Performance Monitoring with PAPI

PerfSuite 1.0 summary for execution of gen.ver2.3.inte (PID=9867, domain=user)

                          Based on 800 MHz -1
                          GenuineIntel 0 CPU
                          CPU revision 6.000

Event Counter Name                                                  Counter Value
===================================================================

    0 Conditional branch instructions mispredicted.............     3006093956
    1 Conditional branch instructions correctly predicted......     32974709880
    2 Conditional branch instructions taken....................     26952022279
    3 Floating point instructions..............................     44525980237
    4 Total cycles.............................................     353262206234
    5 Instructions completed...................................     489764680025
    6 Level 1 data cache accesses..............................     56390921533
    7 Level 1 data cache hits..................................     41911206947
    8 Level 1 data cache misses................................     14615753570
    9 Level 1 load misses......................................     17611912424
   10 Level 1 cache misses.....................................     17597248300
   11 Level 2 data cache accesses..............................     53158617899
   12 Level 2 data cache misses................................     8440205387
   13 Level 2 data cache reads.................................     43528651785
   14 Level 2 data cache writes................................     10240563775
   15 Level 2 load misses......................................     3615923337
   16 Level 2 store misses.....................................     667575973
   17 Level 2 cache misses.....................................     8529931717
   18 Level 3 data cache accesses..............................     3826843278
   19 Level 3 data cache hits..................................     2799591986
   20 Level 3 data cache misses................................     999714206
   21 Level 3 data cache reads.................................     3573882130
   22 Level 3 data cache writes................................     171800425
   23 Level 3 load misses......................................     944624814
   24 Level 3 store misses.....................................     49427000
   25 Level 3 cache misses.....................................     1024569375
   26 Load instructions........................................     84907675686
   27 Load/store instructions completed........................     95346092870
   28 Cycles Stalled Waiting for memory accesses...............     140032176122
   29 Store instructions.......................................     10267472354
   30 Cycles with no instruction issue.........................     67247126931
   31 Data translation lookaside buffer misses.................     8365029

Statistics
===================================================================
Graduated instructions/cycle...................................             1.386406
Graduated floating point instructions/cycle....................             0.126042
Graduated loads & stores/cycle.................................             0.269902
Graduated loads & stores/floating point instruction............             2.141359
L1 Cache Line Reuse............................................             5.523515
L2 Cache Line Reuse............................................             0.731682
L3 Cache Line Reuse............................................             7.442618
L1 Data Cache Hit Rate.........................................             0.846708
L2 Data Cache Hit Rate.........................................             0.422527
L3 Data Cache Hit Rate.........................................             0.881553
% cycles w/no instruction issue................................             19.036037
% cycles waiting for memory access.............................             39.639729
Correct branch predictions/branches taken......................             1.000000
MFLOPS.........................................................             100.833839

Figure 1: Output from the PSRUN tool of PerfSuite showing hardware events and derived metrics gathered via PAPI.

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