#14192: Change to 1TB VIRT allocation makes it impossible to core-dump Haskell programs -------------------------------------+------------------------------------- Reporter: nh2 | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Runtime System | Version: 8.0.2 Resolution: | Keywords: gdb, | debugging Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #9706 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by nicolast): I guess setting the `MADV_DONTDUMP` flag on the region using `madvise(2)`, then resetting the flag when chunks of said memory are being used, could work. Not sure about the performance impact of setting and resetting that flag over and over... May make sense to do it over chunks of, say, 32MB at a time, which would still result in 'large' (though likely very compressable) coredumps for small programs, yet manageable. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14192#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler