#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): Wiki Page: | -------------------------------------+------------------------------------- Comment (by hvr): Ben suggested that reverting 2effe18ab51d66474724d38b20e49cc1b8738f60 could have an interesting effect... however it appears to have things worse :-) {{{ <<ghc: 60080847424 bytes, 4089 GCs, 436124979/1969454128 avg/max bytes residency (24 samples), 5367M in use, 0.000 INIT (0.000 elapsed), 33.164 MUT (34.275 elapsed), 28.562 GC (28.606 elapsed) :ghc>> }}} I'll attach `--verbose` output as well -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13426#comment:3> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler