#7850: Strangely high memory usage on optimized Ackermann function ------------------------------------+--------------------------------------- Reporter: dolio | Owner: Type: bug | Status: new Priority: normal | Component: Compiler Version: 7.6.2 | Keywords: Os: Linux | Architecture: Unknown/Multiple Failure: Runtime performance bug | Blockedby: Blocking: | Related: ------------------------------------+--------------------------------------- Changes (by Artyom.Kazak): * architecture: x86_64 (amd64) => Unknown/Multiple Comment: This bug is reproducible on my laptop (Linux, x86). I was not able to run the optimised program with less than 64kb of heap, though (was getting `Heap exhausted` errors), but running it with `-M64000` resulted in fifteen minutes of freeze and this error message: {{{internal error: getMBlock: mmap: Operation not permitted}}} -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7850#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler