11results about How to "Improve write performance" patented technology

The invention discloses a traceability application-oriented block chain database data management system, particularly relates to the technical field of block chain database data management, and is used for solving the problems of easy data tampering and low verification efficiency caused by traceability data logic association and physical storage splitting. The method comprises the following steps: firstly, matching a parent physical sector offset through an association analysis module, determining a storage partition, and assembling a write-in instruction; then, a topology binding module executes a disk write operation, synchronously reads parent node hash and performs combinatorial operation in combination with a physical address to generate a topology binding check value bound with the physical position; the aggregation anchoring module uses a Merkel tree aggregation check value to generate a root fingerprint and perform uplink, and establishes an anchoring voucher; and finally, a path verification module positions a physical position according to the certificate, executes reverse recursive addressing and step-by-step Hash recalculation, and assembles a pedigree verification packet, so that a closed-loop trust system from physical storage to chain certificate storage is constructed, and the tamper-proof capability and verification efficiency of the traceability data are improved.

This invention provides a redundant array management method and system based on ZNS solid-state drives, comprising: for each stripe, upon receiving a write request, sequentially writing the data to be written into the corresponding data blocks, and overwriting and updating the check data of the check block; positioning the logical actual write pointer to the tail position of the consecutively successfully written data blocks, generating metadata corresponding to each data block, and writing the metadata into a spare area; the logical actual write pointer is used to point to the next writable position within the logical area; in the event of a failure, repositioning the logical actual write pointer based on the metadata in the spare area; based on the repositioning of the logical actual write pointer after the failure, discarding the data blocks outside the logical actual write pointer, restoring the data blocks within the logical actual write pointer, and recalculating and generating check data to complete the redundant array management of the ZNS solid-state drive.

The application provides a log processing method of a database, a storage medium and equipment. The log processing method comprises: obtaining log configuration information, and determining whether log configuration has been completed according to the log configuration information; if not, assigning a preset level to a log entry to be written; generating an entry number according to the log level; and writing the log into a pre-set shared memory according to the entry number. Therefore, even if the log configuration has not been completely parsed, the log can be written into the pre-set shared memory by assigning a preset level to the log entry, thereby avoiding the problem of log loss before the log configuration is completely parsed. Moreover, because the log exists in the shared memory, even if the program is interrupted, the log in the shared memory will not be lost, and the log that has been written in advance can still be obtained.

The application discloses a calligraphy mechanical arm control method based on stroke flow direction prediction, which comprises the following steps: collecting image information in a calligraphy mechanical arm writing area through a shooting device; collecting the image information and current time data as historical data; inputting the historical data into a preset KNN model, clustering the historical data into a plurality of clusters, each cluster containing a plurality of data samples, the number of clusters being set according to the covariance requirement in the cluster and the covariance requirement between the clusters, temporarily storing the obtained result in the KNN model, then adding current measured data to re-cluster, clustering the current measured data into the corresponding cluster, inputting n data A1-An in the cluster where the data is located and the current measured data An+1 into an LSTM model, inputting the historical data into the LSTM model to initialize the model, inputting the data A1-An+1 obtained from the KNN model into the trained LSTM model in sequence to obtain corresponding output values, and taking the weighted average of the output values as a result output.

This application discloses a data processing method, apparatus, electronic device, and computer-readable medium, relating to the field of computer technology. A specific embodiment includes: obtaining a data stream and a cluster identifier based on a received data processing request; obtaining node data corresponding to the cluster identifier; generating a first hash value based on the node data; calculating a second hash value for each data item in the data stream; determining the target node corresponding to each data item in the data stream based on the first hash value, the second hash value, and a hash ring; determining the number of data items to be written for each target node; configuring an independent connection pool for each target node based on the number; and writing each data item to the corresponding target node based on the connection pool. This improves write performance and throughput when writing data to the cluster, avoids single-point overload, ensures uniform data distribution in the cluster, increases data write speed, and shortens data write latency.

This invention discloses a mapping management method, apparatus, computer device, and storage medium for solid-state drives (SSDs). The method includes: establishing an SLC cache mapping table independent of the main mapping table; storing data written by the host in the SLC cache area and recording the mapping relationship between the logical page address and physical page address corresponding to the data in the SLC cache mapping table; when the SLC cache area meets the migration conditions, migrating the data in the SLC cache area to multiple programming data blocks and completing all programming steps for the data in the multiple programming data blocks; after confirming that the data has completed all programming steps in the multiple programming data blocks, deleting the mapping relationship corresponding to the data from the SLC cache mapping table and updating the mapping relationship to the main mapping table. By implementing the method of this invention, the performance and lifespan problems caused by dual mapping updates in existing QLC SSDs using SLC caching technology can be effectively solved.

The application relates to a storage device, a storage system and a write method of the storage device. The storage device comprises a front-end module, a back-end module, a cache module, a storage medium and a processor. The cache module is connected with the front-end module, the processor and the back-end module, the back-end module is connected with the processor and the storage medium, the cache module comprises a cache management unit, a first cache and a second cache, the capacity of the second cache is greater than or equal to that of the first cache, and the read-write speed of the second cache is less than that of the first cache. The front-end module transmits to-be-written data to the first cache. The cache management unit controls mutual transfer of the to-be-written data between the first cache and the second cache. The back-end module writes target to-be-written data into the storage medium through the first cache. The application uses the first cache with high read-write speed and the front-end module and the back-end module to form a write channel, the delay is small, the second cache with large capacity and the first cache are used to mutually transfer data to increase cache data, and the write performance is effectively improved.

The invention provides a data writing method and device, electronic equipment and a medium. The method comprises the steps that a write request sent by a client is received, the write request comprises a write-in path, and the write-in path corresponds to a target directory; according to the write request, obtaining the directory quota usage amount and the residual capacity of the target directory; if the directory quota usage amount is smaller than the usage amount threshold value and the residual capacity is larger than the preset capacity, applying for a first directory quota capacity of which the size is the preset capacity; according to the first directory quota capacity, writing to-be-written data corresponding to the writing request; and if other write requests sent by the client are received in a future preset time period, writing other to-be-written data corresponding to the other write requests into the target directory according to the first directory quota capacity.

The present application relates to a hardware acceleration method, device, computer equipment and storage medium for updating a summary page of an SSD, the method comprising: writing LPA0 by a host and allocating a physical address for writing LPA0; determining whether the current physical address is a position for writing raidparity; if not, determining whether the current physical address is a position for writing a summary page; if not, updating a mapping table and transferring information required for updating a summary page to hardware; calculating a position for storing LPA in a summary page table by hardware according to bank / page / offset in the physical address and the information required for updating a summary page, and then updating the current summary page table; and writing user data into NAND according to the updated current summary page table. The present application processes the initialization and content update of a summary page by hardware, which can improve the write performance of a system and better meet the requirements.

The application discloses a data writing method and device, equipment and a storage medium, and relates to the field of data management. The method comprises the following steps: acquiring a data update request for current target data in a new data directory sent by upper-layer software; the data update request comprises to-be-written new data and a target logical address; migrating the current target data to an old data directory to obtain first target old data, and newly creating a mapping relationship between the first target old data and the target logical address in a local first mapping relationship database; performing a local writing operation on the to-be-written new data, searching for the first target old data corresponding to the target logical address from the old data directory by using the first mapping relationship database when the writing fails, and migrating the first target old data back to the new data directory to complete a data recovery operation. The application manages the old data by using the target logical address, avoids the step of managing the old data by performing a disk-falling operation on the copied metadata, and reduces the data double-writing operation.

The application provides a hybrid storage implementation method, system, storage device and management device, and belongs to the technical field of data storage. The method comprises the following steps: obtaining a data write request initiated by a client; applying for storage space to a management device according to the data write request; the management device allocates a solid state disk erasure coding group space and a mechanical hard disk erasure coding group space corresponding to the data write request at one time, and establishes a binding relationship between the solid state disk erasure coding group space and the mechanical hard disk erasure coding group space; obtaining the data size of to-be-written data corresponding to the data write request; when the data size is lower than a preset threshold, writing data into the solid state disk erasure coding group space; when the data size is higher than the preset threshold, directly writing data into the mechanical hard disk erasure coding group space. The application reduces data interaction and repeated writing, and improves data write storage performance.