libstatgrab/docs/sg_get_page_stats.xml

<?xml version="1.0"?>

<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
               "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">

<refentry id="get_page_stats">

  <refentryinfo>
    <date>$Date: 2003/10/02 16:00:05 $</date>
    <releaseinfo>$Id: get_page_stats.xml,v 1.1 2003/10/02 16:00:05 tdb Exp $</releaseinfo>
  </refentryinfo>
  
  <refmeta>
    <refentrytitle>get_page_stats</refentrytitle>
    <manvolnum>3</manvolnum>
    <refmiscinfo>i-scream</refmiscinfo>
  </refmeta>
  
  <refnamediv>
    <refname>get_page_stats</refname>
    <refname>get_page_stats_diff</refname>
    <refpurpose>get paging statistics</refpurpose>
  </refnamediv>
    
  <refsynopsisdiv>
    <funcsynopsis>
      <funcsynopsisinfo>#include &lt;statgrab.h&gt;</funcsynopsisinfo>
      <funcprototype>
        <funcdef>page_stat_t *<function>get_page_stats</function></funcdef>
        <void/>
      </funcprototype>
      <funcprototype>
        <funcdef>page_stat_t *<function>get_page_stats_diff</function></funcdef>
        <void/>
      </funcprototype>
    </funcsynopsis>
  </refsynopsisdiv>
    
  <refsect1>
    <title>Description</title>
    <para>
      <function>get_page_stats</function> and
      <function>get_page_stats_diff</function> both return a pointer to
      a static buffer of type <structname>page_stat_t</structname>.
    </para>
    <para>
      <function>get_page_stats</function> will return the number of
      pages the system has paged in and out since bootup.
      <function>get_page_stats_diff</function> will return the
      difference since last time it was called.  If it has not been
      called before, it will return
      <function>get_page_stats</function>.
    </para>
  </refsect1>
  
  <refsect1>
    <title>Return Values</title>

    <programlisting>
typedef struct{
        long long pages_pagein;
        long long pages_pageout;
        time_t systime;
}page_stat_t;
    </programlisting>

    <variablelist>
      <varlistentry>
        <term>
          <structfield>pages_pagein</structfield>
        </term>
        <listitem>
          <para>
            The number of pages swapped into memory.
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>
          <structfield>pages_pageout</structfield>
        </term>
        <listitem>
          <para>
            The number of pages swapped out of memory (to swap).
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>
          <structfield>systime</structfield>
        </term>
        <listitem>
          <para>
            The time period over which <parameter>pages_pagein</parameter>
            and <parameter>pages_pageout</parameter> were transferred.
          </para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1>
    <title>Bugs</title>
    <para>
      Solaris doesn't seem to report accurately. It reports the number
      of pages swapped into memory, not necessarily from swap. This
      feature isn't deemed entirely reliable.
    </para>
  </refsect1>

  <refsect1>
    <title>See Also</title>

    <simplelist type="inline">
      <member>
        <citerefentry>
          <refentrytitle>statgrab</refentrytitle>
          <manvolnum>3</manvolnum>
        </citerefentry>
      </member>
    </simplelist>
  </refsect1>
  
  <refsect1>
    <title>Website</title>
    
    <simplelist type="vert">
      <member>
        <ulink url="http://www.i-scream.org">http://www.i-scream.org</ulink>
      </member>
    </simplelist>
  </refsect1>

</refentry>
Revision:	1.2
Committed:	Thu Oct 2 17:38:03 2003 UTC (20 years, 7 months ago) by tdb
Content type:	text/xml
Branch:	MAIN
CVS Tags:	LIBSTATGRAB_0_9, LIBSTATGRAB_0_8_2, LIBSTATGRAB_0_8_1, LIBSTATGRAB_0_8, LIBSTATGRAB_0_7, LIBSTATGRAB_0_6_1, LIBSTATGRAB_0_6
Changes since 1.1:	+11 -3 lines
Log Message:	Add a central page statgrab(3) which links all the functions together. Add a link in the See Also section of each manual page back to the central one.
#	User	Rev	Content
1	tdb	1.1	<?xml version="1.0"?>
2
3			<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
4			"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
5
6			<refentry id="get_page_stats">
7
8			<refentryinfo>
9	tdb	1.2	<date>$Date: 2003/10/02 16:00:05 $</date>
10			<releaseinfo>$Id: get_page_stats.xml,v 1.1 2003/10/02 16:00:05 tdb Exp $</releaseinfo>
11	tdb	1.1	</refentryinfo>
12
13			<refmeta>
14			<refentrytitle>get_page_stats</refentrytitle>
15			<manvolnum>3</manvolnum>
16			<refmiscinfo>i-scream</refmiscinfo>
17			</refmeta>
18
19			<refnamediv>
20			<refname>get_page_stats</refname>
21			<refname>get_page_stats_diff</refname>
22			<refpurpose>get paging statistics</refpurpose>
23			</refnamediv>
24
25			<refsynopsisdiv>
26			<funcsynopsis>
27			<funcsynopsisinfo>#include <statgrab.h></funcsynopsisinfo>
28			<funcprototype>
29			<funcdef>page_stat_t *<function>get_page_stats</function></funcdef>
30			<void/>
31			</funcprototype>
32			<funcprototype>
33			<funcdef>page_stat_t *<function>get_page_stats_diff</function></funcdef>
34			<void/>
35			</funcprototype>
36			</funcsynopsis>
37			</refsynopsisdiv>
38
39			<refsect1>
40			<title>Description</title>
41			<para>
42			<function>get_page_stats</function> and
43			<function>get_page_stats_diff</function> both return a pointer to
44			a static buffer of type <structname>page_stat_t</structname>.
45			</para>
46			<para>
47			<function>get_page_stats</function> will return the number of
48			pages the system has paged in and out since bootup.
49			<function>get_page_stats_diff</function> will return the
50			difference since last time it was called. If it has not been
51			called before, it will return
52			<function>get_page_stats</function>.
53			</para>
54			</refsect1>
55
56			<refsect1>
57			<title>Return Values</title>
58
59			<programlisting>
60			typedef struct{
61			long long pages_pagein;
62			long long pages_pageout;
63			time_t systime;
64			}page_stat_t;
65			</programlisting>
66
67			<variablelist>
68			<varlistentry>
69			<term>
70			<structfield>pages_pagein</structfield>
71			</term>
72			<listitem>
73			<para>
74			The number of pages swapped into memory.
75			</para>
76			</listitem>
77			</varlistentry>
78			<varlistentry>
79			<term>
80			<structfield>pages_pageout</structfield>
81			</term>
82			<listitem>
83			<para>
84			The number of pages swapped out of memory (to swap).
85			</para>
86			</listitem>
87			</varlistentry>
88			<varlistentry>
89			<term>
90			<structfield>systime</structfield>
91			</term>
92			<listitem>
93			<para>
94			The time period over which <parameter>pages_pagein</parameter>
95			and <parameter>pages_pageout</parameter> were transferred.
96			</para>
97			</listitem>
98			</varlistentry>
99			</variablelist>
100			</refsect1>
101
102			<refsect1>
103			<title>Bugs</title>
104			<para>
105			Solaris doesn't seem to report accurately. It reports the number
106			of pages swapped into memory, not necessarily from swap. This
107			feature isn't deemed entirely reliable.
108			</para>
109			</refsect1>
110
111			<refsect1>
112			<title>See Also</title>
113	tdb	1.2
114			<simplelist type="inline">
115			<member>
116			<citerefentry>
117			<refentrytitle>statgrab</refentrytitle>
118			<manvolnum>3</manvolnum>
119			</citerefentry>
120			</member>
121			</simplelist>
122	tdb	1.1	</refsect1>
123
124			<refsect1>
125			<title>Website</title>
126
127			<simplelist type="vert">
128			<member>
129			<ulink url="http://www.i-scream.org">http://www.i-scream.org</ulink>
130			</member>
131			</simplelist>
132			</refsect1>
133
134			</refentry>