Telemetria handy wrapper around :telemetry became even more friendly. Here is the changelog. https://hexdocs.pm/telemetria

• `0.5.0` —
  • [ENH] annotation @telemetria true as a synonym to deft/2
  • [FIX] polling is off by default
  • [ENH] default polling of system / vm states for free
  • [ENH] starting in phases ensuring proper instrumenter setup
  • [ENH] no need for any config in any environment
  • [BUG] proper handling of guards in compiler, correct event names