#8027: Adding one call to getNumCapabilities triggers performance nose dive (6X slowdown) ---------------------------------+------------------------------------------ Reporter: rrnewton | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Runtime System | Version: 7.6.3 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: Runtime performance bug Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by rrnewton): Replying to [comment:3 rrnewton]:
(I'm trying to run with 7.7.20130628 but having trouble installing the vector package at this moment...)
By the way, I'm continuing to update the reproducer -- to get it working with 7.7 and to shrink it further -- on the "ghcbug" branch of this repository: https://github.com/iu-parfunc/lvars/tree/ghcbug -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/8027#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler