Sun Yat-senuniversity

Shenzhen Lanhe Technologies Co., Ltd.

Zhiguang Chen

Yutong Lu

Dingxiao Yu

Jiachun Yang

Nong Xiao

Zhijun Liang

Churong Tang

Jiawen Luo

Fang Liu

Zejie Hu

Jia Ma

Mingyi Lu

Xianqi Zheng

A directory management method and system for a file system based on Cuckoo hash are provided, including the steps of reading metadata of a sub-directory or a sub-file, used as a target file, in a directory: receiving a request for reading the target file in the directory; for the target file, determining an icandidate data block, in a hash table of the directory according to a hash calculation result obtained by performing hash calculation on a filename filename of the target file according to an ihash function of Cuckoo hash iteratively; if the filename filename of the target file exists in the icandidate data block, reading metadata of the target file and returning the metadata, and ending the process; otherwise, continuing to iterate until the iteration ends and returning a message that the target file does not exist.

Directory management method and system for file system based on Cuckoo hash and storage medium

Portable power supply

Provided in the present invention are a Pull mode and Push mode combined resource management and job scheduling method and system, and a medium. The present invention includes parsing or identifying jobs to determine types, scheduling the jobs according to the types, and for high-performance computing jobs, distributing the jobs by using a Push mode: distributing computing nodes for the high-performance computing jobs, and pushing the high-performance computing jobs to the distributed computing nodes for execution; and for a big data processing job, using a Pull mode to perform distribution: waiting for a job request of each computing node, and when the computing node actively transmits the job request, transmitting the big data processing job to the computing node, which actively transmits the job request, for execution.

Pull mode and push mode combined resource management and job scheduling method and system, and medium

String light pole set

Case for mobile phone

Provided in the present invention are a K-Truss graph-based storage system cache prefetching method, a system, and a medium, where method steps of the present invention include: when a data request stream in a system arrives, an access mode of the data request stream is determined; if said mode is a sequence mode, then n sequence blocks after a data block corresponding to the data request stream are prefetched and serve as prefetch data; otherwise, the data block corresponding to the data request stream serves as a query vertex to query a K-Truss graph, a truss structure matching the query vertex is obtained, and data of a data block from within the truss structure is obtained and serves as prefetch data; the K-Truss graph is updated according to the data block corresponding to the data request stream; and lastly a prefetch data block is prefetched into a main memory.

Cache prefetching method and system based on K-Truss graph for storage system, and medium

A low-latency file system file address space management method and system, and a medium. The method of the present invention comprises: generating a superblock and a block group allocation table from an address space of a storage device, wherein the superblock stores file system information and the allocation situation of block groups on a liner address space of the storage device, and the block group allocation table is used for marking the allocation situation of data blocks in the corresponding block group; when a file is created, dynamically creating or selecting a corresponding block group according to the size of a specified data block and allocating the data block; and writing file data into the allocated data block, and updating the block group allocation table and information of the superblock.

Management method and system for address space of low delay file system and medium

A metadata management method, system and medium are provided. All directories and files in a file system are organized in a tree structure, and all directories and subfiles under a single directory are saved as a whole on a continuous address space of an underlying storage device in the order of creation in sequence. When metadata is updated, update operations on all subdirectories/subfiles under a directory are appended to the tail of the directory in the form of log in order, so that each metadata operation triggers only one IO request. In the process of metadata retrieval, parsing a subdirectory under a parent director requires reading all data on the continuous address space corresponding to the parent directory, and then searching for a match by means of multiple acceleration methods.

Metadata management method, system and medium

Growing community of inventors

Guangdong, China

Zhiguang Chen