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This creates a so-called protocol overhead as the additional data does not contribute to the intrinsic meaning of the message. [5] [6] In telephony, number dialing and call set-up time are overheads. In two-way (but half-duplex) radios, the use of "over" and other signaling needed to avoid collisions is an overhead.
The extra design features necessary to meet these demands are called overhead. For instance, in electrical engineering , a particular integrated circuit might draw large current , requiring a robust power delivery circuit and a heat-dissipation mechanism.
In computer programming, the most common usage of the term is in the context of message protocols, to differentiate the protocol overhead from the actual data. For example, a JSON web service response might be: { "data": { "message": "Hello, world!" } } The string Hello, world! is the payload of JSON message, while the rest is protocol overhead.
In computer science, dynamic dispatch is the process of selecting which implementation of a polymorphic operation (method or function) to call at run time.It is commonly employed in, and considered a prime characteristic of, object-oriented programming (OOP) languages and systems.
In parallel computing, granularity (or grain size) of a task is a measure of the amount of work (or computation) which is performed by that task. [1]Another definition of granularity takes into account the communication overhead between multiple processors or processing elements.
A grid computing system that connects many personal computers over the Internet via inter-process network communication. In computer science, interprocess communication (IPC) is the sharing of data between running processes in a computer system.
A process with two threads of execution, running on one processor Program vs. Process vs. Thread Scheduling, Preemption, Context Switching. In computer science, a thread of execution is the smallest sequence of programmed instructions that can be managed independently by a scheduler, which is typically a part of the operating system. [1]
Overhead (business), the ongoing operating costs of running a business; Engineering overhead, ancillary design features required by a component of a device Overhead (computing), ancillary computation required by an algorithm or program; Protocol overhead, additional bandwidth used by a communications protocol