perfFirst, compile the code using -fno-omit-frame-pointer -ggdb -pg flags.
Uncomment the line in Makeinclude file at the Nimbus root that is for
profiling with perf. Then clean the previous build and build again:
$ make clean-hard
$ make
Then, run the executables with perf:
$ perf record -g <executable> <args>
It dumps per.data file, that can be processed. To get the call stacks based
on the caller trace.
$ perf report -g fractal,0.5,caller -i <dumped-file>
To produce FlameGraph, download the repo from github. Run the following
command in the directory that has perf.data:
$ perf script | ./stackcollapse-perf.pl | ./flamegraph.pl > result.svg
Uncomment -D_NIMBUS_NO_DBG line from Makeinclude file at the root.
Uncomment add_definitions(-D_NIMBUS_NO_DBG)
from application/water_multiple/CMakeLists.txt
Comment out ADD_DEFINITIONS (-Werror)
from application/physbam-lib/Scripts/CMake/Compiler_Flags.cmake
Make sure that you make clean-hard and make to rebuild.