#7606: Stride scheduling for Haskell threads with priorities ---------------------------------+------------------------------------------ Reporter: ezyang | Owner: ezyang Type: feature request | Status: new Priority: normal | Milestone: 7.8.1 Component: Runtime System | Version: 7.7 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by ezyang): Some other interesting results about sleeper fairness: for most benchmarks, it doesn't have much effect, but threads003 displays some interesting behavior (this comparison is before and after sleeper fairness is applied): {{{ Program Size Allocs Runtime Elapsed TotalMem -------------------------------------------------------------------------------- threads003 -0.0% +9.0% -8.8% -8.9% +20.2% }}} So, changing how we schedule blocked threads (i.e. giving them a priority boost) results in a 10% speedup, but we end up using 20% more memory! A very interesting tradeoff, if you ask me... -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7606#comment:25 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler