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    Determining server write activity levels to use to adjust write cache size
    1.
    发明授权
    Determining server write activity levels to use to adjust write cache size 有权
    确定用于调整写缓存大小的服务器写入活动级别

    公开(公告)号：US09247003B2

    公开(公告)日：2016-01-26

    申请号：US14606983

    申请日：2015-01-27

    Applicant: International Business Machines Corporation

    Inventor： Robert H. Bell, Jr. ,  Michael D. Roll ,  Olga Yiparaki

    IPC: G06F12/00 ,  H04L29/08 ,  G06F11/34

    CPC classification number: H04L67/1097 ,  G06F11/3409 ,  G06F11/3442 ,  G06F11/3485 ,  G06F2201/81 ,  G06F2201/88 ,  G06F2201/885 ,  H04L67/2847 ,  H04L67/2852 ,  H04L67/34 ,  Y02D10/34

    Abstract: Provided are a computer program product, system, and method for determining server write activity levels to use to adjust write cache size. Server write activity information on server write activity to the cache is gathered. The server write activity information is processed to determine a server write activity level comprising one of multiple write activity levels indicating a level of write activity. The determined server write activity level is transmitted to a storage server having a write cache, wherein the storage server uses the determined server write activity level to determine whether to adjust a size of the storage server write cache.

    Abstract translation: 提供了一种用于确定用于调整写入高速缓存大小的服务器写入活动级别的计算机程序产品，系统和方法。 收集服务器对缓存的写入活动的写入活动信息。 处理服务器写入活动信息以确定包括指示写入活动级别的多个写入活动级别中的一个的服务器写入活动级别。 确定的服务器写入活动级别被发送到具有写入高速缓存的存储服务器，其中存储服务器使用所确定的服务器写入活动级别来确定是否调整存储服务器写入高速缓存的大小。

    Reallocating unused memory databus utilization to another processor when utilization is below a threshold
    3.
    发明授权
    Reallocating unused memory databus utilization to another processor when utilization is below a threshold 有权
    当利用率低于阈值时，将未使用的内存数据总线利用率重新分配给另一个处理器

    公开(公告)号：US09317427B2

    公开(公告)日：2016-04-19

    申请号：US14514009

    申请日：2014-10-14

    Applicant: International Business Machines Corporation

    Inventor： Donald R. DeSota ,  Rajendra D. Panda ,  Venkat R. Indukuru ,  Joseph H. Robichaux ,  Robert H. Bell, Jr. ,  Steven P. Hartman

    IPC: G06F9/46 ,  G06F12/06 ,  G06F9/50 ,  G06F13/16

    CPC classification number: G06F12/0646 ,  G06F9/5011 ,  G06F9/5083 ,  G06F13/16 ,  G06F2212/1016

    Abstract: According to one aspect of the present disclosure a method and technique for managing memory access is disclosed. The method includes setting a memory databus utilization threshold for each of a plurality of processors of a data processing system to maintain memory databus utilization of the data processing system at or below a system threshold. The method also includes monitoring memory databus utilization for the plurality of processors and, in response to determining that memory databus utilization for at least one of the processors is below its threshold, reallocating at least a portion of unused databus utilization from the at least one processor to at least one of the other processors.

    Abstract translation: 根据本公开的一个方面，公开了一种用于管理存储器存取的方法和技术。 该方法包括为数据处理系统的多个处理器中的每个处理器设置存储器数据总线利用阈值，以将数据处理系统的存储器数据总线利用维持在系统阈值以下。 该方法还包括监视多个处理器的存储器数据总线利用率，并且响应于确定至少一个处理器的存储器数据总线利用率低于其阈值，从至少一个处理器重新分配未使用的数据总线利用的至少一部分 到至少一个其他处理器。

    Hybrid storage subsystem with mixed placement of file contents
    7.
    发明授权
    Hybrid storage subsystem with mixed placement of file contents 有权
    具有混合放置文件内容的混合存储子系统

    公开(公告)号：US08959286B2

    公开(公告)日：2015-02-17

    申请号：US13854484

    申请日：2013-04-01

    Applicant: International Business Machines Corporation

    Inventor： Robert H. Bell, Jr. ,  Men-Chow Chiang ,  Hong L. Hua ,  Mysore S. Srinivas

    IPC: G06F12/00 ,  G06F13/00 ,  G06F13/28 ,  G06F17/30 ,  G06F3/06

    CPC classification number: G06F17/30082 ,  G06F3/0611 ,  G06F3/064 ,  G06F3/0647 ,  G06F3/0685

    Abstract: A storage subsystem combining solid state drive (SSD) and hard disk drive (HDD) technologies provides low access latency and low complexity. Separate free lists are maintained for the SSD and the HDD and blocks of file system data are stored uniquely on either the SSD or the HDD. When a read access is made to the subsystem, if the data is present on the SSD, the data is returned, but if the block is present on the HDD, it is migrated to the SSD and the block on the HDD is returned to the HDD free list. On a write access, if the block is present in the either the SSD or HDD, the block is overwritten, but if the block is not present in the subsystem, the block is written to the HDD.

    Abstract translation: 组合固态硬盘（SSD）和硬盘驱动器（HDD）技术的存储子系统提供低访问延迟和低复杂度。 为SSD保留独立的免费列表，HDD和文件系统数据块可以唯一存储在SSD或HDD上。 当对子系统进行读取访问时，如果SSD上存在数据，则返回数据，但是如果该块存在于HDD上，则迁移到SSD，并将HDD上的块返回到 硬盘免费列表。 在写访问中，如果该块存在于SSD或HDD中，则该块被覆盖，但是如果块不存在于子系统中，则该块被写入HDD。

    Dynamic prioritization of cache access
    8.
    发明授权
    Dynamic prioritization of cache access 有权
    高速缓存访​​问的动态优先级

    公开(公告)号：US09563559B2

    公开(公告)日：2017-02-07

    申请号：US14283858

    申请日：2014-05-21

    Applicant: International Business Machines Corporation

    Inventor： Robert H. Bell, Jr. ,  Hong L. Hua ,  William A. Maron ,  Mysore S. Srinivas

    IPC: G06F12/08

    CPC classification number: G06F12/0815

    Abstract: Some embodiments of the inventive subject matter are directed to operations that include determining that an access request to a computer memory results in a cache miss. In some examples, the operations further include determining an amount of cache resources used to service additional cache misses that occurred within a period prior to the cache miss. Furthermore, in some examples, the operations further include servicing the access request to the computer memory based, at least in part, on the amount of the cache resources used to service the additional cache misses within the period prior to the cache miss.

    Abstract translation: 本发明主题的一些实施例涉及包括确定对计算机存储器的访问请求导致高速缓存未命中的操作。 在一些示例中，操作还包括确定用于服务在高速缓存未命中之前的时段内发生的附加高速缓存未命中的高速缓存资源量。 此外，在一些示例中，操作还包括至少部分地基于用于在高速缓存未命中之前的时段内服务附加高速缓存未命中的高速缓存资源的量来服务对计算机存储器的访问请求。

    ENERGY-AWARE JOB SCHEDULING FOR CLUSTER ENVIRONMENTS
    9.
    发明申请
    ENERGY-AWARE JOB SCHEDULING FOR CLUSTER ENVIRONMENTS 有权
    集群环境能源考核工作安排

    公开(公告)号：US20140075448A1

    公开(公告)日：2014-03-13

    申请号：US14084232

    申请日：2013-11-19

    Applicant: International Business Machines Corporation

    Inventor： Robert H. Bell, Jr. ,  Luigi Brochard ,  Donald R. DeSota ,  Rajendra D. Panda ,  Francois Thomas

    IPC: G06F9/50

    CPC classification number: G06F9/5094 ,  Y02D10/22

    Abstract: A job scheduler can select a processor core operating frequency for a node in a cluster to perform a job based on energy usage and performance data. After a job request is received, an energy aware job scheduler accesses data that specifies energy usage and job performance metrics that correspond to the requested job and a plurality of processor core operating frequencies. A first of the plurality of processor core operating frequencies is selected that satisfies an energy usage criterion for performing the job based, at least in part, on the data that specifies energy usage and job performance metrics that correspond to the job. The job is assigned to be performed by a node in the cluster at the selected first of the plurality of processor core operating frequencies.

    Abstract translation: 作业调度器可以为集群中的节点选择处理器核心工作频率，以基于能量使用和性能数据执行作业。 在接收到作业请求之后，能量感知作业调度器访问指定对应于所请求的作业和多个处理器核心操作频率的能量使用和作业性能度量的数据。 至少部分地基于指定与作业相对应的能量使用和作业性能度量的数据，选择满足用于执行作业的能量使用准则的多个处理器核心操作频率中​​的第一个。 该作业被分配为由多个处理器核心工作频率中所选择的第一个处理器核心工作频率中的簇中的节点执行。

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