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doc/dev/cpu-profiler.rst
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Kefu Chai
doc/dev: update to adapt the cmake+ninja transition
16 мар 2021, 15:22
16 мар 2021, 15:22
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===================== Installing Oprofile ===================== The easiest way to profile Ceph's CPU consumption is to use the `oprofile`_ system-wide profiler. .. _oprofile: http://oprofile.sourceforge.net/about/ Installation ============ If you are using a Debian/Ubuntu distribution, you can install ``oprofile`` by executing the following:: sudo apt-get install oprofile oprofile-gui Compiling Ceph for Profiling ============================ To compile Ceph for profiling, first clean everything. :: git clean -dfx Finally, compile Ceph. :: ./do-cmake.sh -DCMAKE_CXX_FLAGS="-fno-omit-frame-pointer -O2 -g" cd build cmake --build . In this command, ``CMAKE_CXX_FLAGS`` is specified. This provides callgraph output. Ceph Configuration ================== Ensure that you disable ``lockdep``. Consider setting logging to levels appropriate for a production cluster. See `Ceph Logging and Debugging`_ for details. .. _Ceph Logging and Debugging: ../../rados/troubleshooting/log-and-debug See the `CPU Profiling`_ section of the RADOS Troubleshooting documentation for details on using Oprofile. .. _CPU Profiling: ../../rados/troubleshooting/cpu-profiling