#7994: Make foldl into a good consumer -------------------------------------+------------------------------------ Reporter: simonpj | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by nomeata): Updated numbers, now running nofib in slow mode. Now the results look slightly better. Guess that is what benchmarking is about: Tweaking the tests until the results are what we want them to be: Effect of Call Arity (with the original foldl): {{{ min mean max Allocations -1.3% -0.0% 0.0% Runtime -4.0% -0.0% +4.9% }}} Effect of Call Arity + defining foldl with foldr: {{{ min mean max Allocations -79.0% -5.2% 0.0% Runtime -47.4% -1.9% +3.0% }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7994#comment:21 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler