Invention Grant
US08825956B2 Demoting tracks from a first cache to a second cache by using a stride number ordering of strides in the second cache to consolidate strides in the second cache
有权
通过使用第二高速缓存中的步幅数量排序来将跟踪从第一高速缓存降级到第二高速缓存以整合第二高速缓存中的步幅
- Patent Title: Demoting tracks from a first cache to a second cache by using a stride number ordering of strides in the second cache to consolidate strides in the second cache
- Patent Title (中): 通过使用第二高速缓存中的步幅数量排序来将跟踪从第一高速缓存降级到第二高速缓存以整合第二高速缓存中的步幅
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Application No.: US13779412Application Date: 2013-02-27
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Publication No.: US08825956B2Publication Date: 2014-09-02
- Inventor: Michael T. Benhase , Lokesh M. Gupta
- Applicant: Michael T. Benhase , Lokesh M. Gupta
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Konrad Raynes Davda & Victor LLP
- Agent David W. Victor
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F13/28
Abstract:
Information on strides configured in the second cache includes information indicating a number of valid tracks in the strides, wherein a stride has at least one of valid tracks and free tracks not including valid data. A determination is made of tracks to demote from the first cache. A first stride is formed including the determined tracks to demote. The tracks from the first stride are added to a second stride in the second cache that has no valid tracks. A target stride in the second cache is selected based on a stride most recently used to consolidate strides from at least two strides into one stride. Data from the valid tracks is copied from at least two source strides in the second cache to the target stride.
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