Invention Application
- Patent Title: CONSTRAINED PLACEMENT IN HIERARCHICAL RANDOMIZED SCHEDULERS
- Patent Title (中): 分层随机调度器中的约束放置
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Application No.: US14986161Application Date: 2015-12-31
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Publication No.: US20170060642A1Publication Date: 2017-03-02
- Inventor: Luca CASTELLANO
- Applicant: VMware, Inc.
- Main IPC: G06F9/50
- IPC: G06F9/50 ; G06F9/455 ; H04L29/08

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.
Public/Granted literature
- US09804895B2 Constrained placement in hierarchical randomized schedulers Public/Granted day:2017-10-31
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