[Haskell-cafe] Getting used and available memory

[Don Stewart]

We could bind to Rts.c in the GHC runtime, and get all the stats
programmatically that you can get with +RTS -s

mads.lindstroem:
> Hi
> 
> I was _not_ looking for the OS-level measure, but rather something
> reported by the run-time. Thanks you for the answer anyway.
> 
> /Mads
> 
> On Tue, 2010-04-27 at 15:32 -0400, Daniel Peebles wrote:
> > It's not an easy measurement to even define. There was a huge debacle
> > recently about a windows program that reported misleading numbers
> > about used memory. The fact that GHC has its own allocator and "hogs"
> > OS memory (it never returns it to the OS) might complicate the
> > definition further. But in general, if you're looking for an OS-level
> > measure you're probably going to need to go to the FFI and talk to the
> > specific OS's API for the task. I'm not sure if the GHC runtime allows
> > you to ask much about allocated memory. The only thing I've done with
> > it was FFI out to a variable that counts the number of bytes allocated
> > to measure allocations in calls like GHCi does. 
> > 
> > On Tue, Apr 27, 2010 at 12:01 PM, Mads Lindstrøm
> > <mads.lindstroem at gmail.com> wrote:
> >         Hi
> >         
> >         I have tried haskell.org, Google and Hoolge, but I cannot find
> >         any
> >         function to give me the available and/or used memory of a
> >         Haskell
> >         program. Is it just not there? Or am I missing it somehow?
> >         
> >         
> >         /Mads
> >         
> >         
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> > 
> > 
> 
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