Change to 1TB VIRT allocation makes it impossible to core-dump Haskell programs
GHC 8.0.2 on Linux changed the memory allocator to always allocate 1TB virtual memory on startup (#9706 (closed)).
I now have a production Haskell program running in a loop and would like to debug where it is stuck, on another machine, thus attaching with gdb -p
and running generate-core-file
.
But core dumping takes forever, I Ctrl-C'd it when it reached 140 GB in size (my machine only has 64 GB RAM btw.); after the Ctrl-C the size of the core file on the file system was reported as 1.1T
(probably it's a sparse file now).
Is there a workaround for this?
For example, if I could dump only the resident or actually allocated pages, that would probably help.
Trac metadata
Trac field | Value |
---|---|
Version | 8.0.2 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Runtime System |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | nh2 |
Operating system | |
Architecture |