CPUbruk

CPUbruk, or CPU usage, is the proportion of a computer's central processing unit time spent on active work during a defined interval. It combines time spent executing user-level programs and kernel code, and excludes periods when the CPU is idle.

Measurement and interpretation: It is usually expressed as a percentage. The value depends on the sampling interval and on whether it is reported per core or as an average across cores. In multi-core systems, it may reflect the average per core, the total utilization, or both.

Common patterns: High CPUbruk indicates CPU-bound workloads and potential bottlenecks; low CPUbruk with high latency may point to I/O delays or memory contention. Short spikes are common in interactive systems; sustained high values suggest capacity issues or the need for optimization.

Monitoring tools: Linux tools such as top, htop, vmstat, and sar report CPUbruk; Windows provides Task Manager and Performance Monitor; macOS offers Activity Monitor and top. Reports vary in units and update rates.

Limitations: CPUbruk is a simplification that does not measure execution efficiency, parallelism efficiency, memory pressure, or I/O wait. In virtualized or containerized environments, values can be influenced by the host scheduler rather than by a single guest.

See also: CPU utilization, CPU load, CPU scheduling.