#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 RyanGlScott): Well, I strongly suspected that default methods were the culprit here, so I trimmed down `store` (and `store-core`) into two modules and compiled each with `+RTS -s`. But to my amazement, both GHC 8.0.1 and 8.0.2 allocation almost the same number of bytes on the heap with this program! So it's likely something other than default methods that are causing the issue. In any case, I hope the attached programs serve as a useful springboard for further attempts to dissect this issue. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13059#comment:11 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler