NAME

       vipsprofile - analyze vips profiles

SYNOPSIS

       vipsprofile

DESCRIPTION

       vipsprofile(1)  analyzes  the  file  written by the --vips-profile option, calculates some
       statistics, and draws a graph of evaluation.

       Run any vips program with the --vips-profile option  to  generate  a  file  called  "vips-
       profile.txt".  This  contains  timing  information  about  CPU  use, memory use and thread
       synchronisation.

       Run vipsprofile(1) to load this file, calculate some  statistics,  and  draw  a  graph  of
       evaluation  saved  to  vips-profile.svg.  This  analysis  can  help track down performance
       problems.

       For example:

         $ vips sharpen shark.jpg x.jpg --vips-profile
         recording profile in vips-profile.txt
         $ vipsprofile
         reading from vips-profile.txt
         loaded 3622 events
         total time = 0.138322
         name          alive   wait%   work%   unkn%   memory  peakm
         worker 20      0.069  34.5    58.9    6.65    3.14    5.56
         worker 21       0.07  1.36    60.2    38.4    2.65    5.07
         worker 22       0.07  33      55.8    11.1    2.62    5.04
         worker 23      0.072  34.2    59.7    6.15    2.72    5.14
         wbuffer 24     0.075  99      1.03    0.00401 0       0
         wbuffer 25     0.075  95.6    4.39    0.00667 0       0
         main 26         0.14  52.8    0       47.2    -11.1   0.787
         peak memory = 21.6 MB
         writing to vips-profile.svg

RETURN VALUE

       returns 0 on success and non-zero on error.

SEE ALSO

       vips(1)

                                         13 December 2013                          VIPSPROFILE(1)