Managing unmodified tracks maintained in both a first cache and a second cache
    3.
    发明授权
    Managing unmodified tracks maintained in both a first cache and a second cache 有权
    管理在第一缓存和第二高速缓存中维护的未修改轨道

    公开(公告)号:US08700854B2

    公开(公告)日:2014-04-15

    申请号:US13476781

    申请日:2012-05-21

    IPC分类号: G06F12/00

    CPC分类号: G06F12/0897 G06F12/0871

    摘要: Provided are a computer program product, system, and method for managing unmodified tracks maintained in both a first cache and a second cache. The first cache has unmodified tracks in the storage subject to Input/Output (I/O) requests. Unmodified tracks are demoted from the first cache to a second cache. An inclusive list indicates unmodified tracks maintained in both the first cache and a second cache. An exclusive list indicates unmodified tracks maintained in the second cache but not the first cache. The inclusive list and the exclusive list are used to determine whether to promote to the second cache an unmodified track demoted from the first cache.

    摘要翻译: 提供了一种用于管理在第一高速缓存和第二高速缓存中保持的未修改轨道的计算机程序产品,系统和方法。 第一个缓存在存储器中具有未修改的轨道,需要输入/输出(I / O)请求。 未修改的轨道从第一缓存降级到第二缓存。 包含的列表指示在第一高速缓存和第二高速缓存中保持的未修改轨道。 排他列表指示在第二缓存中维护的未修改轨道,但不指示第一缓存。 包含列表和排他列表用于确定是否向第二缓存提升从第一高速缓存降级的未修改轨道。