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    ADAPTIVE CACHE PROMOTIONS IN A TWO LEVEL CACHING SYSTEM
    8.
    发明申请
    ADAPTIVE CACHE PROMOTIONS IN A TWO LEVEL CACHING SYSTEM 有权
    自适应高速缓存在两级缓存系统中的推广

    公开(公告)号：US20130232294A1

    公开(公告)日：2013-09-05

    申请号：US13412412

    申请日：2012-03-05

    申请人： Michael T. Benhase ,  Stephen L. Blinick ,  Evangelos S. Eleftheriou ,  Lokesh M. Gupta ,  Robert Haas ,  Xiao-Yu Hu ,  Ioannis Koltsidas ,  Roman A. Pletka

    发明人： Michael T. Benhase ,  Stephen L. Blinick ,  Evangelos S. Eleftheriou ,  Lokesh M. Gupta ,  Robert Haas ,  Xiao-Yu Hu ,  Ioannis Koltsidas ,  Roman A. Pletka

    IPC分类号： G06F12/08

    CPC分类号： G06F12/128 ,  G06F12/126

    摘要： Provided are a computer program product, system, and method for managing data in a first cache and a second cache. A reference count is maintained in the second cache for the page when the page is stored in the second cache. It is determined that the page is to be promoted from the second cache to the first cache. In response to determining that the reference count is greater than zero, the page is added to a Least Recently Used (LRU) end of an LRU list in the first cache. In response to determining that the reference count is less than or equal to zero, the page is added to a Most Recently Used (LRU) end of the LRU list in the first cache.

    摘要翻译： 提供了一种用于管理第一高速缓存和第二高速缓存中的数据的计算机程序产品，系统和方法。 当页面存储在第二高速缓存中时，对于页面的第二高速缓存中维护引用计数。 确定页面将被从第二缓存提升到第一高速缓存。 响应于确定参考计数大于零，该页被添加到第一高速缓存中的LRU列表的最近最少使用（LRU）末端。 响应于确定参考计数小于或等于零，该页被添加到第一高速缓存中的LRU列表的最近使用（LRU）端。

    Dynamically adjusted threshold for population of secondary cache
    9.
    发明授权
    Dynamically adjusted threshold for population of secondary cache 有权
    二级缓存人口的动态调整阈值

    公开(公告)号：US08972662B2

    公开(公告)日：2015-03-03

    申请号：US13457290

    申请日：2012-04-26

    申请人： Michael T. Benhase ,  Stephen L. Blinick ,  Evangelos S. Eleftheriou ,  Lokesh M. Gupta ,  Robert Haas ,  Xiao-Yu Hu ,  Ioannis Koltsidas ,  Roman A. Pletka

    发明人： Michael T. Benhase ,  Stephen L. Blinick ,  Evangelos S. Eleftheriou ,  Lokesh M. Gupta ,  Robert Haas ,  Xiao-Yu Hu ,  Ioannis Koltsidas ,  Roman A. Pletka

    IPC分类号： G06F12/08

    CPC分类号： G06F12/0888 ,  G06F12/0866 ,  G06F12/0897 ,  G06F2212/225

    摘要： The population of data to be inserted into secondary data storage cache is controlled by determining a heat metric of candidate data; adjusting a heat metric threshold; rejecting candidate data provided to the secondary data storage cache whose heat metric is less than the threshold; and admitting candidate data whose heat metric is equal to or greater than the heat metric threshold. The adjustment of the heat metric threshold is determined by comparing a reference metric related to hits of data most recently inserted into the secondary data storage cache, to a reference metric related to hits of data most recently evicted from the secondary data storage cache; if the most recently inserted reference metric is greater than the most recently evicted reference metric, decrementing the threshold; and if the most recently inserted reference metric is less than the most recently evicted reference metric, incrementing the threshold.

    摘要翻译： 通过确定候选数据的热度量来控制要插入到辅助数据存储高速缓存中的数据的总数; 调整热量度量阈值; 拒绝提供给热度量小于阈值的次数据存储高速缓存的候选数据; 并且允许其热度量等于或大于热度量阈值的候选数据。 通过将与最近插入次级数据存储高速缓存中的数据的命中相关的参考度量与与次级数据存储高速缓存最近被排出的数据的命中相关的参考度量进行比较来确定热度量阈值的调整; 如果最近插入的参考度量值大于最近被驱逐的参考度量，则递减阈值; 并且如果最近插入的参考度量小于最近驱逐的参考度量，则递增阈值。