| 摘要 |
<p>The main storage (10-4) of a system (10) includes a virtual memory space (10-10) containing a plurality of virtual frame buffers (10-200) for storing information transferred from disk storage (10-6) shared by a number of virtual processes being executed by the system. An associated buffer table and aging mechanism (10-100) includes a buffer table storing a plurality of buffer table entries associated with the corresponding number of virtual buffers used for controlling access thereto and an age table containing entries associated with the buffer table entries containing forward and backward age pointers linked together defining the relative aging of the virtual frame buffers from the most recently used to least recently used. Each buffer table entry has a frequency reference counter which maintains a reference count defining the number of times that is associated virtual buffer has been uniquely accessed by the virtual processes.</p> |
