#7850: Strangely high memory usage on optimized Ackermann function ---------------------------------+------------------------------------------ Reporter: dolio | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.2 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: Runtime performance bug Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by adinapoli): Replying to [comment:14 refold]:
35KiB could be hardly called humongous.
Fair enough, but that was just for half a second of execution, and compared to the other allocation it seemed quite a lot to me. I've tried to do more profiling, but apparently running it with +RTS -hc does not takes GBs of memory very quickly, it has linear increases but then it comes back to relatively small values. I'm a bit puzzled. If I run the same executable without flags, it literally eat up my memory in seconds. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7850#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler