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Fast path is a term used in computer science to describe a path with shorter instruction path length through a program compared to the normal path. For a fast path to be effective it must handle the most commonly occurring tasks more efficiently than the normal path, leaving the latter to handle uncommon cases, corner cases, error handling, and other anomalies. Fast paths are a form of optimization.

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  • Fast path (en)
  • 快速路徑 (zh)
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  • 在程式設計中，快速路徑（英語：fast path）是指在一個程式中比起一般路徑有更短的路徑。有效的快速路徑會在處理最常出現的的情形上比一般路徑更有效率，讓一般路徑處理特殊情形、邊角情形、錯誤處理與其它反常狀況。快速路徑是的一種形式。 (zh)
  • Fast path is a term used in computer science to describe a path with shorter instruction path length through a program compared to the normal path. For a fast path to be effective it must handle the most commonly occurring tasks more efficiently than the normal path, leaving the latter to handle uncommon cases, corner cases, error handling, and other anomalies. Fast paths are a form of optimization. (en)
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  • Fast path is a term used in computer science to describe a path with shorter instruction path length through a program compared to the normal path. For a fast path to be effective it must handle the most commonly occurring tasks more efficiently than the normal path, leaving the latter to handle uncommon cases, corner cases, error handling, and other anomalies. Fast paths are a form of optimization. For example dedicated packet routing hardware used to build computer networks will often support software dedicated to handling the most common kinds of packets, with other kinds, for example with control information or packets directed at the device itself instead of being routed elsewhere, put on the metaphorical "slow path", in this example usually implemented by software running on the control processor. Specific implementations of networking software architectures have been developed that leverage the concept of a fast path to maximize the performance of packet processing software. In these implementations, the networking stack is split into two layers and the lower layer, typically called the fast path, processes the majority of incoming packets outside the OS environment without incurring any of the OS overheads that degrade overall performance. Only those rare packets that require complex processing are forwarded to the OS networking stack, which performs the necessary management, signaling and control functions. Some hardware RAID controllers implement a "fast path" for write-through access which bypasses the controller's cache in certain situations. This tends to increase IOPS, particularly for solid-state drives. (en)
  • 在程式設計中，快速路徑（英語：fast path）是指在一個程式中比起一般路徑有更短的路徑。有效的快速路徑會在處理最常出現的的情形上比一般路徑更有效率，讓一般路徑處理特殊情形、邊角情形、錯誤處理與其它反常狀況。快速路徑是的一種形式。 (zh)
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