15 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 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.

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.

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.

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 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.

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 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.