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rsync

    1: Notes on rsync profiling
    2: 
    3: strlcpy is hot:
    4: 
    5:                 0.00    0.00       1/7735635     push_dir [68]
    6:                 0.00    0.00       1/7735635     pop_dir [71]
    7:                 0.00    0.00       1/7735635     send_file_list [15]
    8:                 0.01    0.00   18857/7735635     send_files [4]
    9:                 0.04    0.00  129260/7735635     send_file_entry [18]
   10:                 0.04    0.00  129260/7735635     make_file [20]
   11:                 0.04    0.00  141666/7735635     send_directory <cycle 1> [36]
   12:                 2.29    0.00 7316589/7735635     f_name [13]
   13: [14]    11.7    2.42    0.00 7735635         strlcpy [14]
   14: 
   15: 
   16: Here's the top few functions:
   17: 
   18:  46.23      9.57     9.57 13160929     0.00     0.00  mdfour64
   19:  14.78     12.63     3.06 13160929     0.00     0.00  copy64
   20:  11.69     15.05     2.42  7735635     0.00     0.00  strlcpy
   21:  10.05     17.13     2.08    41438     0.05     0.38  sum_update
   22:   4.11     17.98     0.85 13159996     0.00     0.00  mdfour_update
   23:   1.50     18.29     0.31                             file_compare
   24:   1.45     18.59     0.30   129261     0.00     0.01  send_file_entry
   25:   1.23     18.84     0.26  2557585     0.00     0.00  f_name
   26:   1.11     19.07     0.23  1483750     0.00     0.00  u_strcmp
   27:   1.11     19.30     0.23   118129     0.00     0.00  writefd_unbuffered
   28:   0.92     19.50     0.19  1085011     0.00     0.00  writefd
   29:   0.43     19.59     0.09   156987     0.00     0.00  read_timeout
   30:   0.43     19.68     0.09   129261     0.00     0.00  clean_fname
   31:   0.39     19.75     0.08    32887     0.00     0.38  matched
   32:   0.34     19.82     0.07        1    70.00 16293.92  send_files
   33:   0.29     19.89     0.06   129260     0.00     0.00  make_file
   34:   0.29     19.95     0.06    75430     0.00     0.00  read_unbuffered
   35: 
   36: 
   37: 
   38: mdfour could perhaps be made faster:
   39: 
   40: /* NOTE: This code makes no attempt to be fast!  */
   41: 
   42: There might be an optimized version somewhere that we can borrow.