Locality and Virtual Memory The benefits of virtual memory are attractive but is the scheme practical:(虚存的优点是很具有吸 引力的,但这个方案切实可行吗?) Consider a large process, consisting of a long program plus a number of arrays of data. Over any short period of time, execution may be confined to a small section of the program(e.g, subroutine)and access to perhaps only one or two arrays of data.(考虑由 个很长的程序和许多数据数组组成的大进程,在任何一段 很短的时间内,执行可能会局限在很小的一段程序中(例如 个子程序),并且可能仅仅会访问一个或两个数据数组)Locality and Virtual Memory •The benefits of virtual memory are attractive, but is the scheme practical ?(虚存的优点是很具有吸 引力的，但这个方案切实可行吗？ ) •Consider a large process, consisting of a long program plus a number of arrays of data. Over any short period of time, execution may be confined to a small section of the program (e.g.,subroutine) and access to perhaps only one or two arrays of data. (考虑由 一个很长的程序和许多数据数组组成的大进程，在任何一段 很短的时间内，执行可能会局限在很小的一段程序中（例如 一个子程序），并且可能仅仅会访问一个或两个数据数组)