[Haskell-cafe] GHC FreeBSD memory model (was: 8.4.3 release)

Ben Gamari ben at smart-cactus.org
Fri Jul 6 02:31:52 UTC 2018

Viktor Dukhovni <ietf-dane at dukhovni.org> writes:

> On Thu, Jul 05, 2018 at 09:32:31AM -0400, Ben Gamari wrote:
>> We use a much different memory allocation strategy on FreeBSD which
>> (AFAIK) does not allow one to reserve address space without also
>> committing.
> Here's a demo of mapping in a 1TB heap on FreeBSD 11.1, on a machine
> with "just" 64GB of RAM and 160GB swap.  I would expect anon memory
> mappings to behave similarly on older systems.
I have opened #15348 [1] to track the issue.


- Ben

[1] https://ghc.haskell.org/trac/ghc/ticket/15348
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