Patents by Inventor Yujuan Li

Yujuan Li 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).

  • Approach to improve decompression performance by scatter gather compression units and also updating checksum mechanism
    Patent number: 11210162
    Abstract: A method, apparatus, and system for decompressing data with a hardware compression/decompression accelerator is disclosed.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: December 28, 2021
    Assignee: EMC IP HOLDING COMPANY LLC
    Inventors: Wei Lin, Yujuan Li, Tao Chen, Yong Zou, Rahul Ugale
  • Method for gracefully handling QAT hardware or CPU software failures by dynamically switching between QAT hardware and CPU software for data compression and decompression
    Patent number: 11194651
    Abstract: A method, apparatus, and system for handling a failure of a hardware cryptography/compression accelerator is disclosed. The operations comprise: detecting that a hardware cryptography/compression accelerator at a first data storage system has failed; determining one or more failed cryptography and/or compression operation tasks that were submitted to the hardware cryptography/compression accelerator but were not completed due to the failure of the hardware cryptography/compression accelerator; and performing a remedial operation in response to the hardware cryptography/compression accelerator failure to prevent a systemic failure.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: December 7, 2021
    Assignee: EMC IP HOLDING COMPANY LLC
    Inventors: Wei Lin, Yujuan Li, Tao Chen, Yong Zou, Rahul Ugale
  • APPROACH TO IMPROVE DECOMPRESSION PERFORMANCE BY SCATTER GATHER COMPRESSION UNITS AND ALSO UPDATING CHECKSUM MECHANISM
    Publication number: 20210109806
    Abstract: A method, apparatus, and system for decompressing data with a hardware compression/decompression accelerator is disclosed.
    Type: Application
    Filed: October 11, 2019
    Publication date: April 15, 2021
    Inventors: Wei LIN, Yujuan LI, Tao CHEN, Yong ZOU, Rahul UGALE
  • METHOD FOR GRACEFULLY HANDLING QAT HARDWARE OR CPU SOFTWARE FAILURES BY DYNAMICALLY SWITCHING BETWEEN QAT HARDWARE AND CPU SOFTWARE FOR DATA COMPRESSION AND DECOMPRESSION
    Publication number: 20210109803
    Abstract: A method, apparatus, and system for handling a failure of a hardware cryptography/compression accelerator is disclosed. The operations comprise: detecting that a hardware cryptography/compression accelerator at a first data storage system has failed; determining one or more failed cryptography and/or compression operation tasks that were submitted to the hardware cryptography/compression accelerator but were not completed due to the failure of the hardware cryptography/compression accelerator; and performing a remedial operation in response to the hardware cryptography/compression accelerator failure to prevent a systemic failure.
    Type: Application
    Filed: October 11, 2019
    Publication date: April 15, 2021
    Inventors: Wei LIN, Yujuan LI, Tao CHEN, Yong ZOU, Rahul UGALE
  • Performance optimization and support compatibility of data compression with hardware accelerator
    Patent number: 10848179
    Abstract: One embodiment provides a computer implemented method of data compression using a hardware accelerator. A first thread pool for compression jobs, and a first polling thread is allocated for polling the status of a hardware accelerator. A compression thread is retrieved from the first thread pool in response to a compression request from a file system. Multiple source data buffers from the file system are aggregated into a compression unit, and a scatter gather list and destination buffer are submitted to the hardware accelerator. A checksum of result data is calculated from the destination buffer. A zlib header is added to the result data, and the checksum is added as a zlib footer to the result data.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: November 24, 2020
    Assignee: EMC IP HOLDING COMPANY LLC
    Inventors: Yujuan Li, Wei Lin, Tao Chen, Colin Zou, Rahul Ugale