公开(公告)号：US08825951B2

公开(公告)日：2014-09-02

申请号：US13431479

申请日：2012-03-27

Applicant: Xue D. Gao ,  Chao Guang Li ,  Yang Liu ,  Yi Yang

Inventor： Xue D. Gao ,  Chao Guang Li ,  Yang Liu ,  Yi Yang

IPC: G06F12/00 ,  G06F13/00 ,  G06F13/28

CPC classification number: G06F12/00 ,  G06F11/1451 ,  G06F12/0866 ,  G06F12/121 ,  G06F2212/217

Abstract: A mechanism is provided for managing a high speed memory. An index entry indicates a storage unit in the high speed memory. A corresponding non-free index is set for a different type of low speed memory. The indicated storage unit in the high speed memory is assigned to a corresponding low speed memory by including the index entry in the non-free index. The storage unit in the high speed memory is recovered by demoting the index entry from the non-free index. The mechanism acquires a margin performance loss corresponding to a respective non-free index in response to receipt of a demotion request. The margin performance loss represents a change in a processor read operation time caused by performing a demotion operation in a corresponding non-free index. The mechanism compares the margin performance losses of the respective non-free indexes and selecting a non-free index whose margin performance loss satisfies a demotion condition as a demotion index. The mechanism selects an index entry from the demotion index to perform the demotion operation.

Abstract translation: 提供了一种用于管理高速存储器的机构。 索引条目指示高速存储器中的存储单元。 为不同类型的低速存储器设置相应的非自由索引。 通过将索引条目包括在非自由索引中，将高速存储器中的指示存储单元分配给相应的低速存储器。 通过从非自由索引降级索引条目来恢复高速存储器中的存储单元。 该机制响应于接收到降级请求而获得与相应的非自由索引相对应的保证金业绩损失。 余量性能损失表示通过在相应的非自由索引中执行降级操作而导致的处理器读取操作时间的变化。 该机制比较了各自的非自由指标的保证金业绩损失，并选择了其保值业绩损失满足降级条件作为降级指标的非自由指数。 该机制从降级指标中选择一个索引条目进行降级操作。

公开(公告)号：US20130073900A1

公开(公告)日：2013-03-21

申请号：US13237397

申请日：2011-09-20

Applicant: Chao Guang Li ,  Yao Peng ,  Cheng-Chung Song ,  Zhi Qiang Wang ,  Hui Zhang

Inventor： Chao Guang Li ,  Yao Peng ,  Cheng-Chung Song ,  Zhi Qiang Wang ,  Hui Zhang

IPC: G06F11/20

CPC classification number: G06F11/1092 ,  G06F11/3034 ,  G06F11/3055 ,  G06F11/3409

Abstract: A method for improving the performance of a RAID under rebuild is disclosed. In one embodiment, such a method includes identifying a RAID requiring rebuild, such as by identifying a RAID having one or more failed storage-drive components. The method then automatically performs the following in response to identifying the RAID: the method identifies hot extents (i.e., extents most heavily accessed) in the RAID; the method migrates the hot extents from the identified failed RAID to a normal RAID not requiring rebuild, such as to an underused RAID; and the method rebuilds the failed RAID. The migration of the hot extents will ideally occur while the RAID is being rebuilt but may also be performed prior to the rebuild process. A corresponding apparatus and computer program product are also disclosed.

Abstract translation: 公开了一种用于改善重建时的RAID性能的方法。 在一个实施例中，这种方法包括识别需要重建的RAID，例如通过识别具有一个或多个故障存储驱动器组件的RAID。 该方法然后自动执行以下响应于识别RAID：该方法识别RAID中的热盘区（即，最大程度访问的盘区）; 该方法将热区从识别的故障RAID迁移到不需要重建的正常RAID，例如未使用的RAID; 并且该方法重建故障RAID。 理想情况下，在重建RAID时，会发生热盘区的迁移，但也可能在重建过程之前执行。 还公开了相应的装置和计算机程序产品。

公开(公告)号：US09658896B2

公开(公告)日：2017-05-23

申请号：US13473485

申请日：2012-05-16

Applicant: Lawrence Y. Chiu ,  Chao Guang Li ,  Yang Liu ,  Paul H. Muench

Inventor： Lawrence Y. Chiu ,  Chao Guang Li ,  Yang Liu ,  Paul H. Muench

IPC: G06F9/50 ,  G06F3/06

CPC classification number: G06F9/5088 ,  G06F3/061 ,  G06F3/0647 ,  G06F3/0653 ,  G06F3/0685 ,  G06F2209/5022

Abstract: A method to optimize workload across a plurality of storage devices of a storage system, where the method monitors a workload of a first storage device belonging to a first tier of the storage system, calculates a performance of the workload of the first storage device belonging to a first tier of the storage system, interpolates a performance threshold for the first storage device using the workload pattern of the first storage device and a profile of the first storage device, the profile identifying a benchmark performance of the first storage device, and optimizes a usage of the first storage device within the storage system to improve a performance of the first storage device.

公开(公告)号：US08719619B2

公开(公告)日：2014-05-06

申请号：US13237397

申请日：2011-09-20

Applicant: Chao Guang Li ,  Yao Peng ,  Cheng-Chung Song ,  Zhi Qiang Wang ,  Hui Zhang

Inventor： Chao Guang Li ,  Yao Peng ,  Cheng-Chung Song ,  Zhi Qiang Wang ,  Hui Zhang

IPC: G06F11/00

CPC classification number: G06F11/1092 ,  G06F11/3034 ,  G06F11/3055 ,  G06F11/3409

Abstract: A method for improving the performance of a RAID under rebuild is disclosed. In one embodiment, such a method includes identifying a RAID requiring rebuild, such as by identifying a RAID having one or more failed storage-drive components. The method then automatically performs the following in response to identifying the RAID: the method identifies hot extents (i.e., extents most heavily accessed) in the RAID; the method migrates the hot extents from the identified failed RAID to a normal RAID not requiring rebuild, such as to an underused RAID; and the method rebuilds the failed RAID. The migration of the hot extents will ideally occur while the RAID is being rebuilt but may also be performed prior to the rebuild process. A corresponding apparatus and computer program product are also disclosed.

Abstract translation: 公开了一种用于改善重建时的RAID性能的方法。 在一个实施例中，这种方法包括识别需要重建的RAID，例如通过识别具有一个或多个故障存储驱动器组件的RAID。 该方法然后自动执行以下响应于识别RAID：该方法识别RAID中的热盘区（即，最大程度访问的盘区）; 该方法将热区从识别的故障RAID迁移到不需要重建的正常RAID，例如未使用的RAID; 并且该方法重建故障RAID。 理想情况下，在重建RAID时，会发生热盘区的迁移，但也可能在重建过程之前执行。 还公开了相应的装置和计算机程序产品。

公开(公告)号：US20120254564A1

公开(公告)日：2012-10-04

申请号：US13431479

申请日：2012-03-27

Applicant: Xue D. Gao ,  Chao Guang Li ,  Yang Liu ,  Yi Yang

Inventor： Xue D. Gao ,  Chao Guang Li ,  Yang Liu ,  Yi Yang

IPC: G06F12/12

CPC classification number: G06F12/00 ,  G06F11/1451 ,  G06F12/0866 ,  G06F12/121 ,  G06F2212/217

Abstract: A mechanism is provided for managing a high speed memory. An index entry indicates a storage unit in the high speed memory. A corresponding non-free index is set for a different type of low speed memory. The indicated storage unit in the high speed memory is assigned to a corresponding low speed memory by including the index entry in the non-free index. The storage unit in the high speed memory is recovered by demoting the index entry from the non-free index. The mechanism acquires a margin performance loss corresponding to a respective non-free index in response to receipt of a demotion request. The margin performance loss represents a change in a processor read operation time caused by performing a demotion operation in a corresponding non-free index. The mechanism compares the margin performance losses of the respective non-free indexes and selecting a non-free index whose margin performance loss satisfies a demotion condition as a demotion index. The mechanism selects an index entry from the demotion index to perform the demotion operation.

Abstract translation: 提供了一种用于管理高速存储器的机构。 索引条目指示高速存储器中的存储单元。 为不同类型的低速存储器设置相应的非自由索引。 通过将索引条目包括在非自由索引中，将高速存储器中的指示存储单元分配给相应的低速存储器。 通过从非自由索引降级索引条目来恢复高速存储器中的存储单元。 该机制响应于接收到降级请求而获得与相应的非自由索引相对应的保证金业绩损失。 余量性能损失表示通过在相应的非自由索引中执行降级操作而导致的处理器读取操作时间的变化。 该机制比较了各自的非自由指标的保证金业绩损失，并选择了其保值业绩损失满足降级条件作为降级指标的非自由指数。 该机制从降级指标中选择一个索引条目进行降级操作。

公开(公告)号：US20130312005A1

公开(公告)日：2013-11-21

申请号：US13473485

申请日：2012-05-16

Applicant: Lawrence Y. Chiu ,  Chao Guang Li ,  Yang Liu ,  Paul H. Muench

Inventor： Lawrence Y. Chiu ,  Chao Guang Li ,  Yang Liu ,  Paul H. Muench

IPC: G06F9/46

CPC classification number: G06F9/5088 ,  G06F3/061 ,  G06F3/0647 ,  G06F3/0653 ,  G06F3/0685 ,  G06F2209/5022

Abstract: A method to optimize workload across a plurality of storage devices of a storage system, where the method monitors a workload of a first storage device belonging to a first tier of the storage system, calculates a performance of the workload of the first storage device belonging to a first tier of the storage system, interpolates a performance threshold for the first storage device using the-workload pattern of the first storage device and a profile of the first storage device, the profile identifying a benchmark performance of the first storage device, and optimizes a usage of the first storage device within the storage system to improve a performance of the first storage device.

Abstract translation: 一种用于优化存储系统的多个存储设备的工作负荷的方法，其中所述方法监视属于所述存储系统的第一层的第一存储设备的工作负载，计算属于所述存储系统的所述第一存储设备的工作负载的性能 存储系统的第一层，使用第一存储设备的工作负载模式和第一存储设备的简档来描绘第一存储设备的性能阈值，该简档识别第一存储设备的基准性能，并且优化 使用存储系统内的第一存储设备来改善第一存储设备的性能。