SYSCTLNAME_CPTIME
if (sysctlbyname(SYSCTLNAME_CPTIME, &cp_time_start, &size, NULL, 0)
err(-1, "sysctlbyname: %s", SYSCTLNAME_CPTIME);
if (sysctlbyname(SYSCTLNAME_CPTIME, &cp_time_finish, &size, NULL, 0)
err(-1, "sysctlbyname: %s", SYSCTLNAME_CPTIME);
if (sysctlbyname(SYSCTLNAME_CPTIME, &cp_time_last, &size,
err(-1, "sysctlbyname: %s", SYSCTLNAME_CPTIME);
if (sysctlbyname(SYSCTLNAME_CPTIME, &cp_time_now,
SYSCTLNAME_CPTIME);