cpuNice:           "CPU nice time",
		cpuLoad1:          "CPU load average 1min",
		cpuLoad5:          "CPU load average 5min",
		cpuLoad15:         "CPU load average 15min",
		cpuLoad1Perc:      "CPU load average 1min (percentage)",
		cpuLoad5Perc:      "CPU load average 5min (percentage)",
		cpuLoad15Perc:     "CPU load average 15min (percentage)",
	}
	resourceMetricsGroups = []*MetricsGroupV2{
		getResourceMetrics(),

    /** Connection check interval in seconds */
    protected int connectionCheckInterval = 5; // sec

    /** Idle connection timeout in milliseconds */
    protected long idleConnectionTimeout = 60 * 1000L; // 1min

    /** Pattern for matching HTTP redirect status codes */
    protected Pattern redirectHttpStatusPattern = Pattern.compile("[3][0-9][0-9]");

    /** Whether to use robots.txt disallow rules */