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6.1.2 Operating System
6.1.2.2 sched
SunOS 5.X uses the real-time scheduler, sched, which is started as process 0. This can be used to set priority for real-time processes so that they can be given "immediate" access to the kernel. The latency time on a SparcStation 2 is less than 1 millisecond on a lightly used machine and a maximum of 2 milliseconds with an arbitrary number of processes running.
Unix System Administration - 8 AUG 1996
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