Timesharing Scheduler (TS)

The timesharing scheduler tries to provide every process relatively equal access to the available CPUs, allocating CPU time based on priority. Because the TS does not need to be administered, it is easy to use. However, the TS cannot guarantee performance to a specific application. You should use TS if CPU allocation is not required.

For example, if two projects are assigned to an FSS resource pool and they each have two shares, the number of processes that are running in those projects is irrelevant. A project can only access 50 percent of the available CPU. Thus, if one process is running the sales project and 99 processes are running in the marketing project, the one process in the sales project can access 50 percent of the CPU. The 99 processes in the marketing project must share 50 percent of the available CPU resources.

In a TS resource pool, the CPU is allocated per process. The one process in the sales project has access to only 1 percent of the CPU, while the 99 processes in the marketing project have access to 99 percent of the available CPU resources.

For more information about the fair share scheduler or the timesharing scheduler, see System Administration Guide: Network Services.