摘要:
An enhanced ATM switch with CPU node interconnect functionality and peripheral interconnect functionality and network functionality. The ATM switch provides low latency transfer between computer nodes and performs input/output operations with peripherals through the ATM network. SCSI Fibre Channel protocol (FCP) commands are implemented according to ATM standards to provide communication with peripherals. A segmentation and reassembly (SAR) unit is provided for performing ATM segmentation and reassembly. The SAR includes functional units which allow direct connection of an application agent to the core of the switch once the cell characteristics are determined by the application agent and provides ATM cell translation to and from available kernel buffers. The transmission media in the ATM network comprises digital optical links. The enhanced ATM switch may also include a synchronous optical network (SONET) interface for providing SONET transmission over the digital optical links in the ATM network.
摘要:
A technique for managing storage of a data object in a storage device involves receiving the data object (A) to store in the storage device, where the data object has an indicator bit pattern (P). Successive compression data transformations are applied to data object A to obtain respective corresponding compressed data objects, and one of these compressed data objects is selected, such that the selected compressed data object (C) has the shortest length with respect to the remaining compressed data objects. Compression information (I) is then associated with the compression data transformation used to generate data object C, and a threshold value T is calculated at least partly from the length of compression information I. If length (C)+T.gtoreq.length (A), then the indicator bit pattern of data object A is reset and the data object A is written to the storage device. If length (C)+T
摘要翻译:用于管理存储设备中的数据对象的存储的技术涉及接收存储在存储设备中的数据对象(A),其中数据对象具有指示符位模式(P)。 将连续的压缩数据变换应用于数据对象A以获得相应的对应的压缩数据对象,并且选择这些压缩数据对象中的一个,使得所选择的压缩数据对象(C)相对于剩余的压缩数据对象具有最短的长度 。 压缩信息(I)然后与用于生成数据对象C的压缩数据变换相关联,并且至少部分地根据压缩信息I的长度来计算阈值T.如果长度(C)+ T.gtoreq.length( A),则复位数据对象A的指示符位模式,并将数据对象A写入存储装置。 如果长度(C)+ T <长度(A),则设置数据对象C的指示符位模式,压缩信息I被合并到数据对象C中,数据对象C被写入存储装置。
摘要:
Computing capacity of a computing environment can be managed by controlling it associated processing capacity based on a target (or desired) capacity. In addition, fine-grained control over the processing capacity can be exercised. For example, a computing system can change the processing capacity (e.g., processing rate) of at least one processor operating based on a target capacity. The computing system may also be operable to change the processing capacity based on a measured processing capacity (e.g., a measured average of various processing rates of a processor taken over a period of time when a processor may have been operating at different processing rates over that period). By way of example, the processing rate of a processor can be switched between 1/8 and 2/8 of a maximum processing rate to achieve virtually any effective processing rates between them.
摘要:
A technique for managing storage of a data object in a storage device involves receiving the data object (A) to store in the storage device, where the data object has an indicator bit pattern (P). Successive compression data transformations are applied to data object A to obtain respective corresponding compressed data objects, and one of these compressed data objects is selected, such that the selected compressed data object (C) has the shortest length with respect to the remaining compressed data objects. Compression information (I) is then associated with the compression data transformation used to generate data object C, and a threshold value T is calculated at least partly from the length of compression information I. If length (C)+T.gtoreq.length (A), then the indicator bit pattern of data object A is reset and the data object A is written to the storage device. If length (C)+T
摘要翻译:用于管理存储设备中的数据对象的存储的技术涉及接收存储在存储设备中的数据对象(A),其中数据对象具有指示符位模式(P)。 将连续的压缩数据变换应用于数据对象A以获得相应的对应的压缩数据对象,并且选择这些压缩数据对象中的一个,使得所选择的压缩数据对象(C)相对于剩余的压缩数据对象具有最短的长度 。 压缩信息(I)然后与用于生成数据对象C的压缩数据变换相关联,并且至少部分地根据压缩信息I的长度来计算阈值T.如果长度(C)+ T.gtoreq.length( A),则复位数据对象A的指示符位模式,并将数据对象A写入存储装置。 如果长度(C)+ T <长度(A),则设置数据对象C的指示符位模式,压缩信息I被合并到数据对象C中,数据对象C被写入存储装置。
摘要:
A technique for managing storage of a data object in a storage device involves receiving the data object (A) to store in the storage device, where the data object has an indicator bit pattern (P). Successive compression data transformations are applied to data object A to obtain respective corresponding compressed data objects, and one of these compressed data objects is selected, such that the selected compressed data object (C) has the shortest length with respect to the remaining compressed data objects. Compression information (I) is then associated with the compression data transformation used to generate data object C, and a threshold value T is calculated at least partly from the length of compression information I. If length (C)+T≧length (A), then the indicator bit pattern of data object A is reset and the data object A is written to the storage device. If length (C)+T
摘要翻译:用于管理存储设备中的数据对象的存储的技术涉及接收存储在存储设备中的数据对象(A),其中数据对象具有指示符位模式(P)。 将连续的压缩数据变换应用于数据对象A以获得相应的对应的压缩数据对象,并且选择这些压缩数据对象中的一个,使得所选择的压缩数据对象(C)相对于剩余的压缩数据对象具有最短的长度 。 压缩信息(I)然后与用于生成数据对象C的压缩数据变换相关联,并且至少部分地根据压缩信息I的长度来计算阈值T.如果长度(C)+T≥长度(A) ,则复位数据对象A的指示符位模式,并将数据对象A写入存储装置。 如果长度(C)+ T <长度(A),则设置数据对象C的指示符位模式,压缩信息I被合并到数据对象C中,数据对象C被写入存储装置。
摘要:
The subject matter herein relates to database management systems and, more particularly, to decoupled logical and physical data storage within a database management system. Various embodiments provide systems, methods, and software that separate physical storage of data from logical storage of data. These embodiments include a mapping of logical storage to physical storage to allow data to be moved within the physical storage to increase database responsiveness.
摘要:
A system calculates the optimal allocation of two or more resources provided by a resource provider to a task within a computer system from a plurality of possible allocations. In doing so, the system calculates the total volume of an N-dimensional cube, where N is the number of resources provided by the resource provider, representing the respective amounts of resources available to be allocated. The system also calculates the average volume of the N-1 dimensional shapes forming the sides of the N-dimensional cube. The system then calculates, at least partly from the ratio of the total volume to the average volume, the balance resulting from the allocation of resources represented by the N-dimensional cube. The system then calculates the imbalance resulting from the allocation of resources at least partly from the balance and determines the smallest imbalance as the optimal allocation of resources.
摘要:
A distributed service subsystem comprises one or more cabinets containing one or more computer systems, one or more administration consoles for controlling the computer systems in the cabinets, and a network interconnecting the administration consoles and the cabinets. Each of the cabinets includes a cabinet module interface controller (CMIC) coupled to and controlling one or more chassis management boards (CMBs). The CMBs are each adapted to communicate with one or more managed components in the cabinet through a component specific interface.
摘要:
To back up data stored in a distributed database system, a backup utility is configured with information regarding locations of data stored in the distributed database system having a plurality of nodes. The backup utility retrieves, based on the information regarding locations of data stored in the distributed database system, backup data from the plurality of nodes for backup storage.
摘要:
A disk drive having a single drive motor and multiple platters that incorporates two discrete data paths, actuators and heads to the disk platters. Utilizing the economy of very large capacity disk platters, two or more disk drives can be created within a single physical enclosure. These two disks will be share many common parts such as the drive enclosure and spindle motor, but will have the performance and appearance to the system as two or more independent disks. Instead of having one actuator arm, the virtual disks will have two or more actuator arms and two or more sets of digital electronics. The storage on all the platters is divided up among the actuators so that no storage location is shared, but all the actuators will operate concurrently. Each actuator will have exclusive use of a subset of the data storage. Disks normally only have one actuator connected to multiple heads, at least one per surface, which only allow a single data seek and data transfer at a time. The virtual disks will have two or more actuators, one for each virtual disk, improving performance for the capacity of the platters through concurrent data seeks and transfers to different data areas.