m5stats.txt

M5,一个功能强大的多处理器系统模拟器.很多针对处理器架构,性能的研究都使用它作为模拟平台

system.cpu.icache.prefetcher.num_hwpf_already_in_prefetcher            0                       # number of hwpf that were already in the prefetch queue
system.cpu.icache.prefetcher.num_hwpf_evicted            0                       # number of hwpf removed due to no buffer left
system.cpu.icache.prefetcher.num_hwpf_identified            0                       # number of hwpf identified
system.cpu.icache.prefetcher.num_hwpf_issued            0                       # number of hwpf issued
system.cpu.icache.prefetcher.num_hwpf_removed_MSHR_hit            0                       # number of hwpf removed because MSHR allocated
system.cpu.icache.prefetcher.num_hwpf_span_page            0                       # number of hwpf spanning a virtual page
system.cpu.icache.prefetcher.num_hwpf_squashed_from_miss            0                       # number of hwpf that got squashed due to a miss aborting calculation time
system.cpu.icache.replacements                      0                       # number of replacements
system.cpu.icache.sampled_refs                    310                       # Sample count of references to valid blocks.
system.cpu.icache.soft_prefetch_mshr_full            0                       # number of mshr full events for SW prefetching instrutions
system.cpu.icache.tagsinuse                162.483905                       # Cycle average of tags in use
system.cpu.icache.total_refs                     1220                       # Total number of references to valid blocks.
system.cpu.icache.warmup_cycle                      0                       # Cycle when the warmup percentage was hit.
system.cpu.icache.writebacks                        0                       # number of writebacks
system.cpu.idleCycles                             449                       # Total number of cycles that the CPU has spent unscheduled due to idling
system.cpu.iew.EXEC:branches                     1210                       # Number of branches executed
system.cpu.iew.EXEC:nop                            70                       # number of nop insts executed
system.cpu.iew.EXEC:rate                     0.759310                       # Inst execution rate
system.cpu.iew.EXEC:refs                         2668                       # number of memory reference insts executed
system.cpu.iew.EXEC:stores                       1014                       # Number of stores executed
system.cpu.iew.EXEC:swp                             0                       # number of swp insts executed
system.cpu.iew.WB:consumers                      5427                       # num instructions consuming a value
system.cpu.iew.WB:count                          7728                       # cumulative count of insts written-back
system.cpu.iew.WB:fanout                     0.742583                       # average fanout of values written-back
system.cpu.iew.WB:penalized                         0                       # number of instrctions required to write to 'other' IQ
system.cpu.iew.WB:penalized_rate                    0                       # fraction of instructions written-back that wrote to 'other' IQ
system.cpu.iew.WB:producers                      4030                       # num instructions producing a value
system.cpu.iew.WB:rate                       0.728575                       # insts written-back per cycle
system.cpu.iew.WB:sent                           7840                       # cumulative count of insts sent to commit
system.cpu.iew.branchMispredicts                  420                       # Number of branch mispredicts detected at execute
system.cpu.iew.iewBlockCycles                       4                       # Number of cycles IEW is blocking
system.cpu.iew.iewDispLoadInsts                  2013                       # Number of dispatched load instructions
system.cpu.iew.iewDispNonSpecInsts                 24                       # Number of dispatched non-speculative instructions
system.cpu.iew.iewDispSquashedInsts               185                       # Number of squashed instructions skipped by dispatch
system.cpu.iew.iewDispStoreInsts                 1228                       # Number of dispatched store instructions
system.cpu.iew.iewDispatchedInsts                9927                       # Number of instructions dispatched to IQ
system.cpu.iew.iewExecLoadInsts                  1654                       # Number of load instructions executed
system.cpu.iew.iewExecSquashedInsts               350                       # Number of squashed instructions skipped in execute
system.cpu.iew.iewExecutedInsts                  8054                       # Number of executed instructions
system.cpu.iew.iewIQFullEvents                      0                       # Number of times the IQ has become full, causing a stall
system.cpu.iew.iewIdleCycles                        0                       # Number of cycles IEW is idle
system.cpu.iew.iewLSQFullEvents                     0                       # Number of times the LSQ has become full, causing a stall
system.cpu.iew.iewSquashCycles                    792                       # Number of cycles IEW is squashing
system.cpu.iew.iewUnblockCycles                     0                       # Number of cycles IEW is unblocking
system.cpu.iew.lsq.thread.0.blockedLoads            0                       # Number of blocked loads due to partial load-store forwarding
system.cpu.iew.lsq.thread.0.cacheBlocked            0                       # Number of times an access to memory failed due to the cache being blocked
system.cpu.iew.lsq.thread.0.forwLoads              47                       # Number of loads that had data forwarded from stores
system.cpu.iew.lsq.thread.0.ignoredResponses            3                       # Number of memory responses ignored because the instruction is squashed
system.cpu.iew.lsq.thread.0.invAddrLoads            0                       # Number of loads ignored due to an invalid address
system.cpu.iew.lsq.thread.0.invAddrSwpfs            0                       # Number of software prefetches ignored due to an invalid address
system.cpu.iew.lsq.thread.0.memOrderViolation           68                       # Number of memory ordering violations
system.cpu.iew.lsq.thread.0.rescheduledLoads            1                       # Number of loads that were rescheduled
system.cpu.iew.lsq.thread.0.squashedLoads         1034                       # Number of loads squashed
system.cpu.iew.lsq.thread.0.squashedStores          416                       # Number of stores squashed
system.cpu.iew.memOrderViolationEvents             68                       # Number of memory order violations
system.cpu.iew.predictedNotTakenIncorrect          297                       # Number of branches that were predicted not taken incorrectly
system.cpu.iew.predictedTakenIncorrect            123                       # Number of branches that were predicted taken incorrectly
system.cpu.ipc                               0.530122                       # IPC: Instructions Per Cycle
system.cpu.ipc_total                         0.530122                       # IPC: Total IPC of All Threads
system.cpu.iq.ISSUE:FU_type_0                    8404                       # Type of FU issued
system.cpu.iq.ISSUE:FU_type_0.start_dist
                      No_OpClass            2      0.02%            # Type of FU issued
                          IntAlu         5587     66.48%            # Type of FU issued
                         IntMult            1      0.01%            # Type of FU issued
                          IntDiv            0      0.00%            # Type of FU issued
                        FloatAdd            2      0.02%            # Type of FU issued
                        FloatCmp            0      0.00%            # Type of FU issued
                        FloatCvt            0      0.00%            # Type of FU issued
                       FloatMult            0      0.00%            # Type of FU issued
                        FloatDiv            0      0.00%            # Type of FU issued
                       FloatSqrt            0      0.00%            # Type of FU issued
                         MemRead         1774     21.11%            # Type of FU issued
                        MemWrite         1038     12.35%            # Type of FU issued
                       IprAccess            0      0.00%            # Type of FU issued
                    InstPrefetch            0      0.00%            # Type of FU issued
system.cpu.iq.ISSUE:FU_type_0.end_dist
system.cpu.iq.ISSUE:fu_busy_cnt                   103                       # FU busy when requested
system.cpu.iq.ISSUE:fu_busy_rate             0.012256                       # FU busy rate (busy events/executed inst)
system.cpu.iq.ISSUE:fu_full.start_dist
                      No_OpClass            0      0.00%            # attempts to use FU when none available
                          IntAlu            1      0.97%            # attempts to use FU when none available
                         IntMult            0      0.00%            # attempts to use FU when none available
                          IntDiv            0      0.00%            # attempts to use FU when none available
                        FloatAdd            0      0.00%            # attempts to use FU when none available
                        FloatCmp            0      0.00%            # attempts to use FU when none available
                        FloatCvt            0      0.00%            # attempts to use FU when none available
                       FloatMult            0      0.00%            # attempts to use FU when none available
                        FloatDiv            0      0.00%            # attempts to use FU when none available
                       FloatSqrt            0      0.00%            # attempts to use FU when none available
                         MemRead           68     66.02%            # attempts to use FU when none available
                        MemWrite           34     33.01%            # attempts to use FU when none available
                       IprAccess            0      0.00%            # attempts to use FU when none available
                    InstPrefetch            0      0.00%            # attempts to use FU when none available
system.cpu.iq.ISSUE:fu_full.end_dist
system.cpu.iq.ISSUE:issued_per_cycle.start_dist                     # Number of insts issued each cycle
system.cpu.iq.ISSUE:issued_per_cycle.samples        10158                      
system.cpu.iq.ISSUE:issued_per_cycle.min_value            0                      
                               0         6739   6634.18%           
                               1         1163   1144.91%           
                               2          838    824.97%           
                               3          636    626.11%           
                               4          450    443.00%           
                               5          195    191.97%           
                               6           92     90.57%           
                               7           30     29.53%           
                               8           15     14.77%           
system.cpu.iq.ISSUE:issued_per_cycle.max_value            8                      
system.cpu.iq.ISSUE:issued_per_cycle.end_dist

system.cpu.iq.ISSUE:rate                     0.792307                       # Inst issue rate
system.cpu.iq.iqInstsAdded                       9833                       # Number of instructions added to the IQ (excludes non-spec)