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    • 1. 发明授权
    • Auxiliary storage slot scavenger
    • 辅助存储槽清道夫
    • US06829693B2
    • 2004-12-07
    • US09795426
    • 2001-02-28
    • Greg A. DyckHarris M. MorgensternDanny R. SutherlandWendy L. Wang
    • Greg A. DyckHarris M. MorgensternDanny R. SutherlandWendy L. Wang
    • G06F1200
    • G06F12/08G06F12/12
    • In a computing system implementing a virtual memory system having real memory storage frames for storing virtual pages of data and an auxiliary storage system comprising auxiliary storage slots for storing copies of corresponding virtual pages provided in real storage frames, a system and method for freeing auxiliary storage slots to enable further copying of pages thereto. The method comprising the steps of: a) traversing a queue of page frame table entries indicating presence and location of virtual page data in the real storage system; b) determining from the real storage frame backing a page whether the page has been changed in the real storage, and in response, determining whether the page is backed in a corresponding slot in auxiliary storage; c) identifying the auxiliary slot corresponding to the changed frame; and, b) removing the virtual page in said corresponding slot in said auxiliary storage, wherein further room is made available in said auxiliary storage for accommodating storage of other virtual page entries.
    • 在实现具有用于存储数据的虚拟页面的真实存储器存储帧的虚拟存储器系统的计算系统和包括用于存储在真实存储帧中提供的相应虚拟页面的副本的辅助存储槽的辅助存储系统的系统和方法中, 插槽可以进一步复制页面。 该方法包括以下步骤:a)遍历指示真实存储系统中虚拟页面数据的存在和位置的页面帧表项的队列; b)从真实存储帧中确定背景页面是否在真实存储器中改变了页面,并且作为响应,确定页面是否被支持在辅助存储器中的对应的时隙中; c)识别对应于改变的帧的辅助槽; 以及b)去除所述辅助存储器中所述相应时隙中的虚拟页面,其中在所述辅助存储器中可用的空间用于容纳其他虚拟页面条目的存储。