#13426: compile-time memory-usage regression for DynFlags between GHC 8.0 and GHC 8.2 -------------------------------------+------------------------------------- Reporter: hvr | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.2.1 Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D3399, Wiki Page: | Phab:D3400, Phab:D3421 -------------------------------------+------------------------------------- Comment (by dfeuer): I made the big hammer smaller (see Phab:D3606). Things don't go utterly disastrous, but there are still a few modules over a gigabyte (max somewhere around 1700M). I'm not sure exactly which ones; is there a way to find out without doing a single-threaded build? I'll try to do some profiling and see if I can figure out what's going wrong, exactly. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13426#comment:39 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler