#9979: Performance regression GHC 7.8.4 to GHC HEAD -------------------------------------+------------------------------------- Reporter: alanz | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.11 Resolution: | Keywords: regression Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by hvr): Maybe another example to investigate is `cabal install text`, which went from 30 secs on GHC 7.4 to 90 secs on GHC 7.10: {{{ attoparsec-0.10.4.0 GHC-7.10.0.20141227 text-1.2.0.4 # 92668ms attoparsec-0.10.4.0 GHC-7.8.4 text-1.2.0.4 # 65736ms attoparsec-0.10.4.0 GHC-7.6.3 text-1.2.0.4 # 27520ms attoparsec-0.10.4.0 GHC-7.4.2 text-1.2.0.4 # 31303ms }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9979#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler