33 results about "Asynchronous I/O" patented technology

The present invention implements an I/O task architecture in which an I/O task requested by the storage manager, for example a stripe write, is decomposed into a number of lower-level asynchronous I/O tasks that can be scheduled independently. Resources needed by these lower-level I/O tasks are dynamically assigned, on an as-needed basis, to balance the load and use resources efficiently, achieving higher scalability. A hierarchical order is assigned to the I/O tasks to ensure that there is a forward progression of the higher-level I/O task and to ensure that resources do not become deadlocked.

The invention discloses an intelligence education E-card system platform based on internet of things and cloud computation. The platform comprises an IaaS (Infrastructure as a Service) unit, a PaaS (Platform as a Service) unit, an SaaS (Software as a Service) unit, a data collector and a sensing terminal, wherein the IaaS unit is responsible for transferring and processing information obtained by a sensing layer by using infrastructure as service; the PaaS unit makes up a comprehensive service platform with RFID (Radio Frequency Identification) and the data communication technology by using cloud computation as a fundamental platform; the SaaS unit supports a plurality of front-end browsers and is connected to the infrastructure through connectivity access points by adopting industry-advanced technical standards and technical specifications and adopting an SOA (Service-Oriented Architecture) system structure; the data collector supports a plurality of communication protocols, applies to a plurality of communication modes, adopts an I/O (Input/Output) model-IOCP (I/O Completion Port) mode, and uses threads for pool-processing asynchronous I/O requests; and the sensing terminal comprises a POS (Point-of-Sale) machine, a building machine, a recognizing machine, multimedia, a channel machine, a vehicle-mounted machine, a water controller and other specific-purpose terminal equipment.

A network block device using a network asynchronous I/O method is provided. The network block device includes an asynchronous I/O interface for managing a plurality of socket connections; an request process unit for analyzing a request from a client through a socket, reading data from a disk and transmitting the read data to the client through the socket, and writing the data transmitted through the socket to the disk, through the asynchronous I/O interface; and a request processing unit for collecting a result event of processing an operation asynchronously requested by the request processing unit and informing the request processing unit of the collected result event, through the asynchronous I/O interface.

The present invention implements an I/O task architecture in which an I/O task requested by the storage manager, for example a stripe write, is decomposed into a number of lower-level asynchronous I/O tasks that can be scheduled independently. Resources needed by these lower-level I/O tasks are dynamically assigned, on an as-needed basis, to balance the load and use resources efficiently, achieving higher scalability. A hierarchical order is assigned to the I/O tasks to ensure that there is a forward progression of the higher-level I/O task and to ensure that resources do not become deadlocked.

A method for realizing application server of computer system includes forming linear program cell in computer system; spliting server linear program into linear program of linking, receiving and service, applying in computer linear prograum cell by most of linear program which is returned back to program cell after each data or service having been processed; storing process flow in internal memory.

The disclosed special disc read-write system with time-variable IPTV live server comprises: a media data buffer server including a channel management module, a buffer management module with memory based on tmpfs and memory file mapping, and a file read/write module with DIRECT/asynchronous I/O; and some buffer clients including the direct data write/read client, wherein the live server also comprises a data pre-process module, a transmission module and user management module. This invention improves entire system performance.

As an I/O method of issuing an I/O request, there are a synchronous I/O method, in which a task is in a waiting state until an I/O response to the I/O request is returned and an asynchronous I/O method, in which another task can be executed before an I/O response to the I/O request is returned. When issuing an I/O request in execution of a task, a DBMS selects any one of the synchronous I/O method and the asynchronous I/O method, based on an I/O response speed of an I/O destination storage device and issues an I/O request according to the selected I/O method.

One embodiment of the present invention provides a system that facilitates performing independent asynchronous I/O operations within a platform-independent virtual machine. Upon encountering an I/O operation, a language thread within the system marshals parameters for the I/O operation into a parameter space located outside of an object heap of the platform-independent virtual machine. Next, the language thread causes an associated operating system thread (OS-thread) to perform the I/O operation, wherein the OS-thread accesses the parameters from the parameter space. In this way, the OS-thread does not access the parameters in the object heap directly while performing the I/O operation.

The invention provides an optimization method for compressed uploading of a self-service terminal log. The optimization method for the compressed uploading of the self-service terminal log comprises the following steps: a client uses a displacement operating mode to carry out compression processing on the logs to be uploaded on the basis of entropy coding; the client uploads the compressed log files to the server in order in the process of compression; the server receives the compressed log files uploaded by each client; the server distributes the received compressed log files to a file saving queue and returns a normal receiving response to the client; the server detects whether abnormal information is existed in the compressed log files or not; and if no abnormal information is existedin the compressed log files, the server writes the compressed log files in the file saving queue to the disk of the server through the asynchronous I/O mode. The optimization method for the compresseduploading of the self-service terminal log effectively reduces the response time of the client waiting for the server, and improves the function experience of the self-service terminal.

The invention relates to the technical field of I/O request processing, and provides an asynchronous I/O request scheduling method and device, electronic equipment and a computer readable storage medium. The method comprises the steps that in response to a detected newly-added I/O request, I/O request time information of the newly-added I/O request is generated, and the I/O request time information comprises expected pause time and expected processing duration; predicting and setting the expected pause time and the expected processing duration of the newly-added I/O request, and caching the newly-added I/O request and I/O request time information; and in response to the detected I/O request execution operation, screening out target I/O request time information from the cached at least one piece of I/O request time information, and processing a target I/O request corresponding to the target I/O request time information. According to the embodiment of the invention, through the steps, the technical problems that the processing efficiency is reduced and errors occur when the I/O requests are operated in a large quantity in a short time can be avoided.

The invention provides an intelligent city management system based on a cloud platform. The system comprises a basic information acquisition device, a primary execution device, a secondary execution device, a ternary execution device, a primary decision device, a secondary decision device, a ternary decision device and a city cloud center, wherein the city cloud center is connected with the basic information acquisition device, the primary decision device and the secondary decision device directly or indirectly, and adopts a memory database technology, a non-relation database technology, a cache technology and an asynchronous I/O processing technology for different types of data uploaded by the devices. By unified allocation management of the multiple stages of devices, resources are further reasonably utilized, and the problems of waste and the like caused by unordered resource input are solved.

The invention relates to the technical field of network communication, and particularly discloses a socket-based asynchronous I/O operation method and device. The method comprises the following steps: a management socket creation step: creating a management socket, and binding the management socket on a local address; a proxy thread creating step: creating a proxy thread, adding the management socket into read operation control information of the I/O multiplexing function, and calling the I/O multiplexing function; and a proxy thread running step: receiving an asynchronous operation request of a user by the management socket, executing a corresponding action according to the asynchronous operation request, and then sending a message to the user thread. By adopting the technical scheme of the invention, the adaptability to the operating system can be improved.

A real-time system for bi-directional storage and transfer of control and data between a processor and an external serial peripheral device such as a tablet and/or digitizer for handwritten signatures during I/O using an external medium Used to store static data to form a transfer buffer capable of operating with said Serial Peripheral Unit which is considered a "USB drive" removable virtual disk. Only files constituted as a linear sequence of data in sectors of constant size, which can be shared between the serial peripheral unit (21) and the processor (24), are used, the serial Both the peripheral unit (21) and the processor (24) are able to read and write to the file at virtually simultaneous times. Asynchronous I/O transfers are defined with data block contents on the order of kilobytes and storage areas that are actually as large as expected, definitely larger than data packets, used as temporary buffers for data waiting to be transferred.

The invention discloses a large concurrent encrypted communication algorithm for a secure authentication gateway, related to a data security transmission method. The traditional communication encryption library adopts a synchronous processing method tightly coupling communication and encryption, which can only increase the concurrent processing by increasing the number of threads or processes; andlimited by the number of the threads and processes, the communication bandwidth of the network and the processing power of the CPU cannot be fully utilized. The large concurrent encrypted communication algorithm for the secure authentication gateway is independently implemented through network communication and SSL processing, and supports independent optimization; an asynchronous I/O mechanism of the operating system is used fully to improve the throughput processing capacity; the thread pool technology is used to make full use of the computing power of the CPU; and the queue technology is used to perform buffer processing on peak data. The main advantage of the large concurrent encrypted communication algorithm for the secure authentication gateway is that the SSL encrypted communication with high concurrency (greater than 50,000), high number of connections per second (greater than 500), high throughput (greater than 800Mb/s), and high peak impact can be realized.

The invention provides a full-bandwidth use ensuring method under the situation that concurrent asynchronous connection without being interrupted. The method comprises the steps: splitting files; distributing threads; initializing a fragment list; distributing and zooming; downloading. The full-bandwidth use ensuring method disclosed by the invention can utilize multi-thread and asynchronous I/O advantages to the maximum extent to achieve network and hardware resource maximization; based on a multi-thread connection task precedent, multi-server connection is established, and all dialogues aredivided into a plurality of fragments; meanwhile, the quickest resource holder is optimized, and a novel method is provided for the field of multi-thread downloading.