A snapshot of every monitored soft metric at one instant. Each field is a
Sys.Mon.Server.Reading whose instant/smoothed carry that metric's domain
type - cpu a Float fraction, mem a Unit.Information, disk_bw/net_bw
a Unit.Bandwidth.
Summary
Types
@type t() :: %Sys.Mon.Readings{ cpu: Sys.Mon.Server.Reading.t(), disk_bw: Sys.Mon.Server.Reading.t(), mem: Sys.Mon.Server.Reading.t(), net_bw: Sys.Mon.Server.Reading.t() }