85results about How to "Reduce read and write operations" patented technology

The invention discloses a local data updating method based on an erasure code cluster storage system, which comprises the following steps: receiving a data D0 updating request sent by a user; updating a data D0 into a data D0'; sending the data D0' to a data node to be updated; reading the data D0' from a local disc to a memory by the data node to be updated; calculating a provisional data block set needed by m redundant nodes in the memory of the data node to be updated; writing the data D0' into the local disc by the data node to be updated; sending m provisional data blocks onto the m redundant nodes by the data node to be updated through the network at the same time; reading an original redundant data Pj by the j redundant node from the local disc, and calculating to obtain a new check data Pj'; and writing the check data block Pj' obtained through calculating into the local disc by the redundant node. Due to the adoption of the local data updating method based on the erasure code cluster storage system, the consumption of the bandwidth can be reduced effectively, the load pressure of the update server can be decreased, and the data updating performance can be improved.

The invention discloses an address mapping method for a flash translation layer of a solid state drive. The method comprises the following steps of (1) establishing a cached mapping table, a cached split table, a cached translation table and a global translation directory in an SRAM (static random access memory) in advance; (2) receiving an IO (input/output) request, turning to a step (3) if the IO request is a write request, otherwise turning to a step (4); (3) preferentially and sequentially searching the tables in the SRAM for the hit condition of the current IO request, finishing write operation according to hit mapping information, and caching the mapping information according to a hit type and a threshold value; (4) preferentially searching the tables in the SRAM for the hit condition of the current IO request, and finishing read operation according to the hit mapping information in the SRAM. The method has the advantages that the random write performance of the solid state drive can be improved, the service life of the solid state drive can be prolonged, the efficiency of the flash translation layer is high, the hit ratio of address mapping information in the SRAM is high, and less additional read-write operation between the SRAM and the solid state drive Flash is realized.

The invention discloses an interleaving and rate matching method. A correction interleaving mode is determined according to a column interleaving mode and head filling bits, an interleaving operator is determined according to the correction interleaving mode, and the interleaving operator is utilized to perform interleaving processing on subblock interleaving matrices in sequence; one mode can utilize the interleaving operator to perform the interleaving processing on bits required to be output in the subblock interleaving matrices according to the requirement of redundancy version, directly output subblock interleaving results after protocol sorting while completing the interleaving of subblocks until meeting the corresponding requirement of the code rate; and the other mode can utilize the interleaving operator to perform the interleaving processing on the subblock interleaving matrices one by one, output the subblock interleaving results after protocol sorting to a circulating buffer while completing the interleaving of subblocks, and then output corresponding bits after the interleaving according to the requirement of the redundancy version. Furthermore, the invention also discloses a de-interleaving and rate de-matching method corresponding to the interleaving and rate matching method. The methods can greatly reduce buffers to be used and read-write operation of the buffers in the interleaving and rate matching and de-interleaving and rate de-matching processes.

The invention relates to a firefox starting acceleration method. Before a step of starting a firefox program or after the step (21) of starting the firefox program and before a step (22) of initializing, the method comprises a step (20) of moving files, except system files, required by starting into a memory, so that the firefox can be started in the memory. In the firefox starting acceleration method, four aspects, such as compiling optimization, configuration optimization, starting cache file storage and moving of the files required by starting, of the firefox are started in the memory to optimize a starting process of the firefox on a linux platform, so that input/output (I/O) reading and writing operations during starting of the firefox can be reduced greatly, thus the firefox starting speed can be increased effectively.

The invention provides a method and system for achieving user port VLAN service management in an ONU. The method includes the steps that operation is carried out on related service hardware and logic according to VLAN service configuration data attribute tables, and the VLAN service configuration data attribute tables are saved in a first memory space of the ONU; a new table is formed according to VLAN service configuration data issued by a gateway and saved in a second memory space of the ONU; the related service hardware and logic and the VLAN service configuration data attribute tables in the first memory space are updated according to comparison results between table data in the first memory space and table data in the second memory space so as to bring service configuration into effect. By comparing new configuration and original configuration first according to the configuration data issued by network management software and then determining a next action according to marked content, user port VLAN service configuration and deletion can be efficiently achieved, VLAN service configuration states can be tracked comprehensively, specific requirements for hardware forms are avoided, and the method can be simplified and is short in implementation cycle.

Methods and apparatuses for search are provided and related to the field of search technology. A method may include: performing term segmentation for grabbed documents to count a term frequency of each term, the term frequency of the term representing a number of the grabbed documents containing the term; generating a high frequency term inverted index and a low frequency term inverted index respectively, wherein the high frequency term inverted index contains terms having a term frequency higher than a predefined threshold, and the low frequency term inverted index contains terms having a term frequency not higher than the predefined threshold; and loading the high frequency term inverted index and the low frequency term inverted index respectively to different retrieval modules, the different retrieval modules respectively corresponding to mutually independent storage devices.

The invention discloses hard disk storage equipment integrated with a battery and a DRAM. The method comprises steps as follows: the DRAM (dynamic random access memory) is integrated with a traditional hard disc or a solid hard disc, a rechargeable battery is used for supplying battery, the traditional hard disc or the solid hard disc is adopted as a back-up permanent storage device, and the DRAM is ordinarily adopted as a main storage component. When the power is cut off or the data size stored in the DRAM exceeds a pre-set threshold value, the data in the DRAM is written in the traditional hard disc or the solid hard disc. Compare with the prior art, the hard disk storage equipment has the advantages that data writing and reading speed is quick, the hard disc service life is prolonged, and data loss and physical damage caused by unexpected power failure can be avoided. The invention discloses a hard disc storage device integrated with battery and DRAM.

The invention discloses a method for analyzing a CONSTANT_Classref constant of a CAP file pool assembly. The method includes retaining an original value of the class_offset in the class_export_info of a leading out assembly of a JCRE system package and a downloading package; if the CONSTANT_Classref constant in the constant pool assembly is of a category other than the package, finding a package index of the package through a package_token item, storing the package index to replace the package_token item, enabling the highest position of the package index to be 1, retaining the value of the class_token item, replacing a constant pool index in a byte code operand with the value of the analyzed constant during reference position assembly analysis, finding a leading out assembly of the package through the package index during virtual machine explanation execution, directly reading the value of the class_offset from the corresponding class_export_info according to the class_token, and meanwhile finding a similar assembly head address of the package can be found through the package index. The absolute address of the category can be obtained through calculation according to the obtained deviation value.

The invention provides a method and device for reading and processing raster data, and relates to the technical field of space information services. The method comprises the following steps of separating a buffer into N buffer raster blocks in a server in advance, wherein the N buffer raster blocks are used for storing data of the N raster blocks; according toiming at the N buffer raster blocks, building a memory database, and generating a corresponding memory recording table, wherein the memory recording table is used for recording the use information of each buffer raster block; then, receiving a request for reading raster data from a client; and inquiring the memory recording table to judge whether the requested raster block data exist or not, wherein, if the requested raster block data exist, reading the raster block data are read from the buffer raster blocks and returneding the raster block data to the client, and if the requested raster block data do not exist, extracting the corresponding raster block data are extracted from a disc, and are storeding the corresponding raster block data into an empty buffer raster block or are alternatively selecteding to enter one buffer raster block, updating the records in the memory are updated, and returning the raster block data are returned to the client. The method and the device have the advantages that the processing efficiency of the raster data is improved, and the system resource is saved.

The invention relates to a data processing technology and discloses a real-time massive data index construction method and system. The method comprises the following steps: writing data records generated in real time into a first memory in an appending manner; and writing the data stored in the first memory into a historical data file periodically, and constructing an index of the historical datafile in a second memory. The method and system provided by the invention can be used for rapidly constructing the index with high efficiency so as to meet the requirement of quick query.

The present invention relates to the computer technology field, and discloses a method for texture combination of model data. The method comprises the following steps: (1) performing peak combination to form the model data of one node when a plurality of model data nodes on the model data construct the hierarchy of a pyramid upwards; (2) performing peak combination of the model data, performing combination of the textures corresponding to the model data, obtaining the original texture information, and obtaining the target texture information; (3) employing a texture putting strategy to put the original texture on the concrete position of the target texture according to the texture coordinate information obtained through the calculation in the step (2), and determining the matching of the width and the height; and (4) in the texture combination process, performing preprocessing of the original texture, wherein the target texture putting rule is that the target textures are putted in from left to right until the combination is completed. According to the invention, the problems are solved that the number of the files is big and the reading and writing are frequent, and the scheduling and drawing cost is reduced.

The invention discloses an intelligent road passing RFID (radio frequency identification device) card reader-writer. The card reader-writer comprises a wireless positioning module, a vehicle passing card reader-writer and a lane charging system. The vehicle passing card reader-writer is provided with a microprocessor, a built-in power module, a toll station information read-write module, a path identification module, a positioning and managing module and a communication module inside. Compared with the existing highway passing card reader-writer, the card reader-writer is provided with the vehicle passing card reader-writer and the lane charging system, the reader-writer can only be used in specific positions by locking read-write of the reader-writer, specific position coordinates are automatically overlapped during each read-write, updating of the existing reader-writer for management is achieved, by the intelligent card reader-writer, charging can be performed to specific coordinates at an entrance and an exit, a charging managing function is improved, passing card read-write outside a toll station can be reduced or prevented, and toll avoidance can be reduced.

The invention relates to an image processing technology, and discloses a statistical method of an image histogram and a system thereof. In the method and the system, identical continuous pixels are compressed in advance by means of run length encoding according to the characteristic that the identical continuous pixels exist in original image pixel data, histogram statistics of the identical continuous pixels can be finished in every operation, and the reading and writing operation steps of histogram statistics are reduced, so that the time and power consumption of histogram statistics are reduced greatly. Moreover, run length encoding is performed during acquisition of the original image pixel data, so that idle resources of a system can be utilized fully.

The invention relates to the field of data management, and discloses a method and a device for realizing the transaction of a data storage system, which can reduce the reading and writing operations of a memory, increase the space utilization rate of the memory and improve the transaction processing efficiency. The method provided by the invention comprises the following steps of: at the transaction begin of the data storage system, determining the storage position of data corresponding to a transaction operation, executing the transaction operation, and simultaneously modifying a state identifier corresponding to the storage position from a normal state to a temporary state; and at the end of the transaction, modifying the state identifier corresponding to the storage position from the temporary state to the normal state, wherein the storage position is in a memory space and used for storing data; and the state identifier is used for identifying the state information of the data at the storage position.

The invention provides a key frame processing method. The key frame processing method comprises the steps that a key frame is extracted from a video file; metadata of the key frame are obtained; a key frame index file is generated in a preset file storage format by the utilization of the key frame and the metadata of the key frame. In addition, the invention provides a key frame processing system. According to the key frame processing method and system, the multiple key frame data and the related metadata are stored to be the single file with the index information, and therefore read-write operation of the system storage is reduced, the system performance is improved, the file is managed and backed up conveniently, and the efficiency of obtaining the key frame information is ensured.

The invention provides a magnetic random access memory with an error correction and compression circuit. The magnetic random access memory comprises a memory cell array, an error detection and correction circuit, a compression and decompression circuit, a control circuit, a status bit cache and a data cache, the reading operation steps of the chip are as follows: obtaining first compressed data inthe memory cell array, processing the first compressed data through the error detection and correction circuit, decompressing the processed first compressed data through the compression and decompression circuit to obtain first data, and outputting the first data; and the chip performs the following writing operation steps: compressing second data to be written through the compression and decompression circuit to obtain second compressed data, processing the second compressed data through the error detection and correction circuit, and writing the processed second compressed data into the memory cell array.

The invention discloses a data processing method. The method comprises the steps of obtaining an original data block, segmenting and compressing the original data block to obtain a corresponding variable-length data block, continuously storing and aggregating the variable-length data blocks into a storage block unit, and storing the variable-length data blocks in the form of the storage block unit. The invention further discloses data processing equipment and a computer readable storage medium. According to the invention, the use efficiency of the storage space can be improved, so that the storage space required for data storage is reduced.