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