Invention Application
US20170060642A1 CONSTRAINED PLACEMENT IN HIERARCHICAL RANDOMIZED SCHEDULERS 有权
分层随机调度器中的约束放置

  • Patent Title: CONSTRAINED PLACEMENT IN HIERARCHICAL RANDOMIZED SCHEDULERS
  • Patent Title (中): 分层随机调度器中的约束放置
  • Application No.: US14986161
    Application Date: 2015-12-31
  • Publication No.: US20170060642A1
    Publication Date: 2017-03-02
  • Inventor: Luca CASTELLANO
  • Applicant: VMware, Inc.
  • Main IPC: G06F9/50
  • IPC: G06F9/50 G06F9/455 H04L29/08
CONSTRAINED PLACEMENT IN HIERARCHICAL RANDOMIZED SCHEDULERS
Abstract:
A distributed scheduler for a virtualized computer system has a hierarchical structure and includes a root scheduler as the root node, one or more branch schedulers as intermediate nodes, and a plurality of hosts as leaf nodes. A request to place a virtual computing instance is propagated down the hierarchical structure to the hosts that satisfy placement constraints of the request. Each host that receives the request responds with a score indicating resource availability on that host, and the scores are propagated back up the hierarchical structure. Branch schedulers that receive such scores compare the received scores and further propagate a “winning” score, such as the highest or lowest score, up the hierarchical structure, until the root scheduler is reached. The root scheduler makes a similar comparison of received scores to select the best candidate among the hosts to place the virtual computing instance.
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