#14193: Add RTS flag to disable 1TB address space allocation -------------------------------------+------------------------------------- Reporter: nh2 | Owner: (none) Type: feature request | Status: patch Priority: normal | Milestone: Component: Compiler | Version: 8.0.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #9706, #14192 | Differential Rev(s): Phab:D3929 Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonmar): We didn't measure the effect of making it runtime-selectable. You're welcome to try measuring it, but my concern is that it's likely to be around 1% overall, and that's at the level where we care, but it's difficult to measure accurately given the benchmarks and tools we have. nofib almost certainly won't be able to measure it, because most of the programs in there don't do much GC. You can try nofib/parallel, but those tend to be a bit noisy. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14193#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler