789results about How to "Improve writing efficiency" patented technology

A system integrates an intelligent storage switch with a flexible virtualization system to enable efficient service of file and block protocol data access requests for information stored on the system. A storage operating system executing on a storage system coupled to the switch implements the virtualization system to provide a unified view of storage to clients by logically organizing the information as named files, directories and logical unit numbers. The virtualization system is illustratively embodied as a file system having a write allocator configured to provide a flexible block numbering policy that addresses volume management capabilities, such as storage virtualization, at a finer granularity (e.g., a single block) than that of previous non-flexible storage virtualization schemes. The flexible block numbering policy also yields substantial benefits in terms of increased write efficiency and elimination of storage “hot spots”, as well as a compelling point-in-time read-only data image (snapshot) mechanism.

The invention discloses a method for storing a mass of small files on the basis of a master-slave distributed file system, and aims to solve the problem about storing the mass small files in the master-slave distributed file system. The technical scheme includes that the method includes that a mass small file storage system is deployed and initialized, and then small files are created and read by a SmallFileAPI (small file-application program interface) of a client side according to a command received from a keyboard. When the small files are created by a system, the SmallFileAPI creates data files of the small files according to small file paths obtained from the client side, writes in small file data and simultaneously creates small file indexes at data nodes; when the small files are read by the system, data node information corresponding to a parent directory is acquired according to the small file paths, an index request is transmitted to any of the data nodes, and finally the small file data are read from the data files according to index information. By the aid of the method, the problem about mass of storage metadata of the mass of small files is solved, writing efficiency of the mass small file storage system is improved, and reliability of the system is guaranteed.

The invention provides a mass small file processing method based on an HDFS (Hadoop Distributed File System). The method comprises the following steps of generating a file ID (Identifier) through small file filtration and metadata reading to complete preprocessing on files; opening up a memory cache region; building a file uploading queue; performing time-delay storage on the files; merging the small files into a Mapfile file of a <key, value> structure in the cache region to be stored; storing file metadata into a distributive database Hbase, wherein the Hbase realizes the persistence in the HDFS; expressing the file status by a Status flag bit to complete operations such as fast reading of the small files of the cache region and Mapfile fragment merging, so that the real-time insert update and delete operation of the HDFS on the small files can be supported. The method has the advantages that the reading efficiency of the HDFS on the small files is improved, so that the system supports the real-time update operation on the small files, and the integral performance of the system is improved.

The present invention provides a program upgrading device based on a vehicle Ethernet framework and a control method thereof, a vehicle, a computer device and a computer readable storage medium. The device comprises a controller, an Ethernet gateway, a plurality of domain controllers and a plurality of electronic controllers. The Ethernet gateway is connected with the controllers and the domain controllers through the Ethernet; the domain controllers are connected with the electronic controllers through the Ethernet or a CAN bus; the controllers are configured to determine whether any one electronic controller satisfies an upgrading condition or not according to the whole vehicle network information, the program is sent to the Ethernet gateway when any one electronic controller satisfies the upgrading condition; and the Ethernet gateway is configured to receive the program, and the program is flashed to any one electronic controller through passing through the domain controllers according to the DOIP protocol. The fusion of the flashing schemes between the Ethernet and the CAN and the flashing of multiple electronic controllers are realized.

The invention discloses a data processing method of a database. The data processing method comprises the following steps that a main node servo receives a data processing request of a client, wherein the data processing request comprises a data storage request; the main node server receives data to be stored; the main node server extracts various field values of one field of the data to be stored, calculates corresponding hash values and determines a storage position corresponding to each hash value; the main node server transmits the data to be stored and the hash values to a data node server; the data node server stores line data corresponding to the hash values into a corresponding main hard disc; and the main node server carries out mirror image back-up on the data stored in the data node server, wherein the data processing request also comprises data retrieval requests. The data processing method of the database, disclosed by the invention, is high in data processing efficiency and larger in capacity, and avoids the happening of single-site faults in a cluster.

The invention discloses a method for realizing a software phase-locked loop with an unfixed sampling frequency. The method comprises the following steps: firstly adopting an analog phase-locked loop digital controlled oscillator of the DSP period counter to obtain digital controlled oscillator output signals; then working out the phase error between the mains voltage and a reference signals in the DQ-transformation phase demodulation mode by using the digital controlled oscillator output signals as the reference signals; and establishing a closed loop transfer function secular equation of a phase-locked loop system and determining the parameters of the designed loop filter based on the digital controlled oscillator output signals and the phase error between the mains voltage and the reference signals. The invention can maintain the fixed number of the sampling points in the primitive period, and is used for repeatedly controlling various grid-connected converting devices, such as active electric filters, new energy-powered grid-connected converters and the like. By adopting the DQ-transformation phase demodulation mode, the invention can well inhibit the harmonic and unbalanced mains, resist the fluctuation of the mains voltage, and ensure the reliable operation of the phase-locked loop under the conditions of multiple mains voltage zero passage, voltage harmonics, voltage fluctuation and mains voltage imbalance.

The present invention discloses an intelligent contract execution engine JCEE based on a Java virtual machine. The JCEE allows a user to develop an intelligent contract by using a Java language and provides complete life cycle management of the intelligent contract. The JCEE is designed by using a micro-service architecture, and comprises a client and a server; and the client is responsible for receiving a call request for the intelligent contract, and the server is responsible for the implementation of a specific intelligent contract. The implementation of the JCEE comprises the following steps that: (1) the client receives a contract call request of a user and checks the completeness of the request; (2) the client encapsulates and delivers the secure user request to the JCEE server; and (3) the server carries out security check on the contract, a specific request is implemented on secure implementation request call actuators, and the implementation results are returned. The present invention provides a brand-new intelligent contract execution engine design scheme, which solves the problems of insufficient universality, low performance and the like of existing intelligent contract execution engines.

A block management method for a flash memory chip having multiple planes is provided, wherein each plane has a plurality of physical blocks. The method includes disposing a plurality of physical units, wherein each physical unit includes a physical block of each plane, and the physical blocks in the physical unit have a simultaneously-operable relationship. The method also includes writing data in a single plane access mode when a host system does not update all the physical blocks in an updated the physical unit. The method further includes writing the data in a multi-planes access mode when the host system updates all the physical blocks in the updated physical unit, wherein the physical blocks for writing the data have the simultaneously-operable relationship.

A static memory and a static memory cell are provided. The static memory cell includes a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a first switch, a second switch, a third switch, a first pull-down switch, and a second pull-down switch. When a data writing operation is performed, the latching capability of the latch circuit constituted by the first to the sixth transistors is disabled by turning off the second transistor or the fifth transistor, so that the speed of the data writing operation is increased and the data writing performance is improved. The first switch and the second switch provide a path for reading or writing data, and the third switch is coupled to a bit line for receiving data from or transmitting data to the bit line.

The invention discloses a method for writing data into an EEPROM and a device thereof; the method comprises: writing all data needed to be written into the EEPROM into a RAM; acquiring all the data from the RAM, writing the acquired data into a backup area of the EEPROM for once, and setting effective marker bits corresponding to all the data in the backup area to be effective; respectively writing the data into a target area of the EEPROM; and setting the effective marker bits to be ineffective, and erasing the data stored inside the backup area. The method and the device can ensure the datewriting to be atomicity operation and improves the efficiency for writing the data compared with the prior art.

The embodiment of the invention provides a data writing method, a data writing device, a data reading method and a data reading device. The data writing method comprises the following steps of: in continuous clock cycles, receiving data to be written into the same shared memory equipment in a plurality of pieces of shared memory equipment from a bus, and caching the data, wherein the length of the data received in each clock cycle is the data bit width of the bus, the data bit widths of the pieces of shared memory equipment are the same, and are k times that of the bus, and k is an integer more than or equal to 2; if the reception of the data to be written into the same shared memory equipment is stopped, merging the cached data according to the data bit width of the shared memory equipment; and transmitting the merged data to arbitration equipment, so that the arbitration equipment writes the merged data into the corresponding shared memory equipment according to preset arbitration rules, wherein the data bit width of the arbitration equipment is the same as that of the shared memory equipment.

The invention discloses a micro-nano fiber grating laser writing method and a micro-nano fiber grating laser writing device. The method comprises the following steps of: tapering normal multi-mode fibers; manufacturing micro-nano fibers; and then taking 193 nm ultraviolet laser as a scribing means. The device comprises a fiber clamp, and an ArF excimer laser, a 45-degree full power reflector, a cylindrical lens and a phase mask plate which are sequentially arranged, wherein the ArF excimer laser is used for emitting 193 nm ultraviolet laser; the tapered fiber is fixed on the fiber clamp; micro-nano fiber regions of the fibers are arranged in front of the phase mask plate in parallel; the 193 nm ultraviolet laser emitted by the ArF excimer laser is reflected through the 45-degree full power reflector and then vertically emitted to the cylindrical lens; and the phase mask plate is arranged in front of the cylindrical lens. According to the method and the device, extra processing for the fibers is not required, the mechanical strength and the toughness of the fibers are kept, the cost is low, the scribing efficiency is high, the bandwidth is narrow, the mode is controllable and the repeatability is high.

A write line is covered with a yoke material. The recording layer of an MTJ element is exchange-coupled to the yoke material. The total magnetic volume ΣMsi×ti of the recording layer of the MTJ element and a portion of the yoke material that is exchange-coupled to the recording layer is smaller than the magnetic volume ΣMsi′×ti′ of the remaining portion of the yoke material that covers the write line.

The invention discloses a method for quickly loading data into a database. The method includes loading data files in a parallel mode when the data files are written into the database; and directly writing the data files in a loading procedure, generating tuples and then directly writing the tuples into the data files in the database. The method has the advantages that the CPU (central processing unit) utilization rate is increased owing to a parallel thread mode, inspection for various affairs when the data files are written into the database are omitted owing to the fact that the configured data are directly written into the database, and accordingly the writing efficiency of the data files can be effectively improved.

A block management method for managing a flash memory is provided. The method includes dividing the flash memory into a cache area and a storage area and dividing the cache area into a plurality of cache sub-areas, wherein the storage area has a plurality of physical blocks and each cache sub-area contains at least one physical block. The method also includes configuring a plurality of logical blocks for mapping the physical blocks of the storage area, and allocating one of the cache sub-areas for each logical block, wherein when the host writes the data into the logical blocks, the data may be temporarily stored in the cache sub-areas allocated for the logical blocks. Accordingly, it is possible to increase efficiency of the flash storage system and avoid wearing of the physical blocks, so as to prolong a lifetime of the flash storage system.

The invention discloses a SQL statement generation method. The method comprises the following steps of when a SQL statement creation instruction of a structured query language sent by a client is received, generating and sending an SQL statement editing interface to the client for display; receiving a component selection instruction sent by a client end, determining a corresponding atomic statement, obtaining a code corresponding to the atomic statement and sending the code to the client end for displaying in a code area, and determining a statement parameter set for the atomic statement by auser based on an SQL statement editing interface; combining the code of the atomic statement with the statement parameters set in the cache area, and displaying the combined code synchronously in thecode area of the client side; repeatedly executing the above steps until an editing completion instruction sent by the client based on the SQL statement editing interface is received and generating the SQL statement according to the combined code in the cache area. The invention also provides an SQL statement generating device and a computer-readable storage medium. The invention improves the compiling efficiency of SQL statements.

The invention discloses a method, device, terminal equipment and storage medium for editing script test code. The method for editing the script test code comprises the steps that a code editing platform is run, and a code editing interface is entered into; a code query instruction input by a user is obtained, recommended code information is acquired and displayed based on the code query instruction, the recommended code information comprises at least one code function, and each code function comprises a function ID, a function name and a corresponding function content; a code selection instruction input by the user is acquired, and the code selection instruction comprises a target function ID and/or a target function name; the function content corresponding to the target function ID and/orthe target function name is added into the code editing interface to form an edited code. The method for editing the script test code has the advantage that the check and use of the test script codecan be realized in a script test code editing process, and is beneficial to improving the efficiency of the script test code editing.