October 2000
Intermediate to advanced
704 pages
18h 44m
English
Content preview from Solaris™ Internals: Core Kernel ComponentsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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9.1. Overview
The Solaris kernel scheduler provides a rich set of features and innovations that contribute significantly to the speed and scalability of the operating system. The Solaris kernel is preemptive; that is, the execution of an operating system kernel thread, or user thread, can be preempted if a higher priority thread becomes runnable. This feature minimizes dispatch latency and is a key component to the implementation of the real-time scheduling class. The preemption mechanism is applied across the entire range of system priorities. In general, if a thread of a higher (better) priority than all threads currently executing becomes runnable, a preemption will occur, forcing the executing thread to relinquish the processor so the higher ...
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