.. _D1.06.01:

**d1.06.01** Measuring performance (CPU) on Linux
=======================================================

**Summary:**

There are tools to track the CPU times used (*profiling*).

On Linux, we use the gprof tool. The use of this tool requires compiling all sources with the "-pg" option. The additional cost of instrumentation is negligible. The result of *profiling* is a text file that must be interpreted.

To simplify interpretation, a tool for drawing a graph from the text file produced by the "profiled" calculation is proposed at the end of the document.

 **Table of Contents**




.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Gprof