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<?xml version="1.0"?> |
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" |
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
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<refentry id="get_page_stats"> |
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<refentryinfo> |
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<date>$Date$</date> |
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<releaseinfo>$Id$</releaseinfo> |
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</refentryinfo> |
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<refmeta> |
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<refentrytitle>get_page_stats</refentrytitle> |
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<manvolnum>3</manvolnum> |
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<refmiscinfo>i-scream</refmiscinfo> |
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</refmeta> |
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<refnamediv> |
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<refname>get_page_stats</refname> |
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<refname>get_page_stats_diff</refname> |
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<refpurpose>get paging statistics</refpurpose> |
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</refnamediv> |
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<refsynopsisdiv> |
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<funcsynopsis> |
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<funcsynopsisinfo>#include <statgrab.h></funcsynopsisinfo> |
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<funcprototype> |
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<funcdef>page_stat_t *<function>get_page_stats</function></funcdef> |
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<void/> |
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</funcprototype> |
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<funcprototype> |
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<funcdef>page_stat_t *<function>get_page_stats_diff</function></funcdef> |
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<void/> |
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</funcprototype> |
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</funcsynopsis> |
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</refsynopsisdiv> |
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<refsect1> |
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<title>Description</title> |
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<para> |
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<function>get_page_stats</function> and |
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<function>get_page_stats_diff</function> both return a pointer to |
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a static buffer of type <structname>page_stat_t</structname>. |
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</para> |
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<para> |
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<function>get_page_stats</function> will return the number of |
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pages the system has paged in and out since bootup. |
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<function>get_page_stats_diff</function> will return the |
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difference since last time it was called. If it has not been |
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called before, it will return |
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<function>get_page_stats</function>. |
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</para> |
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</refsect1> |
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<refsect1> |
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<title>Return Values</title> |
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<programlisting> |
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typedef struct{ |
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long long pages_pagein; |
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long long pages_pageout; |
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time_t systime; |
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}page_stat_t; |
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</programlisting> |
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<variablelist> |
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<varlistentry> |
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<term> |
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<structfield>pages_pagein</structfield> |
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</term> |
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<listitem> |
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<para> |
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The number of pages swapped into memory. |
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</para> |
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</listitem> |
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</varlistentry> |
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<varlistentry> |
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<term> |
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<structfield>pages_pageout</structfield> |
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</term> |
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<listitem> |
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<para> |
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The number of pages swapped out of memory (to swap). |
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</para> |
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</listitem> |
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</varlistentry> |
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<varlistentry> |
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<term> |
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<structfield>systime</structfield> |
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</term> |
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<listitem> |
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<para> |
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The time period over which <parameter>pages_pagein</parameter> |
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and <parameter>pages_pageout</parameter> were transferred. |
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</para> |
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</listitem> |
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</varlistentry> |
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</variablelist> |
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</refsect1> |
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<refsect1> |
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<title>Bugs</title> |
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<para> |
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Solaris doesn't seem to report accurately. It reports the number |
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of pages swapped into memory, not necessarily from swap. This |
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feature isn't deemed entirely reliable. |
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</para> |
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</refsect1> |
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<refsect1> |
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<title>See Also</title> |
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<para>Nothing yet</para> |
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</refsect1> |
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<refsect1> |
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<title>Website</title> |
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<simplelist type="vert"> |
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<member> |
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<ulink url="http://www.i-scream.org">http://www.i-scream.org</ulink> |
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</member> |
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</simplelist> |
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</refsect1> |
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</refentry> |
