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Commit 447e2959 authored by Todd Gamblin's avatar Todd Gamblin
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SPACK-62: fix for site docs.

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.. _site-configuration: .. _site-configuration:
Site-specific configuration Site configuration
=================================== ===================================
.. _temp-space: .. _temp-space:
...@@ -134,3 +134,53 @@ Set concretizer to *your own* class instead of the default: ...@@ -134,3 +134,53 @@ Set concretizer to *your own* class instead of the default:
concretizer = MyConcretizer() concretizer = MyConcretizer()
The next time you run Spack, your changes should take effect. The next time you run Spack, your changes should take effect.
Profiling
~~~~~~~~~~~~~~~~~~~~~
Spack has some limited builtin support for profiling, and can report
statistics using standard Python timing tools. To use this feature,
supply ``-p`` to Spack on the command line, before any subcommands.
.. _spack-p:
``spack -p``
^^^^^^^^^^^^^^^^^^
``spack -p`` output looks like this:
.. code-block:: sh
$ spack -p graph dyninst
o dyninst
|\
| |\
| o | libdwarf
|/ /
o | libelf
/
o boost
307670 function calls (305943 primitive calls) in 0.127 seconds
Ordered by: internal time
ncalls tottime percall cumtime percall filename:lineno(function)
853 0.021 0.000 0.066 0.000 inspect.py:472(getmodule)
51197 0.011 0.000 0.018 0.000 inspect.py:51(ismodule)
73961 0.010 0.000 0.010 0.000 {isinstance}
1762 0.006 0.000 0.053 0.000 inspect.py:440(getsourcefile)
32075 0.006 0.000 0.006 0.000 {hasattr}
1760 0.004 0.000 0.004 0.000 {posix.stat}
2240 0.004 0.000 0.004 0.000 {posix.lstat}
2602 0.004 0.000 0.011 0.000 inspect.py:398(getfile)
771 0.004 0.000 0.077 0.000 inspect.py:518(findsource)
2656 0.004 0.000 0.004 0.000 {method 'match' of '_sre.SRE_Pattern' objects}
30772 0.003 0.000 0.003 0.000 {method 'get' of 'dict' objects}
...
The bottom of the output shows the top most time consuming functions,
slowest on top. The profiling support is from Python's builtin tool,
`cProfile
<https://docs.python.org/2/library/profile.html#module-cProfile>`_.
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