dict.org

The DICT Development Group


Search for:
Search type:
Database:

Database copyright information
Server information


3 definitions found
 for hot spot
From WordNet (r) 3.0 (2006) :

  hot spot
      n 1: a place of political unrest and potential violence; "the
           United States cannot police all of the world's hot spots"
           [syn: hot spot, hotspot]
      2: a point of relatively intense heat or radiation [syn: hot
         spot, hotspot]
      3: a lively entertainment spot [syn: hot spot, hotspot]

From The Jargon File (version 4.4.7, 29 Dec 2003) :

  hot spot
   n.
  
      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 optimization or hand-hacking. The term is especially used of
      tight loops and recursions in the code's central algorithm, as opposed to
      (say) initial set-up costs or large but infrequent I/O operations. See {
      tune, hand-hacking.
  
      2. The active location of a cursor on a bit-map display. ?Put the mouse's
      hot spot on the ?ON? widget and click the left button.?
  
      3. A screen region that is sensitive to mouse gestures, which trigger some
      action. World Wide Web pages now provide the canonical examples; WWW
      browsers present hypertext links as hot spots which, when clicked on, point
      the browser at another document (these are specifically called hotlinks).
  
      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.
  

From The Free On-line Dictionary of Computing (30 December 2018) :

  hot spot
  
     C/{Unix">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 code's 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 mouse's 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.
  
     6. wireless hotspot.
  
     [{Jargon File]
  
     (1995-02-16)
  

Contact=webmaster@dict.org Specification=RFC 2229