#13362: GHC first generation of GC to be as large as largest cache size by default -------------------------------------+------------------------------------- Reporter: varosi | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: 8.6.1 Component: Runtime System | Version: 8.0.2 Resolution: | Keywords: numa cache gc | newcomers Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by varosi): For nursery may be there is no such deal, but see a benchmark made on a small raytracer (https://bitbucket.org/varosi/cgraytrace/overview) that do a lot of allocations on two different machines: https://docs.google.com/spreadsheets/d/1dnhQTrm_EgKab3IJQAC4Rw1IJOfOcryJ56W0... There is a clear difference for different GC sizes. As sizes grow beyond times of needed memory GC is almost not used and then the benefit of larger GC is brought back. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13362#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler