CPU - (Metrics|Counter)

About

metrics of a CPU.

All CPU metrics are System metrics.

System Performance counters are CPU hardware registers that count hardware events such as instructions executed and cache-misses suffered.

For CPU performance, see CPU - Performance

Metrics

Task

Idle

The idle task is the task with the absolute lowest priority in a multitasking system. This task is also sometimes called the background task or background loop. This logic traditionally has a while type of loop. In other words, an infinite loop spins the CPU waiting for an indication that critical work needs to be done.

Work

Work may or may not include a plethora of activity, including:

  • floating point and integer computation,
  • register moves,
  • loads,
  • stores,
  • delays waiting for memory accesses and IO’s,
  • etc.

Documentation / Reference


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