Patents by Inventor David Johns DeWitt

David Johns DeWitt 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).

  • Modeling and forecasting reserve capacity for overbooked clusters
    Patent number: 10225337
    Abstract: Managing cluster resources for a cluster. The method includes identifying a plurality of quiescence policies. Each of the quiescence policies define one or more conditions for cluster entities which when met, identify that cluster resources should be reclaimed from cluster entities by quiescing cluster entities. The method further includes, for each quiescence policy, identifying an amount of reclaimed capacity defining the amount of cluster resources that will be reclaimed by implementing the quiescence policy. The method further includes, for each quiescence policy, identifying an amount of reserve capacity defining the amount of cluster resources that should be reserved for resuming quiesced cluster entities. The method further includes; selecting a quiescence policy based on comparing the reclaimed capacities and reserve capacities for the quiescence policies. The method further includes, booking cluster resources for cluster entities on the cluster according to the selected quiescence policy.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: March 5, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Karthik Saligrama Ramachandra, David Johns DeWitt, Shize Xu, Qun Guo, Ajay Kalhan, Peter Alan Carlin, Willis Lang
  • Modeling and Forecasting Reserve Capacity for Overbooked Clusters
    Publication number: 20180007128
    Abstract: Managing cluster resources for a cluster. The method includes identifying a plurality of quiescence policies. Each of the quiescence policies define one or more conditions for cluster entities which when met, identify that cluster resources should be reclaimed from cluster entities by quiescing cluster entities. The method further includes, for each quiescence policy, identifying an amount of reclaimed capacity defining the amount of cluster resources that will be reclaimed by implementing the quiescence policy. The method further includes, for each quiescence policy, identifying an amount of reserve capacity defining the amount of cluster resources that should be reserved for resuming quiesced cluster entities. The method further includes; selecting a quiescence policy based on comparing the reclaimed capacities and reserve capacities for the quiescence policies.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 4, 2018
    Inventors: Karthik Saligrama Ramachandra, David Johns DeWitt, Shize Xu, Qun Guo, Ajay Kalhan, Peter Alan Carlin, Willis Lang