on NEON instruction queue or NEON load queue 1, 2, 3, 4
NEON_CYCLES Number of cycles NEON and integer processors are not idle 1, 2, 3, 4
PMU0_EVENTS Number of events from external input source PMUEXTIN[0] 1, 2, 3, 4
PMU1_EVENTS Number of events from external input source PMUEXTIN[1] 1, 2, 3, 4
PMU_EVENTS Number of events from both external input sources PMUEXTIN[0] and PMUEXTIN[1] 1, 2, 3, 4
Bottlenecks occur in surprising places, so don't try to second guess and put in a speed hack until you've proven that's where the bottleneck is. - Rob Pike
2011/08/12