The Page Replacement Algorithm of Diagnosis Function

With the dynamic page management process,when physical memory has no free pages,page replacement algorithm need to replace the current page in memory and the current visited page.A good replacement algorithm should fully take into account the page fault rate for the entire access sequence,and whether it will happen Belady(abnormal) phenomena.The article discussed how to use the replacement algorithm adding diagnostic functions for page,the experiment proved that the diagnostic functions of the replacement algorithm,the page fault rate will be higher than traditional replacement algorithm,and reduce the Belady phenomena.