@Override
    public void setLogDir(String logDir) {
        this.logDir = logDir;
        auditor.setLogDir(logDir);
        JiveGlobals.setProperty("xmpp.audit.logdir", logDir);
    }
the time between successive executions of the task that will save
the queued audited packets to a permanent store.
xmppserver/src/main/java/org/jivesoftware/openfire/audit/spi/AuditManagerImpl.java