When the thread completes its running slice on the CPU, it gets put back on the queue.
当线程在CPU上的时间片结束之后，它将被重新放回到这个队列中。
2
UNIX runs many tasks seemingly at the same time because each process receives a little slice of CPU time in a (conceptually) round-robin fashion.
UNIX似乎能同时运行很多任务，这是因为每个进程都会轮流(从概念上来讲)分到一小片CPU时间。
3
Logical partitioning (LPAR) is the ability to logically slice up a single system's CPU, memory, and other resources to create multiple and separate servers.