/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying * information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Portions Copyright 2006 Sun Microsystems, Inc.
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*/
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/**
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* Contains the implementation of the Directory Server plugin that acts as an
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* embedded profiler that can be used for performance analysis of the server
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* under load. This plugin uses repeated calls to the the
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* <CODE>Thread.getAllStackTraces()</CODE> at regular intervals in order to
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* construct a picture of the particular method calls that seem to take a
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* significant percentage of the Directory Server processing time. This
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* information may be used to help identify potential targets for performance
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* improvement by highlighting which methods are most frequently called.
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* <BR><BR>
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* The profiler is implemented as a Directory Server startup plugin so that it
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* is made available for use at any point while the server is running. However,
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* enabling this plugin only causes it to register with the server as a
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* configurable component that will watch for modifications to the
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* ds-cfg-profileAction attribute. If this attribute is modified to have a
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* value of "start", then the profiler will begin capturing stack trace
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* information until it is modified again with a value of "stop", at which point
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* it will stop profiling and write the captured information to a binary file on
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* the server filesystem, or "cancel", at which point it will stop profiling and
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* discard any information that it had collected.
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* <BR><BR>
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* This package also contains a tool that can be used to view the information
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* in this binary stack trace capture file. The tool may operate in a simple
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* command-line mode as well as a more flexible and potentially more useful GUI
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* mode.
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*/
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package org.opends.server.plugins.profiler;
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