meaning of hot spot
1. hot spot 1. primarily used by C/Unix programmers, but spreading It is received wisdom that in most programs, less than 10% of the code eats 90% of the execution time; if one were to graph instruction visits versus code addresses, one would typically see a few huge spikes amidst a lot of low-level noise. Such spikes are called "hot spots" and are good candidates for heavy optimisation or hand-hacking. The term is especially used of tight loops and recursions in the codes central algorithm, as opposed to say initial set-up costs or large but infrequent I/O operations. See tune, bum, hand-hacking. 2. The active location of a cursor on a bit-map display. "Put the mouses hot spot on the "ON" widget and click the left button. " 3. A screen region that is sensitive to mouse clicks, which trigger some action. Hypertext help screens are an example, in which a hot spot exists in the vicinity of any word for which additional material is available. 4. In a massively parallel computer with shared memory, the one location that all 10,000 processors are trying to read or write at once perhaps because they are all doing a busy-wait on the same lock. 5. More generally, any place in a hardware design that turns into a performance bottleneck due to resource contention. [Jargon File]
2. a lively entertainment spot
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