final short percent = ComponentUtil.getFessConfig().getAdaptiveLoadControlAsInteger().shortValue();
        if (percent <= 0) {
            return true;
        }
        short current = getSystemCpuPercent();
        if (current < percent) {
            return true;
        }
        final long startTime = getCurrentTimeAsLong();
        final String threadName = Thread.currentThread().getName();
        try {

        append(buf, "total", () -> osProbe.getTotalSwapSpaceSize());
        buf.append('}');
        buf.append("},");
        buf.append("\"cpu\":{");
        append(buf, "percent", () -> osProbe.getSystemCpuPercent());
        final OsStats osStats = osProbe.osStats();
        buf.append("},");
        append(buf, "load_averages", () -> osStats.getCpu().getLoadAverage());
        buf.append("},");
    }

        osMemorySwapSpaceObj.total = osProbe.getTotalSwapSpaceSize();
        final OsCpuObj osCpuObj = new OsCpuObj();
        osObj.cpu = osCpuObj;
        osCpuObj.percent = osProbe.getSystemCpuPercent();
        final OsStats osStats = osProbe.osStats();
        osObj.loadAverages = osStats.getCpu().getLoadAverage();
        return osObj;
    }

    private EngineObj getEngineObj() {

        final boolean result = systemHelper.calibrateCpuLoad(0L);
        assertTrue(result);
    }

    @Test
    public void test_getSystemCpuPercent() {
        final short cpuPercent = systemHelper.getSystemCpuPercent();
        // CPU percent can be -1 if not available or other negative values in test environment
        assertTrue(cpuPercent >= -1);
        assertTrue(cpuPercent <= 100);
    }

    @Test