52 lines
3.4 KiB
HTML
52 lines
3.4 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">
|
||
|
|
<LINK rel="stylesheet" type="text/css" href="../../../rzahg/ic.css">
|
||
|
|
|
||
|
|
<title>Performance guidelines</title>
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<BODY>
|
||
|
|
<!-- Java sync-link -->
|
||
|
|
<SCRIPT LANGUAGE="Javascript" SRC="../../../rzahg/synch.js" TYPE="text/javascript"></SCRIPT>
|
||
|
|
|
||
|
|
<h4><a name="prfguide"></a>Performance guidelines</h4>
|
||
|
|
|
||
|
|
<p>This page provides basic guidelines that can help you ensure optimal performance.</p>
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li>Verify that you have enough system capacity. For more information, see <a href="../install/inprrq.htm">Prerequisites for installing and running WebSphere Application Server - Express V5.0 for iSeries</a> in the <em>Installation</em> topic. You can also use the <a href="http://www-912.ibm.com/supporthome.nsf/document/16533356" target="_blank">IBM eServer Workload Estimator</a> or obtain professional services. <img src="www.gif" width="18" height="15" align="absbottom" alt="Link outside Information Center" border="0"><p></p></li>
|
||
|
|
|
||
|
|
<li>Verify that hardware resources are allocated efficiently.
|
||
|
|
<ul>
|
||
|
|
<li>Provide sufficient memory and activity level in the *BASE memory pool.</li>
|
||
|
|
<li>If availability and performance are high priorities, it is recommended that you allocate WebSphere Application Server - Express processing to a separate storage pool.</li>
|
||
|
|
</ul>
|
||
|
|
<p>You can adjust memory pools manually or automatically.
|
||
|
|
</p></li>
|
||
|
|
|
||
|
|
<li><p>Verify that you have the latest WebSphere Application Server - Express Group PTF. For information about PTFs and to download the most recent Group PTF, see <a href="http://www-1.ibm.com/servers/eserver/iseries/software/websphere/wsappserver/services/service.htm" target="_blank"> WebSphere Application Server for iSeries: PTFs</a>. <img src="www.gif" width="18" height="15" align="absbottom" alt="Link outside Information Center" border="0"></p></li>
|
||
|
|
|
||
|
|
<li><p>Tune the JVM garbage collector. For information about garbage collection, see <a href="prfref.htm#ja">Performance resources</a>.</p></li>
|
||
|
|
|
||
|
|
<li>Configure queues for your application server components. See these topics for more information:
|
||
|
|
<ul>
|
||
|
|
<li><a href="prftuneqnet.htm">Queuing network</a></li>
|
||
|
|
<li><a href="help/uejb_rthrd.html">Thread pool settings</a> <img src="help.gif" width="18" height="15" align="absbottom" alt="Go to Help documentation"></li>
|
||
|
|
<li><a href="help/udat_conpoolset.html">Connection pool settings</a> <img src="help.gif" width="18" height="15" align="absbottom" alt="Go to Help documentation"></li>
|
||
|
|
</ul><p></p></li>
|
||
|
|
|
||
|
|
<li>If your application server uses public key encryption, use hardware accelerators to improve performance. For information about the hardware accelerators that are available for iSeries, see the appropriate document based on your version of i5/OS:
|
||
|
|
<ul>
|
||
|
|
<li>For V5R2: <a href="http://www-1.ibm.com/servers/eserver/iseries/perfmgmt/pdf/CryptoV5R2.pdf" target="_blank">iSeries Cryptographic Offload Performance Considerations</a> <img src="www.gif" width="18" height="15" align="absbottom" alt="Link outside Information Center" border="0"></li>
|
||
|
|
</ul><p></p></li>
|
||
|
|
|
||
|
|
<li><p>Design applications to optimize performance. <a href="prfref.htm#ja">Performance resources</a> includes links to resources that can help you develop efficient Java applications.</p></li>
|
||
|
|
|
||
|
|
<li><p>Use efficient SQL and JDBC practices to optimize data access.</p></li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|