1. Oracle Solaris 11.4 Programming Interfaces Guide
  2. Real-time Programming and Administration
  3. Real-Time Scheduler
  4. Configuring Scheduling
  5. Dispatcher Parameter Table

Dispatcher Parameter Table

The in-core table for real-time establishes the properties for RT scheduling. The rt_dptbl structure consists of an array of parameters, struct rt_dpent_t. Each of the n priority levels has one parameter. The properties of a given priority level are specified by the ith parameter structure in the array, rt_dptbl[i].

A parameter structure consists of the following members, which are also described in the /usr/include/sys/rt.h header file.

rt_globpri

The global scheduling priority associated with this priority level. The rt_globpri values cannot be changed with dispadmin.

rt_quantum

The length of the time quantum allocated to processes at this level in ticks. For more information, see Timestamp Interfaces. The time quantum value is only a default or starting value for processes at a particular level. The time quantum of a real-time process can be changed by using the priocntl command or the priocntl() system call. For more information, see the priocntl(1) and priocntl(2) man pages.