Timesharing Policy

The following parameter is specified in the TS loadable module, which controls the timesharing policy:

• ts_maxupri

  ts_maxupri specifies the range within which users may adjust the priority of a timesharing process, using the priocntl(l) command or the priocntl(2) system call. The valid range for the user-supplied priority in the timesharing class is from +ts_maxupri to -ts_maxupri. The default value of ts_maxupri is 20 (which sets the range between +20 and -20, emulating the behavior of the older, less general scheduler interfaces, nice and setpriority.)

  The value of ts_maxupri is independent of the configured number of global timesharing priorities. In the default configuration, there are 0-59 timesharing priorities, but users may adjust their priorities only within a range of -20 to +20, relative to the system-calculated priority of the process. See "How to Designate a Process Priority" for more information.

  To change the value of this parameter, enter a line in /etc/system with the format:

  set TS:ts_maxupri=value