speedups

/S P IY1 D AH0 P S/
noun
  1. 1

    An amount or rate of decrease in time taken to do a certain amount of work.

  2. 2

    The relationship between time taken and number of processors used.

  3. 3

    (labor) An employer's demand for more output without more pay.

Source: https://en.wiktionary.org/wiki/speedup, https://en.wiktionary.org/wiki/speedups