* that can specify different delays for different time periods and days.
 */
public class IntervalControlHelper {

    /** Flag indicating whether the crawler is currently running */
    protected volatile boolean crawlerRunning = true;

    /**
     * Default constructor.
     */
    public IntervalControlHelper() {
        // Default constructor
    }

                logger.debug("Failed to calibrate CPU load", e);
            }
        }

        try {
            final IntervalControlHelper intervalControlHelper = ComponentUtil.getIntervalControlHelper();
            intervalControlHelper.checkCrawlerStatus();
            intervalControlHelper.delayByRules();
        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {

        }
        final long unprocessedDocumentSize = fessConfig.getIndexerUnprocessedDocumentSizeAsInteger().longValue();
        final IntervalControlHelper intervalControlHelper = ComponentUtil.getIntervalControlHelper();
        if (totalHits > unprocessedDocumentSize && intervalControlHelper.isCrawlerRunning()) {
            if (logger.isInfoEnabled()) {