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Profiling a Program: Where Does It Spend Its Time?
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This manual describes the GNU profiler, 'gprof', and how you can use it
to determine which parts of a program are taking most of the execution
time.  We assume that you know how to write, compile, and execute
programs.  GNU 'gprof' was written by Jay Fenlason.

   This manual is for 'gprof' (GNU Binutils) version 2.38.

   This document is distributed under the terms of the GNU Free
Documentation License version 1.3.  A copy of the license is included in
the section entitled "GNU Free Documentation License".

Introduction: What profiling means, and why it is useful.
Compiling: How to compile your program for profiling.
Executing: Executing your program to generate profile data
Invoking: How to run 'gprof', and its options
Output: Interpreting 'gprof''s output
Inaccuracy: Potential problems you should be aware of
How do I?: Answers to common questions
Incompatibilities: (between GNU 'gprof' and Unix 'gprof'.)
Details: Details of how profiling is done
GNU Free Documentation License: GNU Free Documentation License