用户线程与核心线程

ref: Scheduler Activations: Effective Kernel Support for the User-Level Management of Parallelism

论文观点:

1. We argue that the performance of user-levelthreads is inherently better than that of kernel threads, rather than thisbeing an artifact of existing implementations.
2. kernel threads are the wrong abstraction on which to support user-level management of parallelism.

1.用户线程的优势

1. The cost of accessing thread management operations.