processFileDescriptorOpenTotal  = "file_descriptor_open_total"
	processSyscallReadTotal         = "syscall_read_total"
	processSyscallWriteTotal        = "syscall_write_total"
	processResidentMemoryBytes      = "resident_memory_bytes"
	processVirtualMemoryBytes       = "virtual_memory_bytes"
	processVirtualMemoryMaxBytes    = "virtual_memory_max_bytes"
)

var (

	// So if the result length is larger than an empirically-found
	// limit (8KB), we stop growing the source string once the limit
	// is reached and keep reusing the same source string - that
	// should therefore be always resident in the L1 cache - until we
	// have completed the construction of the result.
	// This yields significant speedups (up to +100%) in cases where
	// the result length is large (roughly, over L2 cache size).

	ttlbDistribution    = "ttlb_seconds_distribution"

	lastActivityTime = "last_activity_nano_seconds"
	startTime        = "starttime_seconds"
	upTime           = "uptime_seconds"
	memory           = "resident_memory_bytes"
	vmemory          = "virtual_memory_bytes"
	cpu              = "cpu_total_seconds"

	expiryPendingTasks           MetricName = "expiry_pending_tasks"