NovAtel's novel approach to CPU usage measurement

摘要

AbstractThis paper describes a set of CPU usage analysis tools, named CPU Probes, with the benefits of both hardware and software tools, and few of their disadvantages. CPU probes use a serial line unit or programmable interval timer as a clock to sample the CPU usage of a system, resulting in fast and accurate CPU usage estimates. CPU usage can be monitored for all processes simultaneously or as little as a single machine instruction. CPU probes are well suited for monitoring real‐time system performance. These tools have been implemented on PDP‐11/RSX and UNIX System V/386 syst