[]MetricDescriptor{
			memTotalMD,
			memUsedMD,
			memFreeMD,
			memAvailableMD,
			memBuffersMD,
			memCacheMD,
			memSharedMD,
			memUsedPercMD,
		},
		loadMemoryMetrics,
	)

	systemCPUMG := NewMetricsGroup(systemCPUCollectorPath,
		[]MetricDescriptor{
			sysCPUAvgIdleMD,
			sysCPUAvgIOWaitMD,
			sysCPULoadMD,
			sysCPULoadPercMD,
			sysCPUNiceMD,