Edit D:\app\Administrator\product\11.2.0\dbhome_1\j2ee\OC4J_EM\applications\em\em\online_help\host\host_cpuusage.html
<!doctype html public "-//w3c//dtd html 4.0 transitional//en"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="topic-id" content="host_cpuusage"> <meta name="GENERATOR" content="Mozilla/4.79 [en] (Windows NT 5.0; U) [Netscape]"> <title>CPU Usage</title> <link rel="stylesheet" href="blafdoc.css" type="text/css"> </head> <body> <!-- category --> <h1> CPU Usage</h1> <h2> Description</h2> The CPU Usage metric provides information about the percentage of time the CPU was in various states, for example, idle state and wait state. The metric also provides information about the percentage of CPU time spent in user and system mode. All data is per-CPU in a multi-CPU system. <p>On HP Tru64, this information is available as the cumulative total for all the CPUs and not for each CPU which is monitored in the Load metric. Hence, this metric is not available on HP Tru64. <p>The data sources for this metric category include the following: <br> <table BORDER CELLSPACING=2 CELLPADDING=2 WIDTH="100%" SUMMARY="This table lists the metric's data sources for each host." > <tr> <td WIDTH="24%" SCOPE="col"><b>Host</b></td> <td WIDTH="76%" SCOPE="col"><b>Data Source</b></td> </tr> <tr> <td WIDTH="24%" SCOPE="row">Solaris</td> <td WIDTH="76%">kernel statistics (class cpu_stat)</td> </tr> <tr> <td WIDTH="24%" SCOPE="row">HP</td> <td WIDTH="76%">pstat_getprocessor() system call</td> </tr> <tr> <td WIDTH="24%" SCOPE="row">Linux</td> <td WIDTH="76%">/proc/stat</td> </tr> <tr> <td WIDTH="24%" SCOPE="row">HP Tru64</td> <td WIDTH="76%">not available</td> </tr> <tr> <td WIDTH="24%" SCOPE="row">IBM AIX</td> <td WIDTH="76%">oracle_kstat() system call</td> </tr> <tr> <td WIDTH="24%" SCOPE="row">Windows</td> <td WIDTH="76%">performance data counters</td> </tr> </table> <p class="zz-legal-notice"><a href="topicid:em_cpyr" class="zz-legal-notice-link">Copyright © 1996, 2009, Oracle.</a> All rights reserved. </body> </html>
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