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1<?xml version="1.0"?> <!-- -*- sgml -*- -->
2<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
3  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
4
5
6<chapter id="nl-manual" xreflabel="Nulgrind">
7
8<title>Nulgrind: the minimal Valgrind tool</title>
9
10<para>To use this tool, you must specify
11<option>--tool=none</option> on the Valgrind
12command line.</para>
13
14<sect1 id="ms-manual.overview" xreflabel="Overview">
15<title>Overview</title>
16
17<para>Nulgrind is the simplest possible Valgrind tool.  It performs no
18instrumentation or analysis of a program, just runs it normally.  It is
19mainly of use for Valgrind's developers for debugging and regression
20testing.</para>
21
22<para>Nonetheless you can run programs with Nulgrind.  They will run
23roughly 5 times more slowly than normal, for no useful effect.  Note
24that you need to use the option <option>--tool=none</option> to run
25Nulgrind (ie. not <option>--tool=nulgrind</option>).</para>
26
27</sect1>
28
29</chapter>
30
31