28 results about "Recovery performance" patented technology

The invention relates to a distributed file system recycle bin performance optimization method, which comprises the following steps: in the execution process of an unlink interface of a Linux file system, sequentially completing recycle bin function starting judgment, file deletability verification and recycle bin storage suitability judgment, and obtaining metadata of a target deleted file parent directory from a server; when a file system is created, a global unified root recycle bin directory is synchronously generated, and when a file is deleted, a corresponding recycle bin subdirectory is created in a target MDS based on a parent directory inode number; an atomic operation is executed through a Linux standard rename interface, the file is moved to a corresponding recycle bin subdirectory, and the operation is limited to the interior of a single MDS; when the file is recovered, extracting an inode number of a parent directory, and iteratively querying metadata to restore an original complete path; and during batch recovery, if the original catalogue does not exist or needs to be recovered to a new catalogue, directly and integrally moving the catalogue corresponding to the recycle bin, otherwise, executing recovery operation one by one. The file deletion and recovery performance is remarkably improved, the resource overhead is reduced, and the data consistency is guaranteed.

The invention discloses a data reconstruction method and device, electronic equipment and a storage medium, and relates to the technical field of data storage and recovery, and the data reconstruction method comprises the steps that under the condition that a to-be-reconstructed disk exists in a distributed storage system, the redundancy of the to-be-reconstructed disk is determined based on state data of the to-be-reconstructed disk; determining a target redundancy level corresponding to the redundancy of the to-be-reconstructed disk from a plurality of preset redundancy levels; different redundancy levels correspond to different erasure code types; the erasure code types corresponding to different redundancy levels represent different combinations of data recovery rates and storage resource occupation proportions; and switching the erasure code type of the to-be-reconstructed disk to a target erasure code type corresponding to the target redundancy level, and according to the target erasure code type, transmitting the fault data block in the to-be-reconstructed disk to a specified disk for data reconstruction. The problem that data recovery performance, resource consumption and network bandwidth resource occupation cannot be dynamically balanced in the data reconstruction process in the prior art is solved.

The application provides a long-chain error correction code encoding and decoding method, a system and a readable storage medium, and the method comprises the following steps: S1, minimizing single error cross-cabinet recovery cost through quantization, selecting a suitable data grouping strategy and data placement strategy, and determining encoding parameters; S2, sequentially encoding each dimension of three-dimensional encoding; S3, recovering data by using a decoding algorithm, preferentially using low-dimensional encoding for check recovery, and calling high-dimensional encoding for check recovery of each dimension when recovery fails. The application makes a quantitative analysis on the single error cross-cabinet recovery cost, places the cabinet level strip based on the analysis result, so that the strip crosses fewer cabinets; meanwhile, in the decoding stage of the long-chain error correction code, low-dimensional encoding is preferentially used for check recovery, high-dimensional encoding is called when recovery fails, the network topology is fully considered, the cross-cabinet recovery cost is reduced as much as possible, and then the recovery performance is improved.

The application relates to the field of food processing technology, in particular to instant freeze-dried bean curd with good recovery performance and a preparation method thereof, which comprises the following steps: soaking and swelling soybeans in ionized water, grinding to prepare raw soybean milk; adding soluble soybean polysaccharide, trehalose and palm oil into the raw soybean milk, and obtaining treated soybean milk through dynamic high-pressure microfluidization; pouring the filtered soybean milk into a pot, adding a composite salt, and cooking mature soybean milk under micro-pressure or normal pressure; wherein the composite salt comprises CaCl2, MgCl2, ZnSO4 and NaCl, and the adding amounts of the four components are 0.007%, 0.01%, 0.006% and 0.01% of the mass of the soybean milk respectively; adding an appropriate amount of coagulant into the cooled mature soybean milk, fully mixing and uniformly distributing, coagulating at a molding temperature, and obtaining fresh bean curd products; and freezing and drying the fresh bean curd products to obtain the freeze-dried bean curd.

The invention discloses an oil gas recovery equipment intelligent management method and system based on the Internet of Things, and belongs to the technical field of the Internet of Things. The method comprises the following steps: acquiring suction capacity, storage capacity and communication relation parameters of all oil and gas recovery equipment in a target area based on a cloud platform and an Internet of Things platform, constructing a schedulable equipment pair set according to a preset communication relation parameter threshold value, and calculating a theoretical collaborative efficiency index in combination with a capacity parameter and a communication parameter; generating a cross-device collaboration path set through the collaboration efficiency index; operation data such as gas flow, a negative pressure value and a recovery rate are collected in real time to calculate an equipment load rate, when the equipment load rises, scheduling equipment pairs are screened based on a collaborative path set and a path weight threshold value, and the equipment load is dynamically scheduled and balanced, so that the collaborative efficiency, the operation stability and the safety in the oil and gas recovery process are improved, and the recovery efficiency is improved. The overload risk is reduced; and the overall recovery performance is improved.

The invention discloses a fragment rewriting method in a hybrid data deduplication and differential compression backup system, which comprises the following steps of: S1, dividing a backup file into a plurality of data blocks, and calculating a fixed-length Hash abstract fingerprint for each data block; s2, grouping the continuous data blocks into a plurality of data segments; s3, according to the plurality of data segments, identifying repeated data blocks and obtaining feature values of all the data blocks; s4, matching a similar data block for each data block; s5, processing each data segment in sequence, and reversely identifying the sparse container; s6, the data blocks C are sequentially taken out from the current data segment, and the types of the data blocks C are judged; s7, reading a reference block of the C from the reference block cache, performing differential compression on the C and the reference block to generate a differential block Delta, and writing the Delta into the container; and S8, returning to the step S5 until all the data segments are processed, and generating a file spectrum. According to the method, the sparse container is identified more accurately, so that the rewritten data volume is less, and the compression ratio and the recovery performance of the system are improved.

A method, computer program product, and computer system for defining a recovery performance goal for an application. The method includes obtaining data of errors experienced by users of the application when carrying out an operation in a task; obtaining data of outcomes of the task; correlating requests and responses from the error data with an outcome of the task; determining an error duration from the requests and responses of the error data; aggregating the error duration and outcome per backend service of the application for multiple users; evaluating a recovery period based on a proportion of successful outcomes compared to an error duration for the service; and defining a recovery performance goal based on the evaluation.

The application discloses a data reconstruction method and device, electronic equipment and storage medium, and relates to the technical field of data storage and recovery. In the case that a to-be-reconstructed disk exists in a distributed storage system, the redundancy of the to-be-reconstructed disk is determined based on state data of the to-be-reconstructed disk; a target redundancy level corresponding to the redundancy of the to-be-reconstructed disk is determined from a plurality of preset redundancy levels; different redundancy levels correspond to different erasure code types; the erasure code types corresponding to different redundancy levels represent different combinations of data recovery rates and storage resource occupation ratios; the erasure code type of the to-be-reconstructed disk is switched to a target erasure code type corresponding to the target redundancy level, and the target erasure code type is used to transmit a fault data block in the to-be-reconstructed disk to a specified disk for data reconstruction, thereby solving the problem that data recovery performance, resource consumption and network bandwidth resource occupation cannot be dynamically balanced in the data reconstruction process in the related art.

The utility model relates to the technical field of composite materials, in particular to a bending recovery performance testing device which comprises a base, a clamping module and a bending module, the clamping module comprises a supporting table and a clamping piece, the bottom face of the supporting table is fixedly connected with the base, the clamping piece is arranged on the top face of the supporting table, and the bending module is arranged on the base. The clamping piece and the supporting table are used for fixing one end part of a to-be-tested sample, and a preset side wall surface of the supporting table forms a supporting surface; the bending module is in sliding connection with the base so as to be close to or away from the preset side wall surface, and the bending module moves towards the supporting table so that the to-be-tested sample can be bent to be attached to the supporting surface. Through the design, the supporting table can be matched with the clamping piece to clamp the to-be-tested sample and can also be matched with the bending module to bend the to-be-tested sample, the structure is simple, and meanwhile the bending recovery performance of the to-be-tested sample can be tested through simple operation.

This invention relates to the field of support structure technology for ancient wooden structures, specifically a friction-dissipating support structure for ancient wooden structures with a correction function. To address the problems of existing wooden support structures lacking the ability to restore the deformation of wooden columns and lacking self-recovery performance, this invention provides a new friction-dissipating support structure for ancient wooden structures with a correction function. The structure includes a wooden support member, one end of which is covered by a U-shaped fixed connecting plate hinged to a first clamp. The other end of the wooden support member is covered by an inner U-shaped connecting plate and an outer U-shaped connecting plate. A jack and a tension / compression spring are provided between the inner and outer U-shaped connecting plates. A screw and a nut are fixed to the right side of the middle arm plate of the outer U-shaped connecting plate, and a second clamp is hinged to the right side of the independent connecting plate. The friction-dissipating support structure of this invention not only achieves the friction-dissipating support function but also the correction function.

The invention discloses a PVC (polyvinyl chloride) double-wall corrugated pipe preset sealing structure, which comprises a first pipe fitting and a second pipe fitting which are sealed and fixed together through an insertion structure, and the insertion structure comprises a bell mouth arranged on the first pipe fitting and an insertion mouth arranged on the second pipe fitting. An annular fixing groove formed in the circumferential extending direction of the bell mouth is formed in the bell mouth, and a sealing ring with the elastic recovery performance is arranged in the fixing groove. By means of the integrated composite sealing ring, firstly, the elastic plastic frame structure can be directly arranged in a socket fixing groove in advance, the plastic deformation problem of a traditional steel framework is avoided, secondly, due to the design of the U-shaped notch, stress distribution is more uniform, deformation failure caused by local stress concentration in the installation process is avoided, and the service life of the sealing ring is prolonged. The purpose of saving installation procedures is achieved on the premise that the sealing strength is guaranteed.

This application relates to the field of midsole material compression testing, and discloses a device for testing the compression recovery performance of midsole materials. The device includes a worktable with a testing component, comprising an optical rangefinder and a fixed platform. It also includes a clamping component, comprising a base plate, a pressure plate, a limiting screw, and a limiting screw plate, used for compressing the midsole material; and a locking component at the end of the clamping component, comprising a locking rod rotatably disposed at one end of the limiting screw. This invention, by setting an adjustment component, adapts to the position of the adjustment frame by varying the distance the adjustment frame is pushed according to the position of the base plate, thereby controlling the engagement time of the driving blade and the driven blade, and rotating the driving rod to the required angle. Ultimately, when compressing materials of different thicknesses, it can automatically select the appropriate contact rod to effectively fix the base plate.

The invention discloses a ship system recovery method based on redundant backup, and belongs to the technical field of intelligent operation and maintenance of ships. Comprising the following steps: dividing a ship system into different function modules according to functions, and obtaining spare part statistical data involved in each function module; the spare part statistical data comprises spare part type quantity and spare part redundancy quantity; constructing a system structure recovery capability evaluation index, a system function recovery capability evaluation index and a system performance optimization evaluation index according to the number of the system function modules and the spare part statistical data, and performing weighted summation on each evaluation index so as to generate a comprehensive recoverability index for evaluating the system recoverability; and recovering the ship system based on the comprehensive recoverability index. According to the method, the recoverable performance of the system is comprehensively evaluated based on the constructed evaluation index, so that quantification of the recovery capability of the system is realized, guidance can be provided for recovery operation of the system, and the operation reliability of the system is further improved.

Improving read performance using pre-fetches by encoding an extent map provided by an application executed on a client, where the extent map identifies valid data of the file as extents that may be interspersed with holes constituting invalid data. A server-based filesystem interprets the extent map as a read receipt to bring the right extents in memory ahead of a read request. The extents of the extent map are prefetched at a prefetch read horizon. Because the client is aware of the application-resident extent map, the prefetch operations can intelligently skip over the holes. Multi-stream restores using multiple streams implemented through corresponding TCP connections between client and server are used for the read and pre-fetches.

The invention relates to a base membrane and a preparation method and application thereof. The base film comprises a core layer, a first surface layer and a second surface layer, wherein the first surface layer and the second surface layer are located on two opposite surfaces of the core layer respectively. The materials of the core layer, the first surface layer and the second surface layer respectively and independently comprise matrix resin and a buffer material, the mass percent of the buffer material in the core layer is greater than the mass percent of the buffer material in any one of the first surface layer and the second surface layer, and the buffer material is a high polymer material with elastic recovery performance. The buffer material with elastic recovery performance in the base film is used as a stress dispersion point to promote the film to form more uniformly distributed crazes and shear bands in a stress area instead of penetrating cracks caused by concentrated stress; a large amount of pressure energy can be consumed in the craze and shear band forming process, and meanwhile, the elastic deformation capacity of the buffer material can further absorb residual stress, so that the shear stress peak value in the film is remarkably reduced, and film cracking is avoided.

The invention relates to the technical field of bionic artificial muscle preparation and circuit protection, in particular to application of a bionic artificial muscle with a spiral-crack integrated structure as a protector in a circuit. Through the unique spiral-crack integrated structural design, organic unification of driving strain amplification, wide strain range and high linearity is realized, and the prepared bionic artificial muscle has excellent actuating performance and strain sensing performance, can quickly respond in a short time, and has the advantage of high response speed; the bionic artificial muscle serves as a protector to be applied to a circuit, physical circuit breaking and state real-time feedback during circuit current overload are achieved by means of the contraction characteristic of the bionic artificial muscle under thermal stimulation, the bionic artificial muscle can automatically recover to the initial state after contraction, repeated use is achieved, and the bionic artificial muscle has excellent self-recovery performance and is suitable for popularization and application. The method has important application value in the field of electronic safety protection.

Cloud-based systems and methods are provided for assisting recovery or salvage operations for an aircraft or other vehicle encountering an anomalous condition. An exemplary method involves obtaining status information indicative of a current state of the vehicle en route to a destination, determining an alternative destination for the vehicle different from the destination based at least in part on the current state of the vehicle and one or more salvage criteria associated with a respective salvage strategy, determining an alternative route to the alternative destination for the respective salvage strategy based at least in part on the current state of the vehicle, calculating one or more recovery performance metrics associated with the respective salvage strategy, and providing graphical indicia of the respective one or more recovery performance metrics associated with the respective salvage strategies of the plurality of salvage strategies.

The invention relates to the technical field of fins, and discloses a fin fastening installation hole structure and a fastening support thereof.The fin fastening installation hole structure comprises a main body frame, a plurality of fins and copper pipes are detachably installed in the main body frame, and the fins and the copper pipes are arranged in a staggered mode. And in cooperation with an elastic support assembly with an elastic buckle, rapid assembly, disassembly and stable clamping of the copper pipe are achieved. The anti-skid structure effectively inhibits rotation, axial sliding and radial shaking of the copper pipe, and the matching precision of the copper pipe and the fins is ensured. The elastic support can be taken out only by pulling the elastic buckle during disassembly, position adjustment or replacement of the copper pipe is facilitated, the elastic support can be repeatedly used, and material loss is reduced. Meanwhile, the clamping arms can be made of spring steel or engineering plastic according to the working environment, the requirements for elastic recovery performance and corrosion resistance are both considered, and the adaptability and practicability of the device are further improved.

The novel harmonic reducer retainer comprises a supporting frame and a plurality of window beams connected with the supporting frame, through holes are formed in the window beams and penetrate from the faces, facing an inner ring, of the window beams to the faces, facing an outer ring, of the window beams, and notches are formed in the positions, corresponding to the window beams, of the supporting frame. The two ends of the through hole extend into the notch and are vertically communicated with the notch, an elastic recovery piece is arranged in the through hole, the two circumferential ends of the elastic recovery piece are connected with the two circumferential opposite inner walls of the through hole, the axial end of the elastic recovery piece extends into the notch, and a gap space is reserved between the axial end of the elastic recovery piece and the supporting frame; according to the novel harmonic reducer retainer, when periodical oval deformation occurs, the elastic recovery part deforms accordingly and accumulates elastic potential energy, in the shape recovery process of the retainer, the elastic potential energy stored by the elastic recovery part is released, auxiliary recovery force is applied to the supporting frame, the supporting frame is helped to recover to the shape more quickly and more accurately, and the service life of the harmonic reducer retainer is prolonged. And a stable operation state is maintained, and the elastic recovery performance of the whole retainer is improved.

The application discloses a kind of based on pilot optimization symbol fast recovery method, belong to wireless communication technical field, comprising: S1: by analyzing the contact between the theoretical decision straight line of demodulation symbol under no noise interference and the fitting straight line obtained by fitting demodulation symbol decision straight line using pilot symbol under noise interference, obtain the contact between pilot used for fitting straight line and symbol recovery performance, then by creating pilot optimization problem with the optimal symbol recovery performance as target, solve the problem to obtain optimal pilot;S2: the optimal pilot sequence obtained in S1 is inserted in the data symbol of sending end, and after FBMC-OQAM modulation, it is transmitted;S3: the received signal is demodulated at receiving end, and each subcarrier in the demodulated signal is judged respectively, and the data symbol sent by the sending end is recovered.The optimal solution of pilot optimization problem with the optimal symbol recovery performance as target is obtained by the application, so that the optimized pilot symbol can effectively improve the symbol recovery accuracy.

The application discloses a parallel and cooperative recovery method for an AC-DC hybrid system, takes internal MMC-HVDC as an immune node, corrects an infection matrix, then updates the infection matrix according to the relationship between a node infection rate and a node infection threshold, obtains a reasonable partition scheme according to whether the infection matrix satisfies a partition constraint condition, rationally allocates available recovery resources of subintervals under the premise of guaranteeing relative independence and controllability of recovery of each subintervals, shortens the recovery time difference of different subintervals, and improves the overall recovery efficiency, for the recovery process of the node, updates a recovery matrix according to whether a recovery path satisfies a recovery constraint condition, obtains a unit recovery sequence scheme after all nodes are recovered, and realizes fast parallel and cooperative recovery of the AC-DC hybrid power system under the consideration of MMC-HVDC, and improves the technical effect of the recovery performance of the AC-DC hybrid system.

Improving the runtime and discovery recovery performance for cloud-based logical volume management systems when performing mirror write operations. A mirror write consistency check (MWCC) policy that

The invention provides a recovery cache replacement method and system based on object type perception, and the method comprises the steps: recognizing and distinguishing the type of an object where a recovery data block is located in a node fault recovery process, namely, an object to which redundant data belongs and an object to which non-redundant data belongs; caching methods with different granularities are adopted according to the degradation reads of different types of objects, and the degradation reads of different types of invalid objects are stored or replaced; through differentiation processing of type perception, the function of remarkably improving the cache hit rate in a limited cache space is achieved, unnecessary disk I / O reading is reduced, and therefore the recovery performance and the overall service efficiency of a system in the node fault period are effectively improved. The method is applied to a node fault recovery scene of an erasure code-oriented de-duplication system, and solves the problems of low cache utilization rate and performance reduction caused by incapability of distinguishing object types in a degradation reading process of an existing cache strategy.

The present invention provides a data recovery method, system, and readable storage medium. The method includes the following steps: S1. Constructing a data flow graph based on the distribution of data stripes in the system, wherein nodes in the data flow graph represent data stripes and decoding nodes, respectively, and edges connecting data stripes and decoding nodes represent the selection of recovery paths; S2. Detecting and identifying congested decoding nodes in the data flow graph, deleting the congested decoding nodes and the edges connected to them in the data flow graph; S3. Selecting different recovery methods based on the number of recovery paths for the failed data stripes. The present invention utilizes pruning and pruning of large-scale data flow graphs to select an appropriate data recovery scheme. Erasure code recovery is performed for successful pruning, while interpolation recovery is performed for failed pruning. This can effectively improve recovery performance.

Improving read performance using pre-fetches by encoding an extent map identifying valid data of the file as extents that may be interspersed with holes constituting invalid data, and storing the extent map in the client. The extent map generates pre-fetches of data that land on only extents of the file and avoids the holes, by one of: transferring, upon the read request, the extent map to a filesystem storing the file, and bringing the extents from the extent map into memory ahead of the read request; or using, in the network client, the extent map to generate prefetch requests and execute read-ahead operations on the filesystem. The method may also apply where the application only wants to read what has changed since the last backup. In this case, the application has a map of what has changed, and can choose to read just the right extents.

A method, computer program product, and computer system for defining a recovery performance goal for an application. The method includes obtaining data of errors experienced by users of the application when carrying out an operation in a task and obtaining data of outcomes of the task. The method: correlates requests and responses from the error data with an outcome of the task; determines an error duration from the requests and responses of the error data; and aggregates the error duration and outcome per backend service of the application for multiple users. The method evaluates a recovery period based on a proportion of successful outcomes compared to an error duration for the service and defines a recovery performance goal based on the evaluation.

A method, computer program product, and computer system for defining a recovery performance goal for an application. The method includes obtaining data of errors experienced by users of the application when carrying out an operation in a task and obtaining data of outcomes of the task. The method: correlates requests and responses from the error data with an outcome of the task; determines an error duration from the requests and responses of the error data; and aggregates the error duration and outcome per backend service of the application for multiple users. The method evaluates a recovery period based on a proportion of successful outcomes compared to an error duration for the service and defines a recovery performance goal based on the evaluation.

The utility model discloses a testing device. The testing device comprises a frame piece, a first extrusion piece and a second extrusion piece, the second extrusion piece is slidably connected to the frame piece, the first extrusion piece is connected to the frame piece and is opposite to the second extrusion piece, and the second extrusion piece can move in the direction close to the first extrusion piece to extrude a test piece located between the first extrusion piece and the second extrusion piece. Water spraying holes are formed in the side, facing the first extrusion piece, of the second extrusion piece and used for humidifying the test piece. The first extrusion piece and the second extrusion piece extrude the test piece to test the compression recovery performance of the test piece; the water spraying holes spray water to humidify the test piece before the first extrusion piece and the second extrusion piece extrude the test piece, so that synchronous measurement of the dynamic compression recovery performance and the dehydration performance of the test piece in a wet state is realized, and the test is more suitable for the actual use condition of the test piece; and the use effect and the use period of the test piece can be better monitored and predicted on line.