diff options
| author |   Qiaowei Ren <qiaowei.ren@intel.com> | 2018-01-04 13:43:33 +0800 |
|---|---|---|
| committer | Qiaowei Ren <qiaowei.ren@intel.com> | 2018-01-05 11:59:39 +0800 |
| commit | 812ff6ca9fcd3e629e49d4328905f33eee8ca3f5 (patch) | |
| tree | 04ece7b4da00d9d2f98093774594f4057ae561d4 /src/ceph/doc/dev/cpu-profiler.rst | |
| parent | 15280273faafb77777eab341909a3f495cf248d9 (diff) | |
initial code repo
This patch creates initial code repo.
For ceph, luminous stable release will be used for base code,
and next changes and optimization for ceph will be added to it.
For opensds, currently any changes can be upstreamed into original
opensds repo (https://github.com/opensds/opensds), and so stor4nfv
will directly clone opensds code to deploy stor4nfv environment.
And the scripts for deployment based on ceph and opensds will be
put into 'ci' directory.
Change-Id: I46a32218884c75dda2936337604ff03c554648e4
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>
Diffstat (limited to 'src/ceph/doc/dev/cpu-profiler.rst')
| -rw-r--r-- | src/ceph/doc/dev/cpu-profiler.rst | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/ceph/doc/dev/cpu-profiler.rst b/src/ceph/doc/dev/cpu-profiler.rst new file mode 100644 index 0000000..d7a77fe --- /dev/null +++ b/src/ceph/doc/dev/cpu-profiler.rst @@ -0,0 +1,54 @@ +===================== + 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. :: + + make distclean + +Then, export the following settings so that you can see callgraph output. :: + + export CFLAGS="-fno=omit-frame-pointer -O2 -g" + +Finally, compile Ceph. :: + + ./autogen.sh + ./configure + make + +You can use ``make -j`` to execute multiple jobs depending upon your system. For +example:: + + make -j4 + + +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
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