mirror of
https://github.com/yasuhirokimura/db18
synced 2026-06-08 18:29:23 +00:00
Yasuhiro KIMURA
97 lines
4.2 KiB
HTML
97 lines
4.2 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>New Logging Option</title>
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<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB Installation and Build Guide" />
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<link rel="up" href="upgrade_61_toc.html" title="Chapter 10. Upgrading Berkeley DB 12.1.6.0 applications to Berkeley DB 12.1.6.1" />
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<link rel="prev" href="fcbc_notif.html" title="Failchk Broadcast Notifications" />
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<link rel="next" href="repmgr_prefmas.html" title="Replication Manager Preferred Master Mode" />
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</head>
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 18.1.40</p>
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</div>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">New Logging Option</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="fcbc_notif.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 10. Upgrading Berkeley DB 12.1.6.0 applications to Berkeley DB 12.1.6.1 </th>
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<td width="20%" align="right"> <a accesskey="n" href="repmgr_prefmas.html">Next</a></td>
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</tr>
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</table>
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<hr />
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</div>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="log_nosync"></a>New Logging Option</h2>
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</div>
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</div>
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</div>
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<div class="toc">
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<dl>
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<dt>
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<span class="sect2">
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<a href="log_nosync.html#idm140649572838208">New Parameter Value</a>
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</span>
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</dt>
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</dl>
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</div>
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<p>
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A new logging configuration option has been added which
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does not flush the transaction log from the operating
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system cache to stable storage when a transaction commits
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or the logging system switches log files. This can further
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improve performance when all of the applications in an
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environment use less-than-durable transactions
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(<a href="../api_reference/C/envset_flags.html#envset_flags_DB_TXN_NOSYNC" class="olink">DB_TXN_NOSYNC</a> and <a href="../api_reference/C/envset_flags.html#set_flags_DB_TXN_WRITE_NOSYNC" class="olink">DB_TXN_WRITE_NOSYNC</a>).
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</p>
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<div class="sect2" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h3 class="title"><a id="idm140649572838208"></a>New Parameter Value</h3>
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</div>
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</div>
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</div>
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<div class="itemizedlist">
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<ul type="disc">
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<li><a href="../api_reference/C/envlog_set_config.html#log_set_config_DB_LOG_NOSYNC" class="olink">DB_LOG_NOSYNC</a> — A new
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<code class="literal">flags</code>
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parameter value for the <a href="../api_reference/C/envlog_set_config.html" class="olink">DB_ENV->log_set_config()</a> method.
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</li>
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</ul>
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</div>
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</div>
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</div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="fcbc_notif.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="upgrade_61_toc.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="repmgr_prefmas.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">Failchk Broadcast Notifications </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> Replication Manager Preferred Master
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Mode</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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