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1. 发明授权

US06260108B1 System and method for modeling and optimizing I/O throughput of multiple disks on a bus 失效
标题翻译：用于建模和优化总线上多个磁盘的I / O吞吐量的系统和方法
公开(公告)号：US06260108B1
公开(公告)日：2001-07-10
申请号：US09110114
申请日：1998-07-02
申请人： Rakesh D. Barve , Phillio B. Gibbons , Bruce K. Hillyer , Yossi Matias , Elizabeth Shriver , Jeffrey S. Vitter
发明人： Rakesh D. Barve , Phillio B. Gibbons , Bruce K. Hillyer , Yossi Matias , Elizabeth Shriver , Jeffrey S. Vitter
IPC分类号： G06F1200
CPC分类号： G06F3/0613 , G06F3/0653 , G06F3/0689 , G06F12/0866
摘要： A method for estimating and read durations, in response to requests to read data blocks stored in the disk drives in a computer system having a plurality of disk drives. Each disk drive has a disk cache with a non-zero fence parameter value coupled to a host computer via a common bus. The method according to one embodiment, comprises the steps of: (a) measuring an overhead period corresponding to the time during which a request to read is transmitted to a disk drive via the bus; (b) measuring an expected minimum positioning time corresponding to the shortest time required for a disk drive to locate said data block; (c) measuring mechanism-to-cache read time corresponding to the time required for a disk drive to transfer a data portion BC to a disk cache; (d) measuring the time required to transfer data blocks stored in each of said disk caches to the host; and (e) adding the times measured at steps (a) through (d).
摘要翻译：响应于在具有多个磁盘驱动器的计算机系统中读取存储在磁盘驱动器中的数据块的请求来估计和读取持续时间的方法。每个磁盘驱动器具有通过公共总线耦合到主计算机的非零栅栏参数值的磁盘高速缓存。根据一个实施例的方法包括以下步骤：（a）测量对应于通过总线将读取请求发送到磁盘驱动器的时间的开销周期; （b）测量对应于磁盘驱动器定位所述数据块所需的最短时间的预期最小定位时间; （c）测量对应于磁盘驱动器将数据部分BC传送到磁盘高速缓存所需的时间的缓存读取时间; （d）测量将存储在每个所述盘高速缓存中的数据块传送到主机所需的时间; 和（e）加入在步骤（a）至（d）测量的时间。

2. 发明授权

US06301640B2 System and method for modeling and optimizing I/O throughput of multiple disks on a bus 失效
标题翻译：用于建模和优化总线上多个磁盘的I / O吞吐量的系统和方法
公开(公告)号：US06301640B2
公开(公告)日：2001-10-09
申请号：US09110110
申请日：1998-07-02
申请人： Rakesh D. Barve , Phillip B. Gibbons , Bruce K. Hillyer , Yossi Matias , Elizabeth Shriver , Jeffrey S. Vitter
发明人： Rakesh D. Barve , Phillip B. Gibbons , Bruce K. Hillyer , Yossi Matias , Elizabeth Shriver , Jeffrey S. Vitter
IPC分类号： G06F1200
CPC分类号： G06F3/0613 , G06F3/0656 , G06F3/0689 , G06F12/0866
摘要： A method for scheduling access of data blocks located in a computer system having a plurality of disk drives, each disk drive has a disk cache with a specified fence parameter value coupled to a host computer via a common bus. The method according to one embodiment, comprises the steps of: (a) sequentially accessing each of the disk drives for a predetermined number of iterations to retrieve a predetermined number of data blocks; (b) for a specified number of the iterations, transferring data located in the disk cache to be transferred to the common bus and requesting data corresponding to the following iteration to be transferred to the disk cache; and (c) repeating steps (a) and (b) until the predetermined iterations are completed.
摘要翻译：一种用于调度位于具有多个磁盘驱动器的计算机系统中的数据块的访问的方法，每个磁盘驱动器具有通过公共总线耦合到主计算机的指定围栏参数值的磁盘高速缓存。根据一个实施例的方法包括以下步骤：（a）以预定次数的迭代顺序访问每个磁盘驱动器以检索预定数量的数据块; （b）对于指定数量的迭代，将位于磁盘高速缓存中的数据传送到公共总线并请求与以下迭代对应的数据传送到磁盘高速缓存; 和（c）重复步骤（a）和（b），直到预定的迭代完成。

3. 发明授权

US06282607B1 Efficient scheduling of reading data from multiple storage mediums to satisfy multiple requests 失效
标题翻译：从多个存储介质读取数据以满足多个请求的高效调度
公开(公告)号：US06282607B1
公开(公告)日：2001-08-28
申请号：US08936495
申请日：1997-09-18
申请人： Bruce K. Hillyer , Rajeev Rastogi , Abraham Silberschatz
发明人： Bruce K. Hillyer , Rajeev Rastogi , Abraham Silberschatz
IPC分类号： G06F1200
CPC分类号： G06F3/0611 , G06F3/0634 , G06F3/0655 , G06F3/0686
摘要： A dynamic process for improving the performance of a tape-based storage system is disclosed which takes a global view with regard to scheduling and tape selection. All requested data blocks located on multiple tapes within the storage system are analyzed and, taking advantage of the existing replication of some of the requested data blocks on multiple tapes and the location of the data blocks on the tapes, a schedule is formed that results in the reading/downloading of requested data blocks in an efficient manner.
摘要翻译：公开了一种用于提高基于带的存储系统的性能的动态过程，其涉及调度和磁带选择的全局视图。分析位于存储系统内的多个磁带上的所有请求的数据块，并且利用多个磁带上的一些所请求的数据块的现有复制以及数据块在磁带上的位置，形成一个计划，其导致以有效的方式读取/下载所请求的数据块。

4. 发明授权

US6041354A Dynamic hierarchical network resource scheduling for continuous media 失效
标题翻译：连续媒体的动态层次化网络资源调度
公开(公告)号：US6041354A
公开(公告)日：2000-03-21
申请号：US525937
申请日：1995-09-08
申请人： Alexandros Biliris , Bruce K. Hillyer , Euthimios Panagos
发明人： Alexandros Biliris , Bruce K. Hillyer , Euthimios Panagos
IPC分类号： G06F13/10 , G06F3/06 , G06F9/46 , G06F9/48 , G06F9/50 , G06F13/00 , G06F13/16 , H04N7/173 , H04N21/24 , H04N21/2662 , G06F13/14
CPC分类号： G06F9/4887 , H04N21/2393 , H04N21/241 , H04N7/17336 , G06F2209/485
摘要： An apparatus and method is provided that supports continuous media for conventional networked workstations and PC's. Described are user-level mechanisms and policies designed to give good, efficient multimedia service under the mild assumption that the operating system provides a preemptive real-time scheduling class that can be used to give CPU cycles to the multimedia processes in preference to other processes that are not time sensitive. There are no modifications to the operating system kernel and isochronous networks are not required. It suffices for an application to state that it wants to play a particular stream of a type known to the server (e.g. a file containing MPEG-1 video 320.times.240 pixels, 8-bit color, 30 frames per second), or for the application to specify a frame rate and an index describing the offset of each frame in a file.
摘要翻译：提供了一种支持常规联网工作站和个人电脑的连续媒体的装置和方法。描述的是用户级机制和策略，其设计用于在温和的假设下提供良好，高效的多媒体服务，该假设是操作系统提供可抢占的实时调度类，其可以用于给予多媒体过程的CPU周期，优先于其他进程不时间敏感。对操作系统内核没有任何修改，不需要同步网络。应用程序可以声明它想要播放服务器已知的类型的特定流（例如，包含MPEG-1视频320x240像素，8位颜色，每秒30帧的文件），或者应用程序指定帧速率和描述文件中每个帧的偏移量的索引。

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