我在用 philips DSP(Nexperia pnx1300)，基于 psos 上写多任务的程序时，出了点问题 :( 感觉一个线程的执行效率很低，可是我把该 TASK 的优先级调到很高的值时（从原来的 96 改成了217），发现它的执行效率还是没什么变化。。？ 为什么呢？？ A priority must be assigned to each task when it is created. There are 256 priority levels — 255 is the highest, 0 the lowest. Certain priority levels are reserved for use by special pSOSystem tasks. Level 0 is reserved for the IDLE daemon task furnished by the pSOS+ kernel. Levels 230 - 255 are reserved for a variety of high priority tasks, including the pSOS+ ROOT. 请各位大虾指点小弟我一二啊！ thanks ...