mirror of
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1498ead5d7
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@2619 af4574ff-66df-0310-9fd7-8a98e5e911e0
158 lines
5.6 KiB
XML
158 lines
5.6 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY sysstat-download-http "http://perso.wanadoo.fr/sebastien.godard/sysstat-&sysstat-version;.tar.gz">
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<!ENTITY sysstat-download-ftp "ftp://ibiblio.org/pub/linux/system/status/sysstat-&sysstat-version;.tar.gz">
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<!ENTITY sysstat-size "124 KB">
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<!ENTITY sysstat-buildsize "1.2 MB">
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<!ENTITY sysstat-time ".12 SBU">
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]>
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<sect1 id="sysstat" xreflabel="Sysstat-&sysstat-version;">
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<sect1info>
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<othername>$LastChangedBy$</othername>
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<date>$Date$</date>
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</sect1info>
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<?dbhtml filename="sysstat.html"?>
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<title>Sysstat-&sysstat-version;</title>
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<sect2>
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<title>Introduction to <application>Sysstat</application></title>
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<para>The <application>Sysstat</application> package contains utilities to
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monitor system performance and usage activity.
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<application>Sysstat</application> contains the <command>sar</command> utility,
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common to many commercial Unixes, and tools you can schedule via cron to
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collect and historize performance and activity data.</para>
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<sect3><title>Package information</title>
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<itemizedlist spacing='compact'>
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<listitem><para>Download (HTTP): <ulink url="&sysstat-download-http;"/></para></listitem>
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<listitem><para>Download (FTP): <ulink url="&sysstat-download-ftp;"/></para></listitem>
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<listitem><para>Download size: &sysstat-size;</para></listitem>
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<listitem><para>Estimated Disk space required: &sysstat-buildsize;</para></listitem>
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<listitem><para>Estimated build time: &sysstat-time;</para></listitem></itemizedlist>
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</sect3>
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<sect3><title><application>Sysstat</application> dependencies</title>
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<sect4><title>Recommended</title>
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<para><xref linkend="fcron"/></para></sect4>
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</sect3>
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</sect2>
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<sect2>
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<title>Installation of <application>Sysstat</application></title>
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<para>Install <application>Sysstat</application> by running the
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following commands:</para>
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<screen><userinput><command>make config &&
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make &&
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make install</command></userinput></screen>
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</sect2>
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<sect2>
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<title>Command explanations</title>
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<para><command>make config</command>: Runs the interactive configuration
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process. The first question prompts you for an "Installation directory".
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Reply with <filename class="directory">/usr</filename>, as this is equivalent
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to <application>Autoconf</application>'s <parameter>--prefix=/usr</parameter>
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parameter to <command>configure</command>. For all other prompts, you may
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press <command>Enter</command> to accept the (very sane) defaults.</para>
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</sect2>
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<sect2>
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<title>Configuring <application>Sysstat</application></title>
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<sect3><title>Cron information</title>
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<para>To begin gathering <application>Sysstat</application> history
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information, you must add to, or create a privileged user's crontab. The
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default history data location is
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<filename class="directory">/var/log/sa</filename>. The user running
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<application>Sysstat</application> utilities via cron must have write
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access to this location.</para>
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<para>Below is an example of what to install in the crontab. Adjust the
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parameters to suit your needs. Use <command>man sa1</command> and
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<command>man sa2</command> for information about the commands.</para>
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<screen><userinput># 8am-7pm activity reports every 10 minutes during weekdays
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0 8-18 * * 1-5 /usr/lib/sa/sa1 600 6 &
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# 7pm-8am activity reports every hour during weekdays
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0 19-7 * * 1-5 /usr/lib/sa/sa1 &
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# Activity reports every hour on Saturday and Sunday
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0 * * * 0,6 /usr/lib/sa/sa1 &
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# Daily summary prepared at 19:05
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5 19 * * * /usr/lib/sa/sa2 -A &</userinput></screen>
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<para>Ensure you submit the revised crontab to the cron daemon.</para>
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</sect3>
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<sect3><title>System startup information</title>
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<para>At system startup, a LINUX RESTART message must be inserted in the daily
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data file to reinitialize the kernel counters. This can be automated by
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installing the <filename>/etc/rc.d/init.d/sysstat</filename> init script
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included in the <xref linkend="intro-important-bootscripts"/> package using
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the following command:</para>
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<screen><userinput><command>make install-sysstat</command></userinput></screen>
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</sect3>
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</sect2>
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<sect2>
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<title>Contents</title>
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<para>The <application>Sysstat</application> package contains
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<command>iostat</command>,
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<command>mpstat</command>,
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<command>sar</command>,
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<filename>sa1</filename>,
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<filename>sa2</filename> and
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<filename>sadc</filename>.</para>
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</sect2>
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<sect2><title>Description</title>
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<sect3><title>iostat</title>
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<para><command>iostat</command> reports <acronym>CPU</acronym> statistics and
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input/output statistics for devices and partitions.</para></sect3>
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<sect3><title>mpstat</title>
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<para><command>mpstat</command> reports individual or combined processor
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related statistics.</para></sect3>
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<sect3><title>sar</title>
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<para><command>sar</command> collects, reports and saves system activity
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information.</para></sect3>
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<sect3><title>sa1</title>
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<para><filename>sa1</filename> collects and stores binary data in the system
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activity daily data file. It is a front end to <filename>sadc</filename>
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designed to be run from cron.</para></sect3>
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<sect3><title>sa2</title>
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<para><filename>sa2</filename> writes a summarized daily activity report. It
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is a front end to <command>sar</command> designed to be run from
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cron.</para></sect3>
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<sect3><title>sadc</title>
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<para><filename>sadc</filename> is the system activity data collector, used as
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a backend for <command>sar</command>.</para></sect3>
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</sect2>
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</sect1>
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