通过实验分析了各内存拷贝函数拷贝速度与拷贝内存量之间的对应关系。
An experiment is conducted to analyze the relations between the velocity of every memory copy function and the size of memory to be copied.
使用DMA方式进行数据传输可以占用较少的CPU资源，同时获得较快的系统的响应速度和数据拷贝速率。
Transferring data using DMA will occupy less CPU resource, synchronously obtain higher response speed of the system and higher copying speed.
这是一个复杂的系统，上面的数据被拷贝到多台中间设备，通常这是为了在有数以百万的人们试图同时要获得服务的情况下提高文件读取速度。
It's a complex system wherein data is copied to multiple intermediate devices, usually to speed up access to files when millions of people are trying to access the service simultaneously. Yahoo!
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