#16065: Stack squeezing during context switches makes for non-determinism in allocations -------------------------------------+------------------------------------- Reporter: sgraf | Owner: (none) Type: task | Status: new Priority: normal | Milestone: ⊥ Component: Runtime System | Version: 8.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #4450, #8861 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonmar): I think we want to leave stack squeezing as it is. How would you make it deterministic? Just saying "only squeeze if we're about to switch to a different thread" would just move the problem to concurrent programs. `+RTS -V0` is a solution that works for both single-threaded and concurrent programs, because it forces the context switches to happen at deterministic times. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16065#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler