Difference between revisions of "UsingGooglePerformanceTools"
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| − | The Google performance tools are recommended for profiling Wesnoth's CPU and memory usage, especially on Linux. | + | The Google performance tools are recommended for [[ProfilingWesnoth|profiling Wesnoth's CPU and memory usage]], especially on Linux. |
| − | [http://goog-perftools.sourceforge.net/doc/cpu_profiler.html] | + | * [http://goog-perftools.sourceforge.net/doc/cpu_profiler.html Documentation: CPU Profiler] |
| − | [http://goog-perftools.sourceforge.net/doc/heap_profiler.html] | + | * [http://goog-perftools.sourceforge.net/doc/heap_profiler.html Documentation: Heap Profiler] |
| − | These performance tools are now shipped with Debian GNU/Linux and many other Linux-based systems. | + | These performance tools are now shipped with Debian GNU/Linux and many other Linux-based systems. Those which don't have it packages should be able to [http://code.google.com/p/gperftools/?redir=1 get them from here as sourcecode]. |
Wesnoth has been tested successfully using LD_PRELOAD to load the libraries in. Thus on Linux if you just want to profile a run of Wesnoth all you have to do is have the Google performance tools on your system and use something like this before running Wesnoth: | Wesnoth has been tested successfully using LD_PRELOAD to load the libraries in. Thus on Linux if you just want to profile a run of Wesnoth all you have to do is have the Google performance tools on your system and use something like this before running Wesnoth: | ||
| − | export LD_PRELOAD=/path/to/libprofiler.so | + | export LD_PRELOAD=/path/to/libprofiler.so |
| − | export CPUPROFILE=./cpu-profile.dat | + | export CPUPROFILE=./cpu-profile.dat |
To profile the CPU, or, | To profile the CPU, or, | ||
| − | export LD_PRELOAD=/path/to/libtcmalloc.so | + | export LD_PRELOAD=/path/to/libtcmalloc.so |
| − | export HEAPPROFILE=./heap-profile.dat | + | export HEAPPROFILE=./heap-profile.dat |
To profile memory usage. | To profile memory usage. | ||
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Then use, | Then use, | ||
| − | pprof /path/to/wesnoth/binary ./cpu-profile.dat | + | pprof /path/to/wesnoth/binary ./cpu-profile.dat |
To read a profile file. There are a number of commands you can run, but suggested is 'gv' to get graphical output. | To read a profile file. There are a number of commands you can run, but suggested is 'gv' to get graphical output. | ||
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| + | [[Category:Development]] | ||
Latest revision as of 04:49, 8 May 2023
The Google performance tools are recommended for profiling Wesnoth's CPU and memory usage, especially on Linux.
These performance tools are now shipped with Debian GNU/Linux and many other Linux-based systems. Those which don't have it packages should be able to get them from here as sourcecode.
Wesnoth has been tested successfully using LD_PRELOAD to load the libraries in. Thus on Linux if you just want to profile a run of Wesnoth all you have to do is have the Google performance tools on your system and use something like this before running Wesnoth:
export LD_PRELOAD=/path/to/libprofiler.so export CPUPROFILE=./cpu-profile.dat
To profile the CPU, or,
export LD_PRELOAD=/path/to/libtcmalloc.so export HEAPPROFILE=./heap-profile.dat
To profile memory usage.
Then run Wesnoth, exit it cleanly, and you should have a cpu-profile.dat or heap-profile.dat file. The memory profile actually dumps out profile files periodically as it runs.
Then use,
pprof /path/to/wesnoth/binary ./cpu-profile.dat
To read a profile file. There are a number of commands you can run, but suggested is 'gv' to get graphical output.