核心级线程如许不同进程里的线程按照同一相对优先方法调度，这适合于发挥多处理器的并发优点。
This implementation allows threads within different processes to be scheduled according to a single scheme of relative prioritizing. This is suited for exploiting the concurrence of multiprocessors.
如果需要设置此条件的线程具有较低的优先级，那么它可能始终不能访问核心来设置条件。
If the thread that needs to set that condition has a lower priority, then it may never be able to get access to a core to set the condition.
Linux核心可以根据静态控制(如线程优先级级别)和系统中执行的线程的某些动态条件下来执行线程调度。
The Linux kernel performs thread scheduling based on static controls, such as thread priority levels, and on certain dynamic conditions of the threads executing in the system.
调整优先级和线程核心亲和力。
用户级线程是在核心线程的支持下建立的更高层次的用户调度单位，能较好地支持用户程序的并发执行。
User level thread is the higher level user scheduling unit supported by kernel thread, it supports concurrent execution of user programs.
用户级线程是在核心线程的支持下建立的更高层次的用户调度单位，能较好地支持用户程序的并发执行。
User level thread is the higher level user scheduling unit supported by kernel thread, it supports concurrent execution of user programs.
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