Scanedf

1 definition found

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  Scan-EDF
       
           A variation of the {Scan} disk aceess
          algorithm for use in a {real-time} environment where, in
          general, requests are served according to {Earliest Deadline
          First}.  If two requests share the same deadline, they may be


          reorganised according to Scan.
       
          A typical example is a video server that retrieves video data
          from a hard disk.  The playback of a video impose tight
          real-time constraints but if the server retrieves data once
          every second for each video channel, Scan-EDF can be applied,
          reducing the {seek} {overhead}.
       
          (1995-11-15)