2012-11-16 22:57:55 +00:00
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=====================
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Installing Oprofile
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=====================
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The easiest way to profile Ceph's CPU consumption is to use the `oprofile`_
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system-wide profiler.
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.. _oprofile: http://oprofile.sourceforge.net/about/
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Installation
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============
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If you are using a Debian/Ubuntu distribution, you can install ``oprofile`` by
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executing the following::
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sudo apt-get install oprofile oprofile-gui
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Compiling Ceph for Profiling
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============================
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2021-03-14 11:58:51 +00:00
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To compile Ceph for profiling, first clean everything. ::
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2012-11-16 22:57:55 +00:00
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2021-03-14 11:58:51 +00:00
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git clean -dfx
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2012-11-16 22:57:55 +00:00
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2021-03-14 11:58:51 +00:00
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Finally, compile Ceph. ::
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2012-11-16 22:57:55 +00:00
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2021-03-14 11:58:51 +00:00
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./do-cmake.sh -DCMAKE_CXX_FLAGS="-fno-omit-frame-pointer -O2 -g"
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cd build
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cmake --build .
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2012-11-16 22:57:55 +00:00
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2021-03-14 11:58:51 +00:00
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In this command, ``CMAKE_CXX_FLAGS`` is specified. This provides callgraph output.
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2012-11-16 22:57:55 +00:00
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Ceph Configuration
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==================
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2013-04-18 01:18:46 +00:00
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Ensure that you disable ``lockdep``. Consider setting logging to
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2012-11-16 22:57:55 +00:00
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levels appropriate for a production cluster. See `Ceph Logging and Debugging`_
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for details.
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2013-04-18 01:18:46 +00:00
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.. _Ceph Logging and Debugging: ../../rados/troubleshooting/log-and-debug
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2012-11-16 22:57:55 +00:00
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2013-04-18 01:18:46 +00:00
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See the `CPU Profiling`_ section of the RADOS Troubleshooting documentation for details on using Oprofile.
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2012-11-16 22:57:55 +00:00
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2021-03-14 11:58:51 +00:00
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.. _CPU Profiling: ../../rados/troubleshooting/cpu-profiling
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