Abstract: An image capturing apparatus including a mounting part capable of attaching/detaching a device capable of at least storing a captured image is provided. The image capturing apparatus obtains, if a device mounted in the mounting part has a function of executing image analysis processing for a part or a whole of an image captured by the image capturing apparatus, a processing time that is a time from a predetermined timing associated with a start of the image analysis processing to completion of the processing, if the device is caused to start executing the image analysis processing, obtains a result of the image analysis processing by accessing the device after an elapse of the processing time from the predetermined timing associated with the start.

Abstract: An electrical computer system processing architecture for providing fairness amongst client computers of the computer system is disclosed. The electrical computer system processing architecture comprises a plurality of client computers connected to at least one server by a computer network. Each of the client computers is configured to provide requests to the at least one server. The or each server comprises a store for storing requests provided by the plurality of client computers.

Abstract: An electrical computer system processing architecture for providing fairness amongst client computers of the computer system is disclosed. The electrical computer system processing architecture comprises a plurality of client computers connected to at least one server by a computer network. Each of the client computers is configured to provide requests to the at least one server. The or each server comprises a store for storing requests provided by the plurality of client computers.

Abstract: An approach for dynamically changing a copy policy associated with a cluster grid for tape storage virtualization which involves monitoring one or more statuses of a plurality of clusters associated with the cluster grid, wherein the one or more of the plurality of clusters are assigned one of a plurality of copy modes, detecting that at least one of the plurality of clusters, having a highest priority copy mode associated with the cluster grid, is unavailable, selecting an available second cluster of the plurality of clusters and changing the copy policy wherein the available second cluster is assigned the highest priority copy mode.

Abstract: The present disclosure relates to dynamic queue placement. In one embodiment, a method includes receiving a plurality of items for processing by a computing device, wherein each item received by the computing device is associated with a priority type. The method also includes determining a computed code for the plurality of items to assign a processing order in a queue for each of the plurality of items. The computed code is based on a timeout period for a lowest priority item of the plurality of items, and a safety margin interval of each of the plurality of items, the safety margin level including a time period for processing an item. The method may also include placing the plurality of items into the queue based on the computed code of each item.

Abstract: Monitoring a level of utilization is provided. A threshold is determined based, at least in part, on a count of service channels of a device. An upper boundary value of a numerical range is determined based, at least in part, on the count of service channels. A lower boundary value of the numerical range is determined based, at least in part, on the threshold. Whether a count of outstanding requests of the device is contained within the numerical range is determined. An estimated level of utilization of the device is determined based, at least in part, on the upper boundary value, the lower boundary value, the count of service channels, and the count of outstanding requests. The estimated level of utilization is reported.

Abstract: A system and method for communicating data between a first software and a second software located on first and second devices, respectively, has a hardware driver and memory associated with each device. Each communication of data from the first software to the second software allocates memory to manage data to be communicated from the first software to the second software, provides memory allocation information to the hardware driver associated with the first software, and transmits the data from the first hardware driver to the second hardware driver for delivery to the second software via the memory associated with the second software.

Abstract: Embodiments of this disclosure relate to improving solid-state non-volatile memory management. Embodiments improve the management of solid-state non-volatile memory by providing an execution manager responsible for controlling the timing of providing a request to a memory unit for execution. In embodiments, the execution manager traverses a list of received requests for memory access and dispatches commands for execution. In embodiments, if a request is directed to memory units which have reached a threshold for outstanding requests, the request may be skipped so that other requests can be dispatched for memory units which have not yet reached the threshold.

Abstract: A system, device and method for communicating between a host device and a plurality of peripheral devices wherein the communications utilize a single interface that is supported by the host. The host includes a plurality of class drivers and miniport drivers. Each of the class drivers implements functionality associated with one or more of the plurality of peripheral devices. Each miniport driver provides an interface by which one or more of the class drivers communicate with one or more of the plurality peripheral devices using class protocols, wherein the miniport drivers communicate through a single host interface supported by the host. An embedded controller interfaces with the plurality of peripheral devices using the respective native bus protocols of the peripheral devices and wherein the embedded controller interfaces with the plurality of miniport drivers using the single host interface.

Abstract: Technology is disclosed herein for compressing, encoding, and otherwise reducing the size of resource files. In at least one implementation, similarity compression is employed to reduce the size of a resource file. In another implementation, map-less encoding is employed to reduce the number of bytes used to represent a resource string. Bit-level compression is employed in another implementation to reduce the quantity of bits used to encode each character in a string. In addition, implementations are disclosed related to technology for naming strings and accelerated string location and retrieval.

Abstract: According to an embodiment of the invention, a method for operating a data processing machine is described in which data about a state of the machine is written to a location in storage. The location is one that is accessible to software that may be written for the machine. The state data as written is encoded. This state data may be recovered from the storage according to a decoding process. Other embodiments are also described and claimed.

Abstract: In accordance with embodiments, there are provided mechanisms and methods for facilitating dynamic workload scheduling and routing of message queues for fair management of the resources for application servers in an on-demand services environment. In one embodiment and by way of example, a method includes detecting an organization of a plurality of organization that is starving for resources. The organization may be seeking performance of a job request at a computing system within a multi-tenant database system. The method may further include consulting, based on a routing policy, a routing table for a plurality of queues available for processing the job request, selecting a queue of the plurality of queues for the organization based on a fair usage analysis obtained from the routing policy, and routing the job request to the selected queue.

Abstract: Systems, mediums, and methods are provided for scheduling input/output requests to a storage system. The input output requests may be received, categorized based on their priority, and scheduled for retrieval from the storage system. Lower priority requests may be divided into smaller sub-requests, and the sub-requests may be scheduled for retrieval only when there are no pending higher priority requests, and/or when higher priority requests are not predicted to arrive for a certain period of time. By servicing the small sub-requests rather than the entire lower priority request, the retrieval of the lower priority request may be paused in the event that a high priority request arrives while the lower priority request is being serviced.

Abstract: An arbiter configured to selectively grant access to a shared bus to a plurality of requestors. The arbiter includes a plurality of request shapers each configured to receive a request signal corresponding to a request, from a respective one of the plurality of requestors, to access the shared bus, a base priority signal indicating a base priority level of the respective one of the plurality of requestors, and a delta period signal indicating a counter value threshold. The counter value threshold corresponds to a threshold amount of time, and the counter value threshold is different for each of the plurality of requestors. Each of the plurality of request shapes is configured to separately output the request signal and a priority signal indicating a priority level of the request based on the base priority level, the counter value threshold, and a counter value.

Abstract: A direct memory access (DMA) engine schedules data transfer requests of a data processing system according to both an assigned transfer priority and the deadline for completing a transfer.

Abstract: A memory device includes a memory array with a plurality of memory elements. Each memory element is configured to store data. The device includes an input/output (I/O) buffer coupled to the memory array. The I/O buffer is configured to receive data from an I/O interface of a memory device controller and write the data to the memory array. The device includes a memory control manager coupled to the memory array. The memory control manager is configured to pause a program operation to the memory array in response to receiving a pause command. The memory control manager is also configured to resume the program operation in response to receiving a resume command.

Abstract: A method for configuring an electricity system including providing a first programmable electronic device, providing a further programmable electronic device adapted to communicate with the first programmable electronic device and configurable according to a first communication configuration mode which is dynamic or a static, providing a first configuration description file defining communications between the first and further programmable electronic devices according to a second communication configuration mode opposite to the first mode, and processing via computer the first file to convert it into a converted configuration description file defining communications configuration between the first and further programmable electronic devices according to the first mode.

Abstract: An apparatus, system, and method are disclosed for managing operations for data storage media. An adjustment module interrupts or otherwise adjusts execution of an executing operation on the data storage media. A schedule module executes a pending operation on the data storage media in response to adjusting execution of the executing operation. The pending operation comprises a higher execution priority than the executing operation. The schedule module finishes execution of the executing operation in response to completing execution of the pending operation.

Abstract: Systems, mediums, and methods are provided for scheduling input/output requests to a storage system. The input output requests may be received, categorized based on their priority, and scheduled for retrieval from the storage system. Lower priority requests may be divided into smaller sub-requests, and the sub-requests may be scheduled for retrieval only when there are no pending higher priority requests, and/or when higher priority requests are not predicted to arrive for a certain period of time. By servicing the small sub-requests rather than the entire lower priority request, the retrieval of the lower priority request may be paused in the event that a high priority request arrives while the lower priority request is being serviced.

Abstract: A transaction routing device (e.g. an interconnect) for routing transactions in an integrated circuit includes arbitration circuitry for performing arbitration between a plurality of candidate transactions using attribute values associated with the candidate transactions. Candidate transactions are selected for routing to a destination device in dependence on the arbitration. In a cycle in which a new candidate transaction is received, the arbitration is performed using a default attribute value as the attribute value for the new transaction. Meanwhile, the actual attribute value is stored to an attribute storage unit. In a following processing cycle, if the new candidate transaction has not yet been selected for muting, then the arbitration is performed using the actual attribute value stored in the storage unit.

Abstract: A SAS expander configured to operate as a SAS expander hub receives IO requests from a plurality of connected SAS expanders. Each SAS expander determines if it is capable of servicing a received IO request and sending such IO requests to the SAS expander hub if necessary. The SAS expander hub relays the IO requests to SAS expanders connected to data storage devices capable of servicing such IO requests.

Abstract: A system for implementing a virtual Universal Serial Bus (USB) compound device with a simulated hub enables a single physical USB device, such as a USB peripheral device, to expose multiple stand-alone functions on the USB bus. Logical functions on the single physical USB device can be added and removed dynamically without re-enumerating the entire device and without affecting the state of other functions. Logical functions can also be independently implemented on any of a number of processors in a system that has access to the USB hardware. Each processor can enumerate as one or more USB devices via the virtual hub. Initialization of logical functions can be performed via the virtual USB hub to maintain a charging current level from a USB host in a device having a discharged battery.

Abstract: Various embodiments of the invention provide resource management of available data bandwidth of a SAS system in a non-uniform way. In certain embodiments, arbitration wait time values are adaptively modified to achieve a specified performance quota for a link.

Abstract: An access method includes: obtaining, by a computer, a result of monitoring a busy rate and a number of access operations per unit time of a storage device, the storage device having a first storage area and a second storage area; calculating a characteristic of correlation between the busy rate and the number of access operations per unit time based on the result; calculating a second number of access operations per unit time based on the characteristic of the correlation such that a sum of a first busy rate corresponding to a first number of access operations per unit time and a second busy rate corresponding to a second number of access operations per unit time becomes equal to or lower than a given busy rate; and controlling a number of operations to access the second storage area per unit time based on the second number of access operations.

Abstract: The present disclosure relates to a method for enabling a virtual processing unit to access a peripheral unit, the virtual processing unit being implemented by a physical processing unit connected to the peripheral unit, the method comprising a step of transmitting to the peripheral unit a request sent by the virtual processing unit to access a service provided by the peripheral unit, the access request comprising at least one parameter and an identifier of the virtual unit, the method comprising steps, executed by the peripheral unit after receiving an access request, of allocating a set of registers to the virtual unit identifier received, storing the parameter received in the register set allocated, and when the peripheral unit is available for processing a request, selecting one of the register sets, and triggering a process in the peripheral unit from the parameters stored in the selected register set.

Abstract: A storage system includes: an access path management unit managing a state of each access path for each logical disk; an I/O speed calculation unit storing, for each of the access paths, a data size and required time obtained when an I/O is executed, and calculates an I/O speed for every calculation cycle; a path candidate selection unit selecting an access path in the available state as an I/O use candidate; and a path candidate exclusion unit which excludes access paths of which speed is slow from the candidates, using a highest speed value among the speed values of the access paths selected as candidates, and the access path management unit sequentially changes the states of the access paths, out of the remaining candidates, to the I/O use states, in order of the I/O speed from the fastest until the number of access paths reaches the maximum number of paths.

Abstract: An access control apparatus which establishes a connection based on connection establishment requests from connected devices and controls accesses to a connection target device. The access control apparatus includes a connection information managing unit which manages connect wait conditions to the connection target device of the connected devices based on criterion information in a connection request transmitted from the connected devices and determination for selecting one connected device from the connected devices. The access control apparatus includes a selecting unit which selects one of the connected devices which has a delay tendency related to connection based on adjustment information which is set in accordance with the connect wait conditions of the connected devices and increases a delay tendency in connection of the connected device, and a determining unit which determines the connected device selected by the selecting unit as one to be connected to the connection target device.

Abstract: Methods and systems for migrating data between storage tiers may include various operations, including, but not limited to: determining at least one activity index of at least one data storage region; receiving an input/output request addressing at least one data segment included in the at least one data storage region; qualifying a data segment addressed by the input/output request for migration to at least one higher-performing storage device; and adding a data segment reference associated with a qualified data segment to a priority queue according to the at least one activity index.

Abstract: A method to adjust a multi-path device reservation by supplying a computing device and a storage controller interconnected with a communication link. The method further reserves a data storage device in communication with the storage controller, where that data storage device reservation is held by a first communication path group comprising a first plurality of communication paths configured in the communication link. If the method detects a failed communication path configured in the first communication path group, the method configures a second communication path group by removing the failed communication path from the first communication path group, wherein the second communication path group maintains the data storage device reservation.

Abstract: Systems and methods for scanning ports for work are provided. One system includes one or more processors, multiple ports, a first tracking mechanism, and a second tracking mechanism for tracking high priority work and low priority work, respectively. The processor(s) is/are configured to perform the below method. One method includes scanning the ports, finding high priority work on a port, and accepting or declining the high priority work. The method further includes changing a designation of the processor to TRUE in the first tracking mechanism if the processor accepts the high priority work such that the processor is allowed to perform the high priority work on the port. Also provided are computer storage mediums including computer code for performing the above method.

Abstract: Audio visual or other equipment modules in a common enclosure are controlled through an SNMP control agent by interrogating module locations for the presence of an equipment module; determining an equipment type; determining a list of available control objects associated with that equipment type; associating values identified by equipment type and by control parameter with the control objects of equipment modules to be controlled; and communicating said values across a network.

Abstract: There is provided a request arbitration apparatus for arbitrating a plurality of request holding sections which hold requests having priorities when the requests are output from the plurality of request holding sections to the output device. The request arbitration apparatus includes: a setting section that sets the request holding section, which holds the highest priority request among all the requests held by the plurality of request holding sections, as a highest priority request holding section; and a control section that controls the highest priority request holding section so that the request held first among all the requests held by the highest priority request holding section is output to the output device.

Abstract: In one embodiment, a node in a computer network may receive data of a particular type at a first frequency (e.g., a sensor in a sensor network), and may correspondingly determine whether there is at least one interested subscriber for the data of the particular type, where the interested subscriber desires the data at a second frequency. If there is an interested subscriber, buffered data publishing may be dynamically activated at the node in response to a ratio between the second and first frequencies being less than a configured threshold. In particular, buffered data publishing comprises buffering the received data and transmitting a latest received data to the interested subscriber at the second frequency.

Abstract: A method for communication between an initiator system and a block storage cluster may include receiving a first input/output (I/O) request from the initiator system. The method may also include sending a referral response from a first storage system included in a plurality of storage systems of the block storage cluster to the initiator system when data associated with the first I/O request is stored in more than one storage system of the plurality of storage systems of the block storage cluster. Additionally, the method may include directing a referral I/O to the first storage system and the second storage system for transferring data to or transferring data from the first storage system and the second storage system, and transferring data associated with the referral I/O to or transferring data associated with the referral I/O from the first storage system and the second storage system.

Abstract: A communication system including a resource and an arbiter. The resource is shared among a plurality of requestors such that, at any given time, only one of the plurality of requestors has access to the resource. The arbiter is configured to receive a request from each of the plurality of requestors to access the resource, in which each request has a priority level associated with the request. The arbiter is further configured to age each request at a different rate relative to that associated with another request, and grant each requestor access to the resource based on i) the priority level and/or ii) the age of the request corresponding to the requestor.

Abstract: The present disclosure relates to a method for enabling a virtual processing unit to access a peripheral unit, the virtual processing unit being implemented by a physical processing unit connected to the peripheral unit, the method comprising a step of transmitting to the peripheral unit a request sent by the virtual processing unit to access a service provided by the peripheral unit, the access request comprising at least one parameter and an identifier of the virtual unit, the method comprising steps, executed by the peripheral unit after receiving an access request, of allocating a set of registers to the virtual unit identifier received, storing the parameter received in the register set allocated, and when the peripheral unit is available for processing a request, selecting one of the register sets, and triggering a process in the peripheral unit from the parameters stored in the selected register set.

Abstract: A direct memory access (DMA) engine schedules data transfer requests of a system-on-chip data processing system according to both an assigned transfer priority and the deadline for completing a transfer. Transfer priority is based on a hardness representing the penalty for missing a deadline. Priorities are also assigned to zero-deadline transfer requests in which there is a penalty no matter how early the transfer completes. If desired, transfer requests may be scheduled in timeslices according to priority in order to bound the latency of lower priority requests, with the highest priority hard real-time transfers wherein the penalty for missing a deadline is severe are given the largest timeslice. Service requests for preparing a next data transfer are posted while a current transaction is in progress for maximum efficiency. Current transfers may be preempted whenever a higher urgency request is received.

Abstract: A self programming slave device controller is described which comprises interface circuitry and control circuitry. The interface circuitry is responsive to one or more configuration parameters to communicate data between the slave device controller and a slave device in accordance with the one or more configuration parameters. The control circuitry is responsive to one or more operating parameter signals indicative of one or more operating parameters influencing current performance characteristics of the slave device to set the one or more configuration parameters so as to control an access operation for accessing the slave device to accommodate the current performance characteristics of the slave device. In this way, an access operation can be conducted efficiently and reliably having regard to the current performance characteristics of the slave device.

Abstract: A memory control apparatus generates a plurality of commands whose unit of data transfer is smaller than the unit of data transfer of a memory access request, and when the memory access requests are transmitted from a plurality of request sources, issues the plurality of commands to a memory in alternate order for each request source. The plurality of memory access requests are executed by time division and concurrently.

Abstract: The storage system includes a first storage subsystem having a first logical volume to be accessed by a host computer, and a second storage subsystem connected to the first storage subsystem and having a second logical volume to be mapped to the first logical volume. The first storage subsystem includes a memory having definition information for defining a plurality of logical paths that transfer, to the second logical volume, I/O from the host computer to the first logical volume, and a transfer mode of the I/O to the plurality of logical paths. At least two or more logical paths among the plurality of logical paths are defined as active, and the controller transfers the I/O to the at least two or more logical paths set as active.

Abstract: Method of processing data of at lease one data stream, data processing module for processing at a of at least one data stream, data processing system comprising such module, computer program product, data storage system and method of use thereof. For a time-based transfer of data to or from a device, data streams may be given a system ID and it is proposed to dynamically distribute available stream IDs. The proposed concept provides for indicating a type of data stream, providing and/or handling a set of stream IDs comprising a number of stream IDs and issuing a stream ID from the set of stream IDs to the data stream depending on the type of data stream. In a preferred embodiment, it is proposed to reserve one stream ID for an audio-video request, characterized by having no error handling time available. A further stream ID may be reserved for best effort requests.

Abstract: An information processing apparatus configured to control communications of a plurality of devices via a common communication channel on the basis of predetermined priority levels of the devices includes a changing unit configured to change the priority level of a predetermined device, which is one of the plurality of devices, having a first priority level to a second priority level for a predetermined amount of time and a controlling unit configured to control the length of the predetermined amount of time.

Abstract: An arbiter in a communication system including a plurality of request shapers in communication with a plurality of requestors. Each request shaper is configured to receive a request for access to a resource of the communication system, initially assign a priority level to the request upon receipt of the request, increase an age of the request, after increasing the age of the request, compare the age of the request to a delta period value associated with the respective requestor, and repeatedly increase the priority level of the request based on the comparison. Each of the plurality of requestors has a corresponding delta period value that is different from that of other ones of the plurality of requestors. An arbiter core is configured to grant one of the plurality of requestors access to the resource based on the priority level of each request and the age of each request.

Abstract: A closed-loop system for dynamically distributing memory bandwidth between real-time components and non-real-time components is provided. Specifically, the present invention includes monitors for measuring a performance of each of the real-time components. Based on the measured performance, closed-loop feedback loop is communicated to a unified memory system. The feedback is used by the memory controls within the unified memory system to efficiently and dynamically distribute memory bandwidth between the real-time and the non-real-time components.

Abstract: A computerized data storage system and a method for portioning performance among data areas on a hard disk drive. The system includes a management computer coupled to one or more host computers and a storage apparatus. The storage apparatus includes hard disk drives and a storage controller for partitioning the hard disk drives among data volumes in the storage apparatus and for assigning the data volumes to the host computer. A performance partitioning module utilizes a queue management table for forming a number of queues on memory of the hard disk drive. The queues receive READ and WRITE requests and convey these requests to data areas assigned on recording media of the hard disk drive. After a request from a queue is executed, a gate between the queue and the data areas may be closed to allow requests from other queues an opportunity to access the data areas.

Abstract: According to one embodiment, a content processing apparatus has an interface circuit connected to one or more external devices, and a control circuit which executes plural kinds of content processing to access the one or more external devices simultaneously and in parallel. The control circuit includes a CPU configured to set an order of priority for plural kinds of content processing, and limit processing operation sequentially from lower priority content processing, as load increases and disables simultaneous parallel execution of plural kinds of content processing.

Abstract: A control mechanism for data bus communications employs channels to which bus transactions are assigned, each channel having independent flow control. The control mechanism enforces an ordering algorithm among channels, whereby at least some transactions may pass other transactions. Channel attributes are programmable to vary the ordering conditions. Preferably, each channel is allocated its own programmable buffer area. The control mechanism independently determines, for each channel, whether buffer space is available and enforces flow control independently for each channel accordingly. Flow control is preferably credit-based, credits representing buffer space or some other capacity of a receiver to receive data. Preferably, the flow control mechanism comprises a central interconnect module controlling internal communications of an integrated circuit chip.

Abstract: In certain, currently available data-storage systems, incoming commands from remote host computers are subject to several levels of command-queue-depth-fairness-related throttles to ensure that all host computers accessing the data-storage systems receive a reasonable fraction of data-storage-system command-processing bandwidth to avoid starvation of one or more host computers. Recently, certain host-computer-to-data-storage-system communication protocols have been enhanced to provide for association of priorities with commands. However, these new command-associated priorities may lead to starvation of priority levels and to a risk of deadlock due to priority-level starvation and priority inversion. In various embodiments of the present invention, at least one additional level of command-queue-depth-fairness-related throttling is introduced in order to avoid starvation of one or more priority levels, thereby eliminating or minimizing the risk of priority-level starvation and priority-related deadlock.

Abstract: According to one embodiment, a content processing apparatus has an interface circuit connected to one or more external devices, and a control circuit which executes plural kinds of content processing to access the one or more external devices simultaneously and in parallel. The control circuit includes a CPU configured to set an order of priority for plural kinds of content processing, and limit processing operation sequentially from lower priority content processing, as load increases and disables simultaneous parallel execution of plural kinds of content processing.

Abstract: When four access request origins A, B, C, and D are present, a priority table (No. 1) having a priority order of A, B, C, and D, a priority table (No. 2) having a priority order of B, D, A, and C, a priority table (No. 3) having a priority order of C, A, D, and B, and a priority table (No. 4) having a priority order of D, C, B, and A are prepared. An order of employing these tables is determined in advance in this order. A priority table next in the order to the priority table employed in last arbitration or, when a priority table at the bottom in the order is employed in last arbitration, a priority table at the top in the order is employed. Based on the priority levels defined in the employed priority table, an access request to be accepted is selected.