systemHelper.setSystemCpuCheckInterval(0L);
        systemHelper.calibrateCpuLoad();
        assertEquals(0, systemHelper.waitingThreadNames.size());
        systemHelper.waitForNoWaitingThreads();
    }

    public void test_getVersion() {
        assertEquals("98.76.5", systemHelper.getVersion());
        assertEquals(98, systemHelper.getMajorVersion());

                        ThreadUtil.sleep(interval); // 10 sec (default)
                    }

                    systemHelper.calibrateCpuLoad();
                    systemHelper.waitForNoWaitingThreads();

                    intervalControlHelper.delayByRules();

                    if (logger.isDebugEnabled()) {
                        logger.debug("Processing documents in IndexUpdater queue.");

                current = getSystemCpuPercent();
            }
        } finally {
            waitingThreadNames.remove(threadName);
        }
        return true;
    }

    public void waitForNoWaitingThreads() {
        int count = waitingThreadNames.size();
        while (count > 0) {
            if (logger.isInfoEnabled()) {
                logger.info("{} waiting thread(s).", count);
            }