#14792: compiling cabal-1.24.2.0 requires almost 3 GB of memory -------------------------------------+------------------------------------- Reporter: bfrk | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.2 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Not sure if this is really a bug, but I noticed that ghc-8.2.2 requires a whole lot more memory than ghc-7-10.3. This is how I found out about it: {{{ ben@yuiitsu[1]:.../src/Cabal-1.24.2.0>ulimit -v 2600000 ben@yuiitsu[1]:.../src/Cabal-1.24.2.0>cabal new-build Resolving dependencies... Build profile: -w ghc-8.2.2 -O1 In order, the following will be built (use -v for more details): - Cabal-1.24.2.0 (lib) (first run) Configuring library for Cabal-1.24.2.0.. Preprocessing library for Cabal-1.24.2.0.. Building library for Cabal-1.24.2.0.. [ 1 of 86] Compiling Distribution.Compat.Binary ( Distribution/Compat/Binary.hs, /home/ben/src/Cabal-1.24.2.0/dist- newstyle/build/x86_64-linux/ghc-8.2.2/Cabal-1.24.2.0/build/Distribution/Compat/Binary.o ) [...] [30 of 86] Compiling Distribution.PackageDescription ( Distribution/PackageDescription.hs, dist/build/Distribution/PackageDescription.o ) ghc: out of memory cabal: Failed to build Cabal-1.24.2.0 (which is required by darcs-2.13.0). The build process terminated with exit code 251 }}} It works when I ulimit -v 3000000. I previously had the limit at 2200000 and it worked just fine with ghc-7.10.3. The reason i limit the memory available to ghc is to avoid my machine freezing up due to thrashing (I only have 4GB physical RAM). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14792 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler