Patents by Inventor Joon-Jack Yap

Joon-Jack Yap 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).

  • Sharing processor cores in a multi-threading block i/o request processing data storage system
    Patent number: 10817220
    Abstract: A block I/O request processing threads executes only on a processor core to which it is assigned. After it executes for a period of time, the block I/O request processing thread yields its assigned processing core to another type of thread that is runnable on the processing core, such as a file I/O request processing thread. When there are no block I/O requests for a block I/O request processing thread to process, it is suspended from being executed. A monitor thread running on another processing core detects that a newly received block I/O request is available for processing, and makes the block I/O request processing thread runnable again. The block I/O request processing thread may be assigned a higher priority than file I/O request processing threads, and preempt any runnable file I/O request processing threads when it is made runnable to process the newly received block I/O request.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: October 27, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Jean-Pierre Bono, Sudhir Srinivasan, Joon-Jack Yap
  • Sharing Processor Cores in a Data Storage System
    Publication number: 20200249867
    Abstract: A block I/O request processing threads executes only on a processor core to which it is assigned. After it executes for a period of time, the block I/O request processing thread yields its assigned processing core to another type of thread that is runnable on the processing core, such as a file I/O request processing thread. When there are no block I/O requests for a block I/O request processing thread to process, it is suspended from being executed. A monitor thread running on another processing core detects that a newly received block I/O request is available for processing, and makes the block I/O request processing thread runnable again. The block I/O request processing thread may be assigned a higher priority than file I/O request processing threads, and preempt any runnable file I/O request processing threads when it is made runnable to process the newly received block I/O request.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 6, 2020
    Inventors: Jean-Pierre Bono, Sudhir Srinivasan, Joon-Jack Yap