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In computer science, FINO is a humorous scheduling algorithm. It is an acronym for first in, never out as opposed to traditional first in, first out (FIFO) and last in, first out (LIFO) algorithms.[1][2] A similar acronym is "FISH", for first in, still here.

FINO works by withholding all scheduled tasks permanently. No matter how many tasks are scheduled at any time, no task ever actually takes place.

A stateful FINO queue can be used to implement a memory leak.[citation needed]

The first mention of FINO appears in the Signetics 25120 write-only memory joke datasheet.[2][3]

See also[edit]


  1. ^ "FINO - First In Never Out (accounting)". Acronym Finder. Retrieved 22 June 2022.
  2. ^ a b "First In Never Out (FINO) scheduling in Operating System". GeeksforGeeks. Retrieved 22 June 2022.
  3. ^ ""Signetics 25120 Data Sheet"" (PDF). Archived from the original (PDF) on March 17, 2006. Retrieved 2012-03-16. (alternate copy)