#8224: Excessive system time -- new IO manager problem? -------------------------------------+------------------------------------- Reporter: rrnewton | Owner: Type: bug | Status: new Priority: high | Milestone: 7.8.1 Component: Runtime System | Version: 7.7 Resolution: | Keywords: IO Manager, Operating System: Linux | System Time Type of failure: Runtime | Architecture: x86_64 (amd64) performance bug | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------- Comment (by AndreasVoellmy): I ran with mutrace and did see any obvious explanations. Is it possible that by having more safe foreign calls RTS threads spend more time in some spin locks? If so, which spin locks would those be? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8224#comment:16 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler