Increased memory usage with GHC 7.10.1

[George Colpitts]

Should we recommend that all library developers compile their libraries
with a max heap of 4G (to pick an arbitrary number) so that we can catch
some of these issues earlier?

On Fri, May 1, 2015 at 5:42 AM, Paolino <paolo.veronelli at gmail.com> wrote:

> Hello, I'm using ghc 7.10.1 to compile OpenGLRaw which is now impossible
> with -O1 and -O2 due to "ghc : out of memory error" on a 4GB linux host.
> The file making memory explode is  Graphics.Rendering.OpenGL.Raw.Functions
> <https://hackage.haskell.org/package/OpenGLRaw-2.4.1.0/docs/src/Graphics-Rendering-OpenGL-Raw-Functions.html>.
> With -O0 it uses 600 MB.
>
> The file is really huge, but I could compile it with prior versions of ghc.
>
> Regards
>
> paolino
>
> 2015-04-17 1:33 GMT+02:00 David Laing <dave.laing.80 at gmail.com>:
>
>> Hi all,
>>
>> I've been playing around with profiling GHC recently, so I thought I'd
>> chime in with a pointer that might save people searching for the right docs
>> - you could configure a cabal sandbox to work with multiple version of ghc,
>> which I've found useful:
>>
>>
>> https://www.haskell.org/cabal/users-guide/installing-packages.html#sandboxes-advanced-usage
>>
>> Cheers,
>>
>> Dave
>>
>> On Fri, Apr 17, 2015 at 6:01 AM, Michal Terepeta <
>> michal.terepeta at gmail.com> wrote:
>>
>>> Hi Richard,
>>>
>>> Thanks updating the ticket! What I did was: build GHC HEAD/7.8.4 with
>>> build flavor 'prof' then get the haskell-src-exts sources, install the
>>> dependencies and finally add +RTS -p -RTS to the cabal file and compile it,
>>> the resulting ghc.prof contains the profiling information.
>>>
>>> For anyone interested about CallArity slowness, the problem is tracked
>>> in https://ghc.haskell.org/trac/ghc/ticket/10293
>>>
>>> Cheers,
>>> Michal
>>>
>>> On Wed, Apr 15, 2015 at 1:40 AM Richard Eisenberg <eir at cis.upenn.edu>
>>> wrote:
>>>
>>>> I've pasted Michal's numbers in #9630, which seems like a good place to
>>>> track this. Michal, would you mind fleshing out a bit precisely what you
>>>> did to get those numbers? That would be helpful (though you've already been
>>>> very helpful indeed in getting the data together)!
>>>>
>>>> Thanks,
>>>> Richard
>>>>
>>>> On Apr 14, 2015, at 9:09 PM, Joachim Breitner <mail at joachim-breitner.de>
>>>> wrote:
>>>>
>>>> > Hi,
>>>> >
>>>> > Am Dienstag, den 14.04.2015, 21:54 +0200 schrieb Michal Terepeta:
>>>> >> On Mon, Apr 13, 2015 at 10:34 PM, Christiaan Baaij
>>>> >> <christiaan.baaij at gmail.com> wrote:
>>>> >>> Actually, I meant only with -fno-specialise.
>>>> >>
>>>> >> Done. Helps quite a bit but CallArity is still a pretty expensive.
>>>> >
>>>> > I’m on that, and I think I have a quite neat fix for it. I’ll report
>>>> on
>>>> > that in the trac ticket:
>>>> > https://ghc.haskell.org/trac/ghc/ticket/10293#comment:4
>>>> >
>>>> > Greetings,
>>>> > Joachim
>>>> >
>>>> > --
>>>> > Joachim “nomeata” Breitner
>>>> >  mail at joachim-breitner.de • http://www.joachim-breitner.de/
>>>> >  Jabber: nomeata at joachim-breitner.de  • GPG-Key: 0xF0FBF51F
>>>> >  Debian Developer: nomeata at debian.org
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>>>> >
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