Chapter 10. User Mode Scheduler

To those searching for the truth—not the truth of dogma and darkness but the truth brought by reason, search, examination, and inquiry, discipline is required. For faith, as well intentioned as it may be, must be built on facts, not fiction—faith in fiction is a damnable false hope.

—Thomas Edison[1]

[1] Edison, Thomas. As quoted in The Book Your Church Does Not Want You to Read, ed. Tim C. Leedom. San Diego, CA: The Truth Seeker Company, 1993, p. 4.

Up through version 6.5, SQL Server used Windows' scheduling facilities to schedule worker threads, switch between threads, and generally handle the work of multitasking. This worked reasonably well and allowed SQL Server to leverage Windows' hard-learned lessons regarding ...

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