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+<!--$Id: logalloc.so,v 1.1 2000/06/02 23:32:48 bostic Exp $-->
+<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.-->
+<!--All rights reserved.-->
+<html>
+<head>
+<title>Berkeley DB Reference Guide: Release 3.1: log file pre-allocation</title>
+<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
+<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++">
+</head>
+<body bgcolor=white>
+<table><tr valign=top>
+<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Upgrading Berkeley DB Applications</dl></h3></td>
+<td width="1%"><a href="../../ref/upgrade.3.1/tmp.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../ref/toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/upgrade.3.1/disk.html"><img src="../../images/next.gif" alt="Next"></a>
+</td></tr></table>
+<p>
+<h1 align=center>Release 3.1: log file pre-allocation</h1>
+<p>This change only affects Win/32 applications.
+<p>On Win/32 platforms Berkeley DB no longer pre-allocates log files. The problem
+was a noticeable performance spike as each log file was created. To turn
+this feature back on, search for the flag DB_OSO_LOG in the source file
+<b>log/log_put.c</b> and make the change described there, or contact
+Sleepycat Software for assistance.
+<table><tr><td><br></td><td width="1%"><a href="../../ref/upgrade.3.1/tmp.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../ref/toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/upgrade.3.1/disk.html"><img src="../../images/next.gif" alt="Next"></a>
+</td></tr></table>
+<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font>
+</body>
+</html>