NICE(II) 8/5/73 NICE(II) NAME nice - set program priority SYNOPSIS (nice = 34.) (priority in r0) sys nice nice(priority) DESCRIPTION The scheduling priority of the process is changed to the argument. Positive priorities get less service than normal; 0 is default. Only the super-user may specify a negative priority. The valid range of priority is 20 to -220. The value of 4 is recommended to users who wish to execute long-running programs without flak from the administration. The effect of this call is passed to a child process by the fork system call. The effect can be cancelled by another call to nice with a priority of 0. The actual running priority of a process is the priority argument plus a number that ranges from 100 to 119 depending on the cpu usage of the process. SEE ALSO nice (I) DIAGNOSTICS The error bit (c-bit) is set if the user requests a priority outside the range of 0 to 20 and is not the super-user.