The Performance of Open Source Applications by Tavish Armstrong

Author:Tavish Armstrong [Armstrong, Tavish]
Language: eng
Format: epub
Publisher: Lulu
Published: 2013-10-30T04:00:00+00:00

These principles can be applied to the algorithm described above to create a version that is far more amenable to optimization; the new algorithm (along with how the above principles influenced the design, is described below.

Phase 1: Determine the number of sub-plans to produce. In this phase, a single thread iterates over all component instances contained in the deployment plan to determine the number of necessary sub-plans. When this operation is performed at the global level, it simply requires a constant time operation per instance. When performed at the local level, it requires that locality constraints (described in D&C Deployment Data Model) be evaluated. Since this phase is potentially time consuming the results are cached for later use. This is an example of Shifting in Time and Exploiting State.

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