International Business Machines Corporation

Vikas Ahluwalia

Scott Alan Piper

Vipul Paul

Steven Daryl Cook

Brian You

Jeffery J Van Heuklon

John Thomas Flynn, Jr

Arun Batish

John T Flynn

Manoj K Negi

Akulavenkatavara Prasadarao

Vinod Menon

Kam-Lun Ng

Thomas M Carlier

Paul R Shaw

One embodiment provides a power management method for servers in a data center. A group of servers is selected, and the total power allocated to a group of servers is limited to within a group power budget. A separate server power allocation is individually requested for each of a plurality of the servers. Within the constraints of the group power budget, the requested server power allocations are selectively granted for a specified magnitude and duration. The granted server power allocations are also selectively renewed, either automatically or upon request of the servers. Each server that has not received a renewed server power allocation from a group power management entity upon the expiration of the specified duration automatically reduces its own power consumption, such as by the server powering itself off.

Server power management with automatically-expiring server power allocations

Automated testing of software builds having updated signature required modules, such as plug and play devices, is facilitated. A build (e.g., a daily build) of the software is performed, which includes one or more updated signature required modules. These modules are included within the build, even though the modules are unsigned. Automated testing is then performed against the daily builds.

Facilitating the automated testing of daily builds of software

Commands are processed by hardware within a virtual client computing environment, such as graphics-related commands processed by graphics hardware. A server computing device includes graphics hardware, a virtual client computing environment, and a server computing environment. The graphics hardware processes graphics-related commands into responses. The virtual client computing environment includes an encoding application that issues the commands. The server computing environment includes a decoding application. The encoding application includes a first thread that receives the commands and places them onto a first queue. The encoding application includes a second thread that receives the responses from a second queue and communicates the responses to a remote display device. The decoding application includes a third thread that receives the commands from the first queue, communicates the commands to the graphics hardware, receives the responses from the graphics hardware, and places the responses onto the second queue.

Hardware processing of commands within virtual client computing environment

Systems and methods for managing a device in a distributed file system are provided. In one embodiment, the method comprises instantiating a physical device object, in response to a file system driver detecting a device remotely connected to a computing system via a distributed network. An operating system running on the computing device loads a disk function driver for managing access to the device. A plug and play manager of the operating system enumerates the device. The disk function driver instantiates and registers a functional device object with a mount manager of the operating system. A file system instantiates a volume device object for a logical drive volume mapped to the device and the mount manager mounts the volume device object on the functional device object.

Managing a device in a distributed file system, using plug and play

A computer readable medium and system for remotely monitoring activity includes generating first server heartbeat information at a first server at a local site, and storing the first server heartbeat information in a first primary site disk at the local site. The method also includes sending the first server heartbeat information from the first primary site disk, to a first secondary site disk at a remote site. The method further includes receiving information from a 10 second secondary site disk at the local site, and determining if the information received from the second secondary site disk includes updated heartbeat information.

Computer readable medium and system for remote activity monitoring

A method and system for maintaining integrity of metadata associated with a migrated file. Following migration of data from a source filesystem to a destination filesystem, a tool is automatically invoked to detect if there are any differences in metadata associated with the files and/or folders at each location. Each select field of the metadata at the source filesystem is reviewed to ensure that it matches with the equivalent field at the destination filesystem. In the event at least one of the reviewed metadata fields does not match, an error is generated and forwarded to an operator.

Method of verifying metadata of a migrated file

A method and system for tracking usage of memory in a computer system is provided. Arguments for both the size of a memory allocation and the type of memory being allocated are reserved in a fixed location. A first fixed location is reserved for small memory allocations, i.e. less than one page, and a second fixed location is reserved for large memory allocations, i.e. one page or larger. The fixed location is selected based upon a determination of the size of an allocation required by a calling application. Upon receipt of a memory allocation request by the calling application, a pointer is returned to the calling application identifying the fixed location. Similarly, upon release of memory by the calling application, a counter is decremented to track the amount of memory in use by the application.

Memory tracking with preservation of alignment semantics

A method for remotely monitoring activity includes generating first server heartbeat information at a first server at a local site, and storing the first server heartbeat information in a first primary site disk at the local site. The method also includes sending the first server heartbeat information from the first primary site disk, to a first secondary site disk at a remote site. The method further includes receiving information from a second secondary site disk at the local site, and determining if the information received from the second secondary site disk includes updated heartbeat information.

Remote activity monitoring

Memory allocation requests are satisfied from a memory pool or from lookaside lists, based on the memory size requested to be allocated. A method, for each of a number of future differently sized memory allocations, determines which memory allocations are to be satisfied from a lookaside list, and which memory allocations are to be satisfied from a memory pool. For each memory allocation to be satisfied from a lookaside list, a corresponding lookaside list for the allocation is initialized. A table is constructed that has a number of entries corresponding to all the differently sized memory allocations. Each entry corresponding to a memory allocation to be satisfied from a lookaside list points to the lookaside list for that memory allocation.

Growing community of inventors

Kirkland, WA, United States of America

Vikas Ahluwalia