NICE(2-SysV)        RISC/os Reference Manual         NICE(2-SysV)



NAME
     nice - change priority of a process

SYNOPSIS
     int nice (incr)
     int incr;

DESCRIPTION
     nice adds the value of incr to the nice value of the calling
     process.  A process's nice value is a non-negative number
     for which a more positive value results in lower CPU prior-
     ity.

     A maximum nice value of ((2* NZERO )-1) and a minimum nice
     value of 0 are imposed by the system.  (The default nice
     value is NZERO being set to the corresponding limit.

     [EPERM]             nice will fail and not change the nice
                         value if incr is negative or greater
                         than or equal to 2*NZERO and the effec-
                         tive user ID of the calling process is
                         not super-user.

SEE ALSO
     exec(2).
     nice(1) in the User's Reference Manual.

DIAGNOSTICS
     Upon successful completion, nice returns the new nice value
     minus NZERO. Otherwise, a value of -1 is returned and errno
     is set to indicate the error.
























                         Printed 1/15/91                   Page 1