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cgprof(1) Linux Reference Manual cgprof(1) NAME cgprof - generate colored call graph for profiled executables SYNOPSIS cgprof [-h] [-T dev] [-g gmon_data] [gprof_file] DESCRIPTION cgprof generate a function calling graph for a profiled executable. The ex- ecutable must have been compiled and linked to output data suitable for gprof(1) (look at -pg option of gcc(1)). If no -T option is given, output is dot(1) commands. All the results are printed on standard output. cgprof takes gprof_file as input, or standard input. The result is a directed acyclic graph (DAG), where nodes represent func- tions traversed during the program execution, and edges function calls (ar- row is from the caller to the called). Node colors represent the cumulative execution time spent by a function and its children. Colors range from intense red (100 % time) to pale violet (0 %), like a rainbow. A node is white filled when it has no time execution data available, which may be the case for profiling functions or not in- strumented functions. cgprof helps to have a better understanding of program structure and execu- tion. It makes hot spots identification visual and intuitive, and provides a minimum code coverage function. OPTIONS -h Display this help text. -T dev This option sets the output format to dev. Possible values of dev are : X X11 output, with direct previewing using dotty(1). ps Postscript output, using dot(1) processor. The drawing will be sized to fill one landscape page. EXAMPLE to print a report from execution of test_hash, run the following command: $ cc -pg -o test_hash test_hash.c $ test_hash < test_data $ gprof test_hash | cgprof -Tps | lpr SEE ALSO gprof(1), dot(1), dotty(1), cc(1). HISTORY cgprof is inspired by a gprof2dot, a similar tool from AT&T Research Labs, distributed part of graphviz (http://www.graphviz.org) which includes also dot tools. AUTHOR Marc Vertes <mvertes@free.fr> cgprof-1.2 December 16, 2004 cgprof(1)
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