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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 297028 $ -->
<!-- State: deprecated -->
<book xml:id="book.memtrack" xmlns="http://docbook.org/ns/docbook">
<title>Memtrack</title>
<titleabbrev>Memtrack</titleabbrev>
<preface xml:id="intro.memtrack">
&reftitle.intro;
<para>
The purpose of this extension is to detect the most memory hungry scripts
and functions.
</para>
<para>
memtrack tracks memory consumption in PHP scripts and produces reports
(warnings) when the consumption reaches certain levels set by the user.
This is achieved by replacing default executor function by a special
function which compares memory usage before and after running the
original executor - this way we can tell how much the memory usage
has changed during the execution of the current part of the code.
</para>
<para>
Zend Engine runs its executor for each opcode array (op_array),
which usually means function, plain script and such, so memtrack doesn't
have any noticeable effect on performance.
</para>
<para>
memtrack doesn't provide any functions, there are only INI directives which
allow you to configure the way it should work.
</para>
&warn.experimental;
</preface>
&reference.memtrack.setup;
&reference.memtrack.constants;
&reference.memtrack.examples;
</book>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
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