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C6678代码执行时间测定



运行平台:C6678评估板

连接仿真器下载程序运行

测试代码:

unsigned long long stime,etime,rtime;

TSCH=0;

TSCL=0;

设置断点1

stime = _itoll(TSCH,TSCL);

被测代码段

etime = _itoll(TSCH,TSCL);

rtime = (etime - stime)/10^9;

设置断点2

测试出代码执行时间rtime=101秒,但两个断点之间的运行时间却远不止101秒,通过查看windows时间,两个断点间运行了大概17分钟,想弄清楚为什么rtime得出的值和两个断点间运行的windows时间不一致呢?