remove ceph code

[stor4nfv.git] / src / ceph / doc / rados / troubleshooting / cpu-profiling.rst

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-===============
- CPU Profiling
-===============
-
-If you built Ceph from source and compiled Ceph for use with `oprofile`_
-you can profile Ceph's CPU usage. See `Installing Oprofile`_ for details.
-
-
-Initializing oprofile
-=====================
-
-The first time you use ``oprofile`` you need to initialize it. Locate the
-``vmlinux`` image corresponding to the kernel you are now running. :: 
-
-       ls /boot
-       sudo opcontrol --init
-       sudo opcontrol --setup --vmlinux={path-to-image} --separate=library --callgraph=6
-
-
-Starting oprofile
-=================
-
-To start ``oprofile`` execute the following command:: 
-
-       opcontrol --start
-
-Once you start ``oprofile``, you may run some tests with Ceph. 
-
-
-Stopping oprofile
-=================
-
-To stop ``oprofile`` execute the following command:: 
-
-       opcontrol --stop
-       
-       
-Retrieving oprofile Results
-===========================
-
-To retrieve the top ``cmon`` results, execute the following command:: 
-
-       opreport -gal ./cmon | less     
-       
-
-To retrieve the top ``cmon`` results with call graphs attached, execute the
-following command:: 
-
-       opreport -cal ./cmon | less     
-       
-.. important:: After reviewing results, you should reset ``oprofile`` before
-   running it again. Resetting ``oprofile`` removes data from the session 
-   directory.
-
-
-Resetting oprofile
-==================
-
-To reset ``oprofile``, execute the following command:: 
-
-       sudo opcontrol --reset   
-   
-.. important:: You should reset ``oprofile`` after analyzing data so that 
-   you do not commingle results from different tests.
-
-.. _oprofile: http://oprofile.sourceforge.net/about/
-.. _Installing Oprofile: ../../../dev/cpu-profiler