The performance of a computer system having a faster memory unit and a slower memory unit is improved. Memory locations of the faster memory unit are shared by a plurality of memory locations of the slower memory unit. The frequently accessed routines and data structures in the system are identified. The size of each frequently accessed routine is determined. Each routine is associated with a Moment Value computed according to a size of each routine and a frequency of access of the routine. The ...

A memory system constructed in accordance with the invention receives data blocks and associated host LBAs from a host processor. The memory subsystem initially associates a check value with each received data block, each check value dependent upon a host LBA that is associated with the respectively received data block. The memory subsystem stores each received data block and associated check value as an "extended" data block. Thereafter, the memory subsystem, in response to a host processor req...

A method and system for optimizing energy consumption during data file read/write operations in a battery powered disk-based memory system is provided.

A method of facilitating computing-environment control of a resource to be accessed by existing program code is provided which includes transparently replacing an uncontrolled resource referenced by existing program code with a resource controlled by a computing environment. The method also includes transparently interposing at least one resource management service of the computing environment between the existing program code and the resource controlled by the computing environment, wherein the...

A computing system and method employing a processor device for generating real addresses associated with memory locations of a real memory system for reading and writing of data thereto, the system comprising: a plurality of memory blocks in the real memory system for storing data, a physical memory storage for storing the pages of data comprising one or more real memory blocks, each real memory block partitioned into one or more sectors, each comprising contiguous bytes of physical memory; a tr...

An address lookup table in a multiport switch is implemented as a plurality of address sub-tables. Entries in the address sub-tables are stored at row addresses based on a hash of the information in the entry. Hash collisions are stored in a common heap as a linked list of chained values. Entries in the address sub-tables at any particular address are alternated between the address sub-tables. A search of the address sub-table for the particular entry is performed simultaneously on the plurality...

A method for fabricating double-gate and tri-gate transistors in the same process flow is described. In one embodiment, a sacrificial layer is formed over stacks that include semiconductor bodies and insulative members. The sacrificial layer is planarized prior to forming gate-defining members. After forming the gate-defining members, remaining insulative member portions are removed from above the semiconductor body of the tri-gate device but not the I-gate device. This facilitates the formation...

A method, apparatus, and computer-readable media for authorizing users of network portals to access a secure resource hosted by a secure server comprises storing a plurality of user identifiers, each representing a user of an owning portal; storing for each of the user identifiers an access privilege to the secure resource; storing a proxy user identifier representing a guest portal and a guest access privilege to the secure resource for all of the users of the guest portal; receiving from the o...

A method and system for optimizing energy consumption during data file read/write operations in a battery powered disk-based memory system is provided.

Information presented to a user via an information access system is ranked according to a prediction of the likely degree of relevance to the user's interests. A profile of interests is stored for each user having access to the system. Items of information to be presented to a user are ranked according to their likely degree of relevance to that user and displayed in order of ranking. The prediction of relevance is carried out by combining data pertaining to the content of each item of informati...