#13059: High memory usage during compilation -------------------------------------+------------------------------------- Reporter: domenkozar | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.2-rc2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: x86_64 Type of failure: Compile-time | (amd64) performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Quadrupling memory, adding 4Gb (that's a LOT of memory), is ridiculous! Yes, there are a dozen or two instance declarations, but only some use the default methods, and even if they do typechecking them should not take tons of memory. Something is mysterious here. I'd try `-dshow-passes` before and after, to see if the code size changes. It shouldn't change as a result of the patch, but with numbers as above I bet it does! Then it'd be a question of seeing why. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13059#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler