Optimisation Policies Sample Clauses

Optimisation Policies. The Planner and ActivePlanner components perform optimised scheduling of abstract BPEL processes based on user-defined policies. These policies guide the CostCalculator during the quantification of planner execution. Optimisation policies are declared within the BPEL document and can apply to individual partnerLinkTypes or to the whole process. In BPEL, partnerLinkTypes define the classes of Web Services that can participate with multiple roles in a process. A particular instantiation of a partnerLinkType inside the process is denoted by a partnerLink element definition. A process may include various different parterLinks from the same partnerLinkType participating in the process with different roles. In practice a partnerLink is the Web Service whose operations can be invoked during process execution. The selection of a specific Web Service instance to be used in a particular process invocation is driven by the optimisation policy applied either on the process level or on a partnerLink level. Currently POS supports six different optimisation policies: • Host load: Hosts with the lowest system load take precedence. • Fastest CPU: Hosts are ranked according to their CPU capabilities and the best is selected. • Memory Utilisation: Hosts are ranked according to the percentage of available memory as reported by the Java VM. The one with the highest percentage is selected. • Storage Utilisation: Hosts are ranked according to their total available disk space. The one with the larger available space is preferred. • Reliability: Hosts are ranked based on their total uptime. Precedence is given to hosts that have been running without interruption for longer time. • Network Utilisation: When the Planner evaluates multiple possible scheduling plans it will show preference to those plans where the web services are located close to each other (based on the reported host locality information). The Planner will avoid co-scheduling invocations to the same host in order not to overload it. In order to perform the various cost estimations for the one or combination of two or more policies, the CostCalculator collects various metrics from the gCube information system (IS) via the ServiceQueryBridge component. These metrics reflect the state of the VRE and constituting
Sample 1Sample 2
AutoNDA by SimpleDocs

Related to Optimisation Policies

  • Promotion Policy The Director of Human Resources, upon request of an appointing authority, shall determine whether an examination is to be called on a promotional basis.

  • Union Policy Grievance The Union may institute a grievance consisting of an allegation of a general misinterpretation or a violation by the Employer of this Agreement in writing at Step Number 2 of the grievance procedure, providing that it is presented within ten (10) working days after the circumstances giving rise to the grievance have originated or occurred. However, it is expressly understood that the provisions of this clause may not be used to institute a grievance directly affecting an employee or employees which such employee or employees could themselves initiate as an individual or group grievance and the regular grievance procedure shall not be thereby bypassed.

  • Vacation Policy The Executive shall be entitled to a paid vacation of four weeks during each year of the Term.

  • Cancellation Policy Client is responsible for payment of the agreed upon fee for any missed session(s). Client is also responsible for payment of the agreed upon fee for any session(s) for which Client failed to give Therapist at least 24 hours’ notice of cancellation. Cancellation notice should be left on Therapist’s voice mail at 925-322-1681.

Draft better contracts in just 5 minutes Get the weekly Law Insider newsletter packed with expert videos, webinars, ebooks, and more!