86 lines
3.0 KiB
HTML
86 lines
3.0 KiB
HTML
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||
|
|
<HTML>
|
||
|
|
<HEAD><META http-equiv="Content-Type" content="text/html; charset=utf-8">
|
||
|
|
<TITLE>Reducing iSeries IPL Time</TITLE>
|
||
|
|
<meta name="Copyright" content="Copyright (c) 2004 by IBM Corporation">
|
||
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
||
|
|
<!-- US Government Users Restricted Rights -->
|
||
|
|
<!-- Use, duplication or disclosure restricted by -->
|
||
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
||
|
|
<LINK rel="stylesheet" type="text/css" href="../rzahg/ic.css">
|
||
|
|
</HEAD>
|
||
|
|
<BODY>
|
||
|
|
<!-- Java sync-link -->
|
||
|
|
<SCRIPT LANGUAGE="Javascript" SRC="../rzahg/synch.js" TYPE="text/javascript"></SCRIPT>
|
||
|
|
|
||
|
|
|
||
|
|
<img height="38" src="mastertitlesmall.gif" width="291" alt="Experience Report">
|
||
|
|
<A
|
||
|
|
NAME="Top_Of_Page"></A>
|
||
|
|
<table width="100%">
|
||
|
|
<td>
|
||
|
|
<A NAME="HDRPARENT"><H2>Reducing iSeries<SUP>(TM)</SUP> IPL Time</H2></A>
|
||
|
|
|
||
|
|
<P> This report describes ways you can control how long it takes to start your
|
||
|
|
iSeries server. The Initial Program Load (IPL) for an iSeries server is made
|
||
|
|
up of three major stages. First the hardware is powered up, second the
|
||
|
|
Licensed Internal Code is initialized, and third the operating system is
|
||
|
|
started. This report focuses on performance aspects of operating system IPLs that
|
||
|
|
change based on how you configure and use your system.
|
||
|
|
|
||
|
|
<P>A normal IPL occurs after the system is powered down with the Power
|
||
|
|
Down System (PWRDWNSYS) command and no jobs have ended abnormally. All other
|
||
|
|
IPLs are abnormal for i5/OS. An abnormal IPL takes longer because of
|
||
|
|
additional recovery and verification needed.
|
||
|
|
Message CPI091D (<i>Previous ending abnormal, reason code &1</i>) is sent
|
||
|
|
to the history log during an abnormal IPL. This message gives the reason
|
||
|
|
why the system end was abnormal. If you cannot use the Power Down System
|
||
|
|
command to end the system, use option <u>7=Delayed power off</u> from the
|
||
|
|
panel or service tools. Avoid using <u>8=Immediate power off</u> or
|
||
|
|
<u>3=IPL restart</u> as they can cause a significantly longer abnormal IPL.
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<P>The following areas have an impact on IPL performance:
|
||
|
|
|
||
|
|
<BLOCKQUOTE>
|
||
|
|
|
||
|
|
<P><STRONG>Jobs</STRONG>
|
||
|
|
<BR>
|
||
|
|
Cleaning up jobs and spooled files. Starting jobs and preparing an runtime environment.
|
||
|
|
|
||
|
|
<P><STRONG>File systems </STRONG>
|
||
|
|
<BR>
|
||
|
|
Recovering database files, journals, and directories. Mounting file
|
||
|
|
systems. ASPs and independent ASPs.
|
||
|
|
|
||
|
|
<P><STRONG>Configuration</STRONG>
|
||
|
|
<BR>
|
||
|
|
Recovering user profiles and libraries. Varying on devices.
|
||
|
|
Setting IPL attributes.</P>
|
||
|
|
|
||
|
|
</BLOCKQUOTE>
|
||
|
|
<P>
|
||
|
|
Following are suggestions that could reduce your IPL time.
|
||
|
|
Some of these suggestions could have an effect on runtime performance
|
||
|
|
or ease of operating your system.
|
||
|
|
</td>
|
||
|
|
<td><img src="icblank.gif" alt="">
|
||
|
|
</td>
|
||
|
|
<td VALIGN=top nowrap="">
|
||
|
|
<FONT SIZE=2>
|
||
|
|
<b>View this report</b><br>
|
||
|
|
<img src="filetype.gif" alt=""><a href="ipla3.pdf" target="_">PDF version</a> (146 KB)<br>(Web only)<p>
|
||
|
|
<b>Author</b><br>
|
||
|
|
Mike Russell<br>
|
||
|
|
<p>
|
||
|
|
<b>Published date</b><br>
|
||
|
|
May 2004<p>
|
||
|
|
</font>
|
||
|
|
|
||
|
|
</td>
|
||
|
|
</table>
|
||
|
|
</BODY>
|
||
|
|
</HTML>
|
||
|
|
|