Patents by Inventor CHAOJUN ZHAO
CHAOJUN ZHAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11748376Abstract: An apparatus comprises a processing device configured to identify a set of asynchronous data replication sessions currently running on a storage system each associated with a corresponding recovery point objective, and responsive to determining that at least one of the asynchronous data replication sessions has a current synchronization time that exceeds its corresponding recovery point objective for a first iteration of a given time window, to compute a session weight for each of the asynchronous data replication sessions. The processing device is also configured to select, for a second iteration of the given time window, data for transmission from the asynchronous data replication sessions based at least in part on the computed session weights. The processing device is further configured to transmit, during the second iteration of the given time window, the selected data.Type: GrantFiled: April 25, 2022Date of Patent: September 5, 2023Assignee: Dell Products L.P.Inventors: Nan Wang, Chaojun Zhao
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Patent number: 11681447Abstract: Techniques provide storage space balance for a file system. Along these lines, it is determined whether a first allocation proportion of a first metadata storage space of a first type of metadata from among one or more types of metadata of a file system is greater than a first threshold proportion. If the first allocation proportion is greater than the first threshold proportion, a metadata storage space is reserved for the first type of metadata from a storage space of the file system.Type: GrantFiled: May 19, 2020Date of Patent: June 20, 2023Assignee: EMC IP Holding Company LLCInventors: Chaojun Zhao, Yang Zhang
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Patent number: 11663165Abstract: A method, an electronic device, and a computer program product for managing a file system are provided. For example, the method comprises causing multiple data blocks to be written to a storage space of the file system, the size of each of the multiple data blocks being not lower than a threshold size, and creating at least one space fragment in the storage space, the size of each of the at least one space fragment not exceeding the threshold size. Therefore, this solution can quickly and efficiently age a file system.Type: GrantFiled: October 22, 2020Date of Patent: May 30, 2023Assignee: EMC IP Holding Company LLCInventors: Chaojun Zhao, Jia Huang, Hongyuan Zeng, Hao Wang, Mingyi Luo
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Patent number: 11659032Abstract: Techniques for accessing a file involve determining whether a client requests a permission for a target file, the permission allowing the client to cache data associated with the target file. The techniques further involve in response to determining that the client requests the permission, obtaining pattern information related to an access pattern in which the client accesses the target file. The techniques further involve determining availability of the permission to the client by applying the pattern information to a decision model, the decision model being trained based on training pattern information and training permission information. The techniques further involve providing, to the client, an indication on the availability. Accordingly, access conflicts can be reduced, so that the performance of the client and server can be improved.Type: GrantFiled: May 22, 2020Date of Patent: May 23, 2023Assignee: EMC IP Holding Company LLCInventors: Chaojun Zhao, Changxu Jiang, Jianfei Yang, Xiaoyu Ren
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Patent number: 11593307Abstract: Techniques to manage storage spaces involve: determining an allocation rate of a storage pool based on a size of a storage space of the storage pool and sizes of allocated spaces for file systems from the storage space; determining a threshold allocation rate of the storage pool based on the size of the storage space of the storage pool; in accordance with a determination that the allocation rate of the storage pool is greater than the threshold allocation rate, determining a target file system from the file systems based on sizes of unused portions of the allocated spaces for the file systems; and releasing an unused portion of an allocated space for the target file system. Accordingly, the efficiency of space release of a storage system can be improved and the adverse impact of the space release process on the performance of the storage system can be reduced.Type: GrantFiled: July 22, 2020Date of Patent: February 28, 2023Assignee: EMC IP Holding Company LLCInventors: Chaojun Zhao, Hongyuan Zeng, Kai Li, Shuangshuang Liang
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Patent number: 11561929Abstract: Techniques for shrinking a storage space involve determining a used storage space in a storage pool allocated to a plurality of file systems, and determining a usage level of a storage space in the storage pool based on the used storage space in and a storage capacity of the storage pool. The techniques further involve shrinking a storage space from one or more of the plurality of file systems based on the usage level of the storage pool. Such techniques may automatically shrink storage space in one or more file systems from the global level of the storage pool, which determines an auto shrink strategy according to overall performance of the storage pool, thereby improving efficiency of auto shrink and balancing system performance and saving space.Type: GrantFiled: May 26, 2020Date of Patent: January 24, 2023Assignee: EMC IP Holding Company LLCInventors: Chaojun Zhao, Hongyuan Zeng, Shuangshuang Liang, Kai Li
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Patent number: 11550587Abstract: An instruction processing device and an instruction processing method are disclosed. The instruction processing device includes: an instruction boundary prediction unit including circuitry configured to acquire an instruction packet of a variable-length instruction set and to add instruction prediction information to a plurality of instruction meta-fields in the instruction packet; and an instruction pipeline structure comprising an instruction fetch unit including an instruction boundary determination unit including circuitry configured to determine instruction boundary information according to the instruction prediction information to obtain one or more instructions in the instruction packet.Type: GrantFiled: July 17, 2020Date of Patent: January 10, 2023Assignee: C-SKY Microsystems Co., Ltd.Inventors: Chen Chen, Dongqi Liu, Tao Jiang, Chaojun Zhao
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Patent number: 11487704Abstract: Techniques for adjusting storage space involve: receiving a request for adjusting available storage space of a user in a filesystem from a first size to a second size; determining whether to allow to adjust the available storage space based on the request; and in response to allowing to adjust the available storage space, adjusting the available storage space to the second size. Accordingly, not only operations that an administrator needs to perform for adjusting the available storage space of a user is reduced, but also a quick and correct response for a request from a user of adjusting the available storage space is guaranteed.Type: GrantFiled: May 26, 2020Date of Patent: November 1, 2022Assignee: EMC IP Holding Company LLCInventors: Jiang Tan, Hao Wang, Chaojun Zhao, Hongyuan Zeng, Yang Zhang
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Patent number: 11487680Abstract: An apparatus and a method are disclosed. In the apparatus, a memory management unit includes: a first cache unit, adapted to store a plurality of first source operands and one first write address; a second cache unit, adapted to store at least one pair of a second source operand and a second destination address; a write cache module, adapted to discriminate between destination addresses of a plurality of store instructions, so as to store, in the first cache unit, a plurality of source operands corresponding to consecutive destination addresses, and to store, in the second cache unit, non-consecutive destination addresses and source operands corresponding to the non-consecutive destination addresses, where the first write address is an initial address of the consecutive destination addresses; and a bus transmission module, adapted to transmit the plurality of first source operands and the first write address in the first cache unit to a memory through a bus in a write burst transmission mode.Type: GrantFiled: September 10, 2020Date of Patent: November 1, 2022Assignee: ALIBABA GROUP HOLDING LIMITEDInventors: Xiaoyan Xiang, Yimin Lu, Chaojun Zhao
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Patent number: 11436146Abstract: A storage control apparatus, a storage control method, a processing apparatus, and a computer system are disclosed. The storage control apparatus includes: an address detection unit, adapted to detect whether any jump of physical addresses to which sequentially arriving write access requests are mapped occurs; and a logic control unit, adapted to use a no-write allocate policy if a cache is not hit and no jump of the physical addresses to which the plurality of sequentially arriving write access requests are mapped occurs, where in the no-write allocate policy, if a quantity of continuous jumps of the physical addresses to which the plurality of sequentially arriving write access requests are mapped is less than a preset quantity, the logic control unit keeps using the no-write allocate policy, where the preset quantity is greater than 1.Type: GrantFiled: July 24, 2020Date of Patent: September 6, 2022Assignee: Alibaba Group Holding LimitedInventors: Yimin Lu, Xiaoyan Xiang, Taotao Zhu, Chaojun Zhao
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Patent number: 11429391Abstract: A processor core, a processor, an apparatus, and an instruction processing method are disclosed. The processor core includes: an instruction fetch unit, where the instruction fetch unit includes a speculative execution predictor and the speculative execution predictor compares a program counter of a memory access instruction with a table entry stored in the speculative execution predictor and marks the memory access instruction; a scheduler unit adapted to adjust a send order of marked memory access instructions and send the marked memory access instructions according to the send order; an execution unit adapted to execute the memory access instructions according to the send order. In the instruction fetch unit, a memory access instruction is marked according to a speculative execution prediction result. In the scheduler unit, a send order of memory access instructions is determined according to the marked memory access instruction and the memory access instructions are sent.Type: GrantFiled: August 27, 2020Date of Patent: August 30, 2022Assignee: Alibaba Group Holding LImitedInventors: Dongqi Liu, Chang Liu, Yimin Lu, Tao Jiang, Chaojun Zhao
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Patent number: 11379423Abstract: A method, computer program product, and computing system for receiving a request from a client device to access a file stored in a storage system configured to be communicatively coupled to a plurality of client devices. It may be determined whether to delegate the file to the requesting client device based upon, at least in part, a reinforcement learning model, thus defining a file delegation determination. An access pattern associated with the file may be monitored. The reinforcement learning model may be updated based upon, at least in part, the monitored access pattern associated with the file and the file delegation determination.Type: GrantFiled: May 3, 2019Date of Patent: July 5, 2022Inventors: Jianfei Yang, Chaojun Zhao, Xiaoyu Ren, Changxu Jiang, Srinivasa R. Chamarthy
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Patent number: 11320997Abstract: Storage management techniques involve determining, from a set of users sharing a storage system, a plurality of target users with storage quotas to be updated; obtaining a total increase storage quota to be increased for the storage system; and determining allocation of the total increase storage quota among the plurality of target users according to at least one of a first strategy associated with quota proportions and a second strategy associated with a used storage capacity. The allocation of the increase storage quota is determined automatically according one or more predefined strategies, which can achieve storage quota allocation effectively and automatically, thereby increasing storage efficiency.Type: GrantFiled: May 19, 2020Date of Patent: May 3, 2022Assignee: EMC IP Holding Company LLCInventors: Hongyuan Zeng, Hao Wang, Chaojun Zhao, Yang Zhang, Jiang Tan
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Patent number: 11314121Abstract: A color filter substrate and a display device are provided. The color filter substrate includes a color filter base and a black matrix layer. The color filter base includes an active area and a frame area disposed beside the active area. The black matrix layer is disposed on the color filter substrate and positioned in the active area and a portion of the frame area. An edge of the frame area of the color filter base is provided with a groove.Type: GrantFiled: August 5, 2019Date of Patent: April 26, 2022Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.Inventors: Chaojun Zhao, Fei Ai, Shiyu Long
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Publication number: 20220100707Abstract: A method, an electronic device, and a computer program product for managing a file system are provided. For example, the method comprises causing multiple data blocks to be written to a storage space of the file system, the size of each of the multiple data blocks being not lower than a threshold size, and creating at least one space fragment in the storage space, the size of each of the at least one space fragment not exceeding the threshold size. Therefore, this solution can quickly and efficiently age a file system.Type: ApplicationFiled: October 22, 2020Publication date: March 31, 2022Inventors: Chaojun Zhao, Jia Huang, Hongyuan Zeng, Hao Wang, Mingyi Luo
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Patent number: 11237994Abstract: The present invention discloses an interrupt controller, including: a sampling unit adapted to receive interrupts from various interrupt sources coupled to the interrupt controller and perform sampling on the received various interrupts; and a priority arbitration unit adapted to classify the received various interrupts into a plurality of interrupt segments, where each interrupt segment includes one or more sampled interrupts, and determine, segment by segment an interrupt with the highest priority in a selected segment, until an interrupt with the highest priority among all interrupts is identified through arbitration and used as an to-be-responded-to interrupt. The present invention further discloses a processor including the interrupt controller, and a system-on-chip.Type: GrantFiled: September 18, 2020Date of Patent: February 1, 2022Assignee: Alibaba Group Holding LimitedInventors: Chaojun Zhao, Tao Jiang
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Publication number: 20210364850Abstract: A color filter substrate and a display device are provided. The color filter substrate includes a color filter base and a black matrix layer. The color filter base includes an active area and a frame area disposed beside the active area. The black matrix layer is disposed on the color filter substrate and positioned in the active area and a portion of the frame area. An edge of the frame area of the color filter base is provided with a groove.Type: ApplicationFiled: August 5, 2019Publication date: November 25, 2021Inventors: CHAOJUN ZHAO, FEI AI, SHIYU LONG
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Patent number: 11182318Abstract: Embodiments of the present disclosure provide an interrupt controller in a processor, comprising: an interrupt sampling circuitry configured to receive one or more interrupts from one or more interrupt sources that are communicatively coupled to the interrupt controller; and an arbitration circuitry configured to select a to-be-responded interrupt from the received one or more interrupts, the arbitration circuitry comprising: a selection circuitry configured to select from the one or more interrupts a highest-priority interrupt that has a highest priority among the one or more interrupts; and a threshold comparison circuitry communicatively coupled to the selection circuitry, the threshold comparison circuitry configured to compare the priority of the highest-priority interrupt with a preset priority threshold, wherein the arbitration circuitry is configured to select the highest-priority interrupt as the to-be-responded interrupt in response to the threshold comparison circuitry determining that the priorityType: GrantFiled: March 24, 2020Date of Patent: November 23, 2021Assignee: Alibaba Group Holding LimitedInventors: Chaojun Zhao, Xiaoyan Xiang, Chen Chen, Taotao Zhu
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Publication number: 20210216505Abstract: Techniques to manage storage spaces involve: determining an allocation rate of a storage pool based on a size of a storage space of the storage pool and sizes of allocated spaces for file systems from the storage space; determining a threshold allocation rate of the storage pool based on the size of the storage space of the storage pool; in accordance with a determination that the allocation rate of the storage pool is greater than the threshold allocation rate, determining a target file system from the file systems based on sizes of unused portions of the allocated spaces for the file systems; and releasing an unused portion of an allocated space for the target file system. Accordingly, the efficiency of space release of a storage system can be improved and the adverse impact of the space release process on the performance of the storage system can be reduced.Type: ApplicationFiled: July 22, 2020Publication date: July 15, 2021Inventors: Chaojun Zhao, Hongyuan Zeng, Kai Li, Shuangshuang Liang
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Publication number: 20210132829Abstract: Techniques provide storage space balance for a file system. Along these lines, it is determined whether a first allocation proportion of a first metadata storage space of a first type of metadata from among one or more types of metadata of a file system is greater than a first threshold proportion. If the first allocation proportion is greater than the first threshold proportion, a metadata storage space is reserved for the first type of metadata from a storage space of the file system.Type: ApplicationFiled: May 19, 2020Publication date: May 6, 2021Inventors: Chaojun Zhao, Yang Zhang