公开(公告)号：US09524244B2

公开(公告)日：2016-12-20

申请号：US14507234

申请日：2014-10-06

Applicant: GLOBALFOUNDRIES Inc.

Inventor： Ian Boden ,  Geraint North ,  Lee J. Sanders ,  David Sherwood

IPC: G06F12/00 ,  G06F12/08 ,  G06F3/06

CPC classification number: G06F12/0868 ,  G06F3/0659 ,  G06F12/0804 ,  G06F12/0806 ,  G06F2212/283

Abstract: Disclosed is a system for controlling write actions to a plurality of data storage devices, the system comprising a plurality of write caches, wherein each cache is associated with a set of said data storage devices; and a controller adapted to issue write permissions to said data storage devices, said write permissions including a permission to perform a data destage operation from a cache to a data storage device; wherein each cache has a first performance score expressed as the difference between the number of data destage operations said cache has in flight and the maximum number of data destage actions said cache is permitted to issue in parallel; and wherein the controller is adapted to offer a data destage operation permission to the cache in said plurality of caches associated with the highest first performance score.

Abstract translation: 公开了一种用于控制对多个数据存储设备的写入动作的系统，该系统包括多个写高速缓存，其中每个高速缓存与一组所述数据存储设备相关联; 以及适于向所述数据存储设备发出写入权限的控制器，所述写许可包括从高速缓存执行到数据存储设备的数据去往操作的许可; 其中每个高速缓存具有表示为所述高速缓存在飞行中的数据去往操作的数目与所述高速缓存允许并发发布的数据去往动作的最大数量之间的差的第一性能得分; 并且其中所述控制器适于向与所述最高第一性能得分相关联的所述多个高速缓存中的所述高速缓存提供数据去往操作许可。