5.7. Coordination Data Structures and Threading Enhancements
In .NET 4.0, the thread pool has been enhanced, and a number of new synchronization classes have been introduced.
5.7.1. Thread Pool Enhancements
Creating many threads to perform small amounts of work can actually end up taking longer than performing the work on a single thread. This is due to time slicing and the overhead involved in locking, and adding and removing items to the thread pools queue.
Previously, the queue of work in the thread pool was held in a linked list structure and utilized a monitor lock. Microsoft improved this by changing to a data structure that is lock-free and involves the garbage collector (GC) doing less work. Microsoft says that this new structure is ...
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