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A soma de todos os PIDs “utime” é o total de utime do sistema?
Para medir o tempo total de CPU de um usuário, estou usando o campo "utime" em /proc/[pid]/stat: utime %lu Amount of time that this process has been scheduled in user mode, measured in clock ticks (divide by sysconf(_SC_CLK_TCK). This includes guest time, guest_time (time spent running a virtual CPU, see …