How do I collect CPU performance counters in Windows?

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1. xperf. Windows Performance Toolkit, Windows Assessment and Deployment Kit (Windows ADK). xperf PATH.

   
   
   
   
   

2. tracelog. , . :

   
   
   
   
   

   • Windows Driver Kit

     
     
     
     
     

   • Visual Studio

     
     
     
     
     

   • Windows SDK

     
     
     
     
     

Tracelog PATH, : "C:\Program Files (x86)\Windows Kits\10\bin\10.0.17763.0\x64\



". .

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tracelog xperf

, , . ( ) , ( ):

tracelog.exe -start counters -f counters.etl -eflag CSWITCH+PROC_THREAD+LOADER -PMC BranchMispredictions,BranchInstructions:CSWITCH
<your app>
xperf -stop counters
xperf -merge counters.etl pmc_counters_merged.etl
xperf -i pmc_counters_merged.etl -o pmc_counters.txt

      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

pmccounters.txt, . , :

1. Pmc ( ):

   
   
   
   
   

Pmc,  TimeStamp,   ThreadID, BranchMispredictions, BranchInstructions
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

2. CSwitch ( ):

   
   
   
   
   

CSwitch,  TimeStamp, New Process Name ( PID),    New TID, NPri, NQnt, TmSinceLast, 
WaitTime, Old Process Name ( PID),    Old TID, OPri, OQnt,        OldState,      
Wait Reason, Swapable, InSwitchTime, CPU, IdealProc,  OldRemQnt, NewPriDecr, 
PrevCState, OldThrdBamQosLevel, NewThrdBamQosLevel
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

:

Pmc,     214810,       5956, 1101534, 44324578
                CSwitch,     214810, ConditionalCount.exe (14224),       5956,    9,   -1,           6,        0,           System (   4),        560,   12,   -1,         Waiting,          WrQueue,  NonSwap,      6,   1,   3,   84017152,    0,    0,   Important,   Important
                    Pmc,     214821,      14460, 1101713, 44326484
                CSwitch,     214821,        csrss.exe ( 888),      14460,   14,   -1,       73556,        5, ConditionalCount.exe (14224),       5956,    9,   -1,         Waiting,       WrLpcReply, Swapable,     11,   1,   3,   77701120,    0,    0,   Important,   Important

      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

, CSwitch Pmc. , . (ConditionalCount.exe



) (csrss.exe



). , Old Process Name (PID) CSwitch 214821. .. , ConditionalCount.exe



( 214821 214810).

BranchMispredictions . , , Pmc. 1101713 - 1101534 = 179 . , .

: , , Linux perf stat



. , , . - . , - , .

Python

. PMC , (2 ):

python.exe etwpmcparser.py pmccounters.txt <your app>
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

  , (Win 10, Intel (R) Core (TM) i5-7300U).

 Process name:  branch misp rate, [br_misp, total branc]
  ConditionalCount.exe (14224):            21.91%, [109184040, 498250335], 3690 context switches, time: 1093072
  ConditionalCount.exe (10964):             0.07%, [369677, 496453009],    761 context switches,  time: 257492

      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

Vtune .

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> tracelog.exe -profilesources Help
Id  Name                        Interval  Min      Max
--------------------------------------------------------------
  0 Timer                          10000  1221    1000000
  2 TotalIssues                    65536  4096 2147483647
  6 BranchInstructions             65536  4096 2147483647
 10 CacheMisses                    65536  4096 2147483647
 11 BranchMispredictions           65536  4096 2147483647
 19 TotalCycles                    65536  4096 2147483647
 25 UnhaltedCoreCycles             65536  4096 2147483647
 26 InstructionRetired             65536  4096 2147483647
 27 UnhaltedReferenceCycles        65536  4096 2147483647
 28 LLCReference                   65536  4096 2147483647
 29 LLCMisses                      65536  4096 2147483647
 30 BranchInstructionRetired       65536  4096 2147483647
 31 BranchMispredictsRetired       65536  4096 2147483647
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

- , Vtune perf Linux. , (. ). - , , , .

-, PMC, , tracelog



, python, .

- , . .

, , Windows . , .

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