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Does anyone use the "Coverage" option when compiling? I would like to get a profile of my executable, so I compile with 'catkin_make -DCMAKE_BUILD_TYPE=Coverage' and have confirmed that the code runs noticeably slower (although this may also be due to more optimization being disabled?). I do not know where to recover the code profile information from.
Running Groovy on Ubuntu 12.04.
I'm not directly familiar with the Coverage build type, but if it creates binaries instrumented with gcov (fi) then wouldn't the profiling data be generated upon executing the binary, and in the No.cwd?
Edit: also, is the Coverage build type still supported with catkin? I can only find references to it in rosbuild CMakeLists.txt.
Edit2: according to this stack overflow answer, the coverage information ends up in the directory where the object files are, so for CMake / catkin that would probably be in the build space of your workspace.
Thanks, that was a good link. I searched my package high and low for any coverage files, or links from executables to coverage files, and came up with nil. Passing Catkin the Coverage flag makes entire package recompile, but apparently not actually generate coverage info.
Asked: 2014-01-22 06:27:43 -0500
Seen: 1,792 times
Last updated: Jan 22 '14
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FYI - I ended up using valgrind to profile my code. To profile a single node, it may be easiest to run "valgrind --tool=callgrind ./<name_of_node_executable>" in the directory of your executable rather than using http://wiki.ros.org/roslaunch/Tutorials/Roslaunch%20Nodes%20in%20Valgrind%20or%20GDB