<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<body link="#355491" alink="#4262a1" vlink="#355491" style="background: #e2e2e2; margin: 0; padding: 20px;">
<div>
<table cellpadding="0" bgcolor="#FFFFFF" border="0" cellspacing="0" style="border: 1px solid #dadada; margin-bottom: 30px; width: 100%; -moz-border-radius: 6px; -webkit-border-radius: 6px;">
<tbody>
<tr>
<td>
<table border="0" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF" style="border: solid 2px #ccc; background: #dadada; width: 100%; -moz-border-radius: 6px; -webkit-border-radius: 6px;">
<tbody>
<tr>
<td bgcolor="#000000" valign="middle" height="58px" style="border-bottom: 1px solid #ccc; padding: 20px; -moz-border-radius-topleft: 3px; -moz-border-radius-topright: 3px; -webkit-border-top-right-radius: 5px; -webkit-border-top-left-radius: 5px;">
<h1 style="color: #333333; font: bold 22px Arial, Helvetica, sans-serif; margin: 0; display: block !important;">
<!-- To have a header image/logo replace the name below with your img tag -->
<!-- Email clients will render the images when the message is read so any image -->
<!-- must be made available on a public server, so that all recipients can load the image. -->
<a href="http://community.jboss.org/index.jspa" style="text-decoration: none; color: #E1E1E1">JBoss Community</a></h1>
</td>
</tr>
<tr>
<td bgcolor="#FFFFFF" style="font: normal 12px Arial, Helvetica, sans-serif; color:#333333; padding: 20px; -moz-border-radius-bottomleft: 4px; -moz-border-radius-bottomright: 4px; -webkit-border-bottom-right-radius: 5px; -webkit-border-bottom-left-radius: 5px;"><h3 style="margin: 10px 0 5px; font-size: 17px; font-weight: normal;">
ajp thread takes more cpu time?
</h3>
<span style="margin-bottom: 10px;">
created by <a href="http://community.jboss.org/people/jaganmohacgg">jaganmohan madire</a> in <i>Performance Tuning</i> - <a href="http://community.jboss.org/message/586879#586879">View the full discussion</a>
</span>
<hr style="margin: 20px 0; border: none; background-color: #dadada; height: 1px;">
<div class="jive-rendered-content"><p>Hi,</p><p>We are facing some issue while doing performance testing for our application.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>We have 500 different users using 500 different customer names for searching and viewing the details.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"><span style="font-family: 'Calibri','sans-serif'; font-size: 11pt;"> </span> </p><p><span style="color: #ff0000;"><strong>The problem we are facing is with the AjpProcessor.read(Socket...) taking lot of CPU time.</strong></span></p><p><a href="http://community.jboss.org/servlet/JiveServlet/showImage/2-586879-11334/ajp.read_issue%28%29.JPG"><span> http://community.jboss.org/servlet/JiveServlet/downloadImage/2-586879-11334/450-41/ajp.read_issue%28%29.JPG </span></a></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Attached is the javacore/dump if needed.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"><span style="font-family: 'Calibri','sans-serif'; font-size: 11pt;"> </span> </p><p><span style="font-family: 'Calibri','sans-serif'; font-size: 11pt;">We have the below parameter after going thru various performance link on the community and sites.</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"><span style="font-family: 'Calibri','sans-serif'; font-size: 10pt;"> </span> </p><p><span style="font-family: 'Calibri','sans-serif'; font-size: 10pt;"> </span>So far, We changed the following parameters from default values at various levels:</p><table border="0" cellpadding="0" cellspacing="0" style="margin-left: -1.15pt;" width="327"><tbody><tr><td nowrap="nowrap" style="padding-left: 5.4pt; padding-right: 5.4pt; border: windowtext 1pt solid;;padding-left: 5.4pt; padding-right: 5.4pt; border: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">Jboss</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="color: black;"><max-pool-size></span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: windowtext 1pt solid; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p align="right"><span style="color: black;">100</span></p></td></tr><tr><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">Jboss</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="font-family: 'Arial Unicode MS','sans-serif'; color: black; font-size: 10pt;">maxThreads(AJP)</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p align="right"><span style="color: black;">500</span></p></td></tr><tr><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">Jboss</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="font-family: 'Arial Unicode MS','sans-serif'; color: black; font-size: 10pt;">enableLookups(AJP)</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p align="right"><span style="color: black;">FALSE</span></p></td></tr><tr><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">Jboss</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="font-family: 'Arial Unicode MS','sans-serif'; color: black; font-size: 10pt;">enableSessionPath(AJP)</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p align="right"><span style="color: black;">TRUE</span></p></td></tr><tr><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">Apache </span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="font-family: 'Arial','sans-serif'; color: black; font-size: 10pt;">ServerLimit(prefork.c)</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p align="right"><span style="color: black;">1000</span></p></td></tr><tr><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">Apache </span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="font-family: 'Arial','sans-serif'; color: black; font-size: 10pt;">MaxClients(prefork.c)      </span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p align="right"><span style="color: black;">1000</span></p></td></tr><tr><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">Apache </span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="font-family: 'Arial','sans-serif'; color: black; font-size: 10pt;">MaxClients(worker.c)      </span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p align="right"><span style="color: black;">1000</span></p></td></tr><tr><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">Oracle</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="font-family: 'Arial','sans-serif'; color: black; font-size: 10pt;">SGA</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p align="right"><span style="color: black;">8 GB</span></p></td></tr><tr><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">Oracle </span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="font-family: 'Arial','sans-serif'; color: black; font-size: 10pt;">Number of Processess</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p align="right"><span style="color: black;">1000</span></p></td></tr><tr><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">Oracle</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="font-family: 'Arial','sans-serif'; color: black; font-size: 10pt;">PGA</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p align="right"><span style="color: black;">1 GB</span></p></td></tr><tr><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">OS(Linux)</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="font-family: 'Arial Unicode MS','sans-serif'; color: black; font-size: 10pt;">fs.file-max</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p align="right"><span style="color: black;">1000000</span></p></td></tr><tr><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">LDAP</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="199"><p><span style="font-family: 'Arial','sans-serif'; color: black; font-size: 10pt;">sizelimit</span></p></td><td nowrap="nowrap" style="border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;;border-bottom: windowtext 1pt solid; border-left: medium none; padding-left: 5.4pt; padding-right: 5.4pt; border-top: medium none; border-right: windowtext 1pt solid;" valign="bottom" width="64"><p><span style="color: black;">unlimited</span></p></td></tr></tbody></table><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>let us know if we have any more changes or additions to the above table at any level.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Any body encountered/faced this issue earlier, please let us know.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks in advance,</p><p>Jagan. </p></div>
<div style="background-color: #f4f4f4; padding: 10px; margin-top: 20px;">
<p style="margin: 0;">Reply to this message by <a href="http://community.jboss.org/message/586879#586879">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in Performance Tuning at <a href="http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2078">Community</a></p>
</div></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</div>
</body>
</html>