Any combination of excess or indirect computation time, memory, bandwidth, or other resources that are required to perform a specific task
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In computing, overhead is the consumption of computing resources for aspects that are not directly related to achieving a desired goal. Overhead is required for more general processing and impacts achieving a more focused goal. Overhead manifests as aspects such as slower processing, less memory, less storage capacity, less network bandwidth, and longer latency. Overhead can impact software design with regard to structure, error correction, and feature inclusion.