A named numeric vector with three elements 1min, 5min, and 15min with non-negative values. These values represent estimates of the CPU load during the last minute, the last five minutes, and the last fifteen minutes [1]. An idle system have values close to zero, and a heavily loaded system have values near parallel::detectCores(). If they are unknown, missing values are returned.
Details
This function works only Unix-like system with /proc/loadavg .