@Override
    public void setAuditPresence(boolean auditPresence) {
        this.auditPresence = auditPresence;
        JiveGlobals.setProperty("xmpp.audit.presence", auditPresence ? "true" : "false");
    }
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