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  • Jiri Olsa's avatar
    perf c2c report: Add cacheline address count column · 03d9fcb7
    Jiri Olsa authored
    
    
    Adding the 'PA cnt' column grouped under data cacheline address.
    
    It shows how many times the physical addresses changed for the hist
    entry. It does not show the number of different physical addresses for
    entry, because we don't store those. We only track the number of times
    we got different address than we currently hold, which is not expensive
    and gives similar info.
    
      $ perf c2c report --stdio
    
      #        ----------- Cacheline ----------    Total      Tot  ----- LLC Load Hitm -----
      # Index             Address  Node  PA cnt  records     Hitm    Total      Lcl      Rmt
      # .....  ..................  ....  ......  .......  .......  .......  .......  .......
      #
            0  0xffff9ad56dca0a80     0       9       10    7.69%        2        2        0
            1  0xffff9ad56dce0a80     0       9        9    7.69%        2        2        0
            2  0xffff9ad37659ad80     0       1        2    3.85%        1        1        0
    
      ...
    
      #        ----- HITM -----  -- Store Refs --  --------- Data address ---------
      #   Num      Rmt      Lcl   L1 Hit  L1 Miss              Offset  Node  PA cnt      Pid
      # .....  .......  .......  .......  .......  ..................  ....  ......  .......
      #
        -------------------------------------------------------------
            0        0        2        3        0  0xffff9ad56dca0a80
        -------------------------------------------------------------
                 0.00%    0.00%   33.33%    0.00%                 0x0     0       1     2510
                 0.00%    0.00%   33.33%    0.00%                 0x4     0       1     2476
                 0.00%    0.00%   33.33%    0.00%                0x20     0       1        0
                 0.00%  100.00%    0.00%    0.00%                0x38     0       1        0
    
    Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Joe Mario <jmario@redhat.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Link: http://lkml.kernel.org/r/20180309101442.9224-10-jolsa@kernel.org
    
    
    Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    03d9fcb7