Based on the comparison of existing performance evaluation methods and analysis of the characteristic of scheduling problem in hardware / software codesign , the thesis presents a m system performance evaluation method based on " dynamic critical path first " heterogeneous multiprocessor schedule algorithm . experiments show the schedule algorithm is better than some other scheduling algorithms 在对现有性能评价方法的深入对比研究和对软硬件协同设计中调度问题分析的基础上,本文提出了基于动态关键路径优先调度进行系统层性能评价的方法,实验表明该方法优于其它几种调度算法。