#13059: High memory usage during compilation -------------------------------------+------------------------------------- Reporter: domenkozar | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.2-rc2 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: -------------------------------------+------------------------------------- I'm building stack using GHC 8.0.2-rc2 and noticed store uses 5.17GB of (RSS) memory during https://github.com/fpco/store/blob/master/src/Data/Store/Internal.hs compilation step. Using GHC 8.0.1 memory goes up to only 1.6GB. I haven't dug deeper, but something suspicious is going on. You should be able to reproduce using installed Nix and executing nix- build -A haskell.packages.ghc802.store '<nixpkgs>' using recent channel. Building haddock for store also goes up to 5.8GB. It'd be great if someone is able to reproduce this using plan GHC 8.0.2-rc2 See also https://github.com/fpco/store/issues/91 for upstream bug report. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13059 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler