摘要:
A service module that provides for discovery of one or more network interfaces connecting a prospective remote procedure call (RPC) client, facilitates the provision of RPC programs in a network including multi-horned systems. When a request for a network address to an RPC application providing an RPC program is received from the RPC client, the RPC bind daemon discovers from the module, using the client response address, over which interface(s) the client is accessible. The daemon then selects an address of a network path to the RPC application that the prospective client can access and returns the corresponding network address. The service module monitors the network stack for RPC get address requests and builds tables of client address entries with corresponding network interface identifiers. The entries are retired according to an aging policy.
摘要:
Some embodiments comprise a method for selecting data to be transferred to a storage space of virtual memory and include identifying a set of data and determining subsets. Determining subsets may allow for delays before transferring the subsets and allow access to memory of the subsets during the delays. Accesses during the delays may enable embodiments to select other data to be transferred to the storage space and prevent transference of the accessed data. Other embodiments comprise apparatuses that have a paging space, a page identifier, and a page transferrer to transfer pages to the paging space after a delay. The delay may prevent a number of pages from being transferred to the paging space, such as for pages that were accessed during the delay.
摘要:
A method, system, and program for facilitating presentation and monitoring of electronic mail messages with reply by constraints are provided. Within a network environment, a server receives electronic mail messages with separate selected reply by dates, wherein each electronic mail message is addressed for delivery by the server to at least one particular recipient. The server enables, for display within a user interface accessible to the particular recipient, a separate record for each electronic mail message within an inbox. The inbox include at least one selectable sublevel, wherein upon selection of the particular selectable sublevel of the inbox, only a selection of records for electronic mail messages with a same reply by date as the selectable sublevel are displayed within the user interface.
摘要:
A system and method for implementing a fast file synchronization in a data processing system. A memory management unit divides a file stored in system memory into a collection of data block groups. In response to a master (e.g., processing unit, peripheral, etc.) modifying a first data block group among the collection of data block groups, the memory management unit writes a first block group number associated with the first data block group to system memory. In response to a master modifying a second data block group, the memory management unit writes the first data block group to a hard disk drive and writes a second data block group number associated with the second data block group to system memory. In response to a request to update modified data block groups of the file stored in the system memory to the hard disk drive, the memory management unit writes the second data block to the hard disk drive.
摘要:
Scheduling threads in a multi-processor computer system including establishing an interrupt threshold for a thread, where the interrupt threshold represents a maximum permissible number of interrupts during thread execution on a processor; executing the thread on a current processor, where the thread has thread affinity for one or more processors including the current processor; counting a number of interrupts during execution of the thread on the current processor; and removing thread affinity for the current processor in dependence upon the counted number of interrupts and the interrupt threshold.
摘要:
Administration of locks for critical sections of computer programs in a computer that supports a multiplicity of logical partitions that include determining by a thread executing on a virtual processor executing in a time slice on a physical processor whether an expected lock time for a critical section of the thread exceeds a remaining entitlement of the virtual processor in the time slice and deferring acquisition of a lock if the expected lock time exceeds the remaining entitlement.
摘要:
A system and method for scheduling threads in a Simultaneous Multithreading (SMT) processor environment utilizing multiple SMT processors is provided. Poor performing threads that are being run on each of the SMT processors are identified. After being identified, the poor performing threads are moved to a different SMT processor. Data is captured regarding the performance of threads. In one embodiment, this data includes each threads' CPI value. When a thread is moved, data regarding the thread and its performance at the time it was moved is recorded along with a timestamp. The data regarding previous moves is used to determine whether a thread's performance is improved following the move.
摘要:
Some embodiments comprise a method for selecting data to be transferred to a storage space of virtual memory and include identifying a set of data and determining subsets. Determining subsets may allow for delays before transferring the subsets and allow access to memory of the subsets during the delays. Accesses during the delays may enable embodiments to select other data to be transferred to the storage space and prevent transference of the accessed data. Other embodiments comprise apparatuses that have a paging space, a page identifier, and a page transferrer to transfer pages to the paging space after a delay. The delay may prevent a number of pages from being transferred to the paging space, such as for pages that were accessed during the delay.
摘要:
The exemplary embodiments provide a computer-implemented method, apparatus, and computer-usable program code for managing memory. A notice of a shortage of real memory is received. For each active thread, the thread classification of the active thread is compared to a global hierarchy of thread classifications to determine a thread to affect. The global hierarchy of thread classifications defines the relative importance of each thread classification. An action to take for the determined thread is determined. The determined action is performed for the determined thread.
摘要:
A system for balancing component load. In response to receiving a request, data is updated to reflect a current number of pending requests. In response to analyzing the updated data, it is determined whether throttling is necessary. In response to determining that throttling is not necessary, a corresponding request to the received request is created and a flag is set in the corresponding request. Then, the corresponding request is sent to one of a plurality of lower level components of an input/output stack of an operating system for processing based on the analyzed data to balance component load in the input/output stack of the operating system.