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- .th NICE II 8/5/73
- .sh NAME
- nice \*- set program priority
- .sh SYNOPSIS
- (nice = 34.)
- .br
- (priority in r0)
- .br
- .ft B
- sys nice
- .s3
- nice(priority)
- .ft R
- .sh DESCRIPTION
- The scheduling
- .it 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
- .it 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.
- .s3
- The effect of this call is
- passed to a child process by the
- .it fork
- system call.
- The effect can be cancelled by
- another call to
- .it nice
- with a
- .it priority
- of 0.
- .s3
- The actual running priority of a
- process is the
- .it priority
- argument plus a number that
- ranges from 100 to 119 depending on the
- cpu usage of the process.
- .sh "SEE ALSO"
- nice (I)
- .sh DIAGNOSTICS
- The error bit
- (c-bit)
- is set if the user requests a
- .it priority
- outside the range of 0 to 20
- and is not the super-user.
-