Thread Pools
Creation of new threads is a fairly expensive operation. The reason for this goes all the way down to the operating system tasks that have to be performed to make the creation of a new thread happen. This includes the allocation of the thread’s stack and various data structures (such as KTHREAD at the kernel mode level) to maintain the thread’s state. Also, the thread needs to become eligible for scheduling, requiring the scheduler database to be updated to gain knowledge about the thread’s existence.
Note: Kernel Mode Versus User Mode
Threads are the unit of code execution on the Windows operating system. This means that threads get scheduled and can deal with synchronization. Because the concept of preemptive scheduling requires ...
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