#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 rrnewton): Thanks for the perf data! Right, the 200ms isn't really bad. Can anyone reproduce the 8 *minutes* of system time I was seeing on the "ghc-parmake-gsoc" branch? I'd like to figure out whether that problem has anything to do with the patches on #910, or is unrelated. Was there a switch from some other kind of lock to a spin lock at some point? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8224#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler