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1. 发明授权

US4967353A System for periodically reallocating page frames in memory based upon non-usage within a time period or after being allocated 失效
标题翻译：用于在一段时间内或在分配之后基于不使用来周期性地重新分配存储器中的页面帧的系统
公开(公告)号：US4967353A
公开(公告)日：1990-10-30
申请号：US390474
申请日：1989-08-03
申请人： Larry B. Brenner , Paul W. VanLeer
发明人： Larry B. Brenner , Paul W. VanLeer
IPC分类号： G06F12/12
CPC分类号： G06F12/122
摘要： A method for memory management and block paging in a control program that controls the execution of tasks on behalf of a plurality of system computing entities, which selects, transfers blocks of data, such as pages, between storage and memory to maintain in memory only those blocks of data necessary for current system processing requirements. Pages in memory are first identified as not referenced within a preceding time period, for example, since the last examination by a core table scan mechanism, on a system wide basis. Pages so identified are then grouped into blocks of pages used by a computing entity and then transferred to storage for later retrieval as a set when any one of the pages in the set is required by the system. Pages not referenced while resident are made available for paging to memory individually. Block paging achieves a significant reduction in the system overhead associated with memory management, as compared with prior art paging mechanisms. Demand driven systemwide or global least recently used memory management achieves more efficient memory utilization.
摘要翻译：一种用于控制程序中的存储器管理和块寻呼的方法，其控制代表多个系统计算实体的任务执行，所述多个系统计算实体选择在存储器和存储器之间传送诸如页之类的数据块，以仅在存储器中维持那些当前系统处理要求所需的数据块。首先，在系统范围的基础上，在前一时间段内首先将内存中的页面识别为未被引用，例如，由核心表扫描机构进行的最后检查。然后将如此识别的页面分组为计算实体使用的页面块，然后在系统中需要该集合中的任何一个页面时，将其转移到存储以供稍后检索。驻留时使用的页面不可用于分页分页。与现有技术的寻呼机制相比，块寻呼实现了与存储器管理相关联的系统开销的显着降低。需求驱动的全系统或全球最近使用的内存管理实现了更高效的内存利用率。

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