对系统的性能计数器信息进行实时读取和监控。-Performance counters on the system information in real-time reading and monitoring.

统计程序在目标平台上的CPI属性，利用intel处理器的performance counter来实现。-Statistical procedures of the CPI on the target platform properties, the use of intel processor performance counter to achieve.

Windows user space fast timer utility, using perfCounter frequency and combination of RDTSC and QueryPerformance