Patents by Inventor Joshua Douglas Martin

Joshua Douglas Martin 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).

  • Method for selectively enabling and disabling read caching in a storage subsystem
    Patent number: 8874854
    Abstract: A mechanism for selectively disabling and enabling read caching based on past performance of the cache and current read/write requests. The system improves overall performance by using an autonomic algorithm to disable read caching for regions of backend disk storage (i.e., the backstore) that have had historically low cache hit ratios. The result is that more cache becomes available for workloads with larger hit ratios, and less time and machine cycles are spent searching the cache for data that is unlikely to be there.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: October 28, 2014
    Assignee: International Business Machines Corporation
    Inventors: Lee Charles La Frese, Joshua Douglas Martin, Justin Thomson Miller, Vernon Walter Miller, James Russell Thompson, Yan Xu, Olga Yiparaki
  • System and method for identifying least busy resources in a storage system using values assigned in a hierarchical tree structure
    Patent number: 8117619
    Abstract: An apparatus, system and method to optimize load distribution across logical and physical resources in a storage system. An apparatus in accordance with the invention may include an availability module and an allocation module. The availability module may dynamically assign values to resources in a hierarchical tree structure. Each value may correspond to an availability parameter such as allocated volumes, current resource utilization, and historic resource utilization. The allocation module may serially process the values and allocate a load to a least busy resource in the hierarchical tree structure based on the assigned values.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: February 14, 2012
    Assignee: International Business Machines Corporation
    Inventors: Lee Charles LaFrese, Joshua Douglas Martin, Justin Thomson Miller, Vernon Walter Miller, James Russell Thompson, Yan Xu, Olga Yiparaki
  • SYSTEM AND METHOD FOR OPTIMIZING LOAD DISTRIBUTION ACROSS LOGICAL AND PHYSICAL RESOURCES IN A STORAGE SYSTEM
    Publication number: 20090064159
    Abstract: An apparatus, system and method to optimize load distribution across logical and physical resources in a storage system. An apparatus in accordance with the invention may include an availability module and an allocation module. The availability module may dynamically assign values to resources in a hierarchical tree structure. Each value may correspond to an availability parameter such as allocated volumes, current resource utilization, and historic resource utilization. The allocation module may serially process the values and allocate a load to a least busy resource in the hierarchical tree structure based on the assigned values.
    Type: Application
    Filed: August 31, 2007
    Publication date: March 5, 2009
    Inventors: Lee Charles LaFrese, Joshua Douglas Martin, Justin Thomson Miller, Vernon Walter Miller, James Russell Thompson, Yan Xu, Olga Yiparaki
  • Method for Selectively Enabling and Disabling Read Caching in a Storage Subsystem
    Publication number: 20090037662
    Abstract: A mechanism for selectively disabling and enabling read caching based on past performance of the cache and current read/write requests. The system improves overall performance by using an autonomic algorithm to disable read caching for regions of backend disk storage (i.e., the backstore) that have had historically low cache hit ratios. The result is that more cache becomes available for workloads with larger hit ratios, and less time and machine cycles are spent searching the cache for data that is unlikely to be there.
    Type: Application
    Filed: July 30, 2007
    Publication date: February 5, 2009
    Inventors: Lee Charles La Frese, Joshua Douglas Martin, Justin Thomas Miller, Vernon Walter Miller, James Russell Thompson, Yan Xu, Olga Yiparaki