_THROUGH flag).  This flag may
                 result in inaccurate file modification times and other file-level
                 information for Berkeley DB log files.  This flag may offer a
                 performance increase on some systems and a performance decrease on
                 others.
            </p>
                <p>
                 Calling <code class="methodname">DbEnv::log_set_config()</code> with the DB_LOG_DSYNC flag only
                 affects the specified <a class="link" href=