[Haskell-cafe] Getting a breakdown of time spend in compile phases

[Harendra Kumar]

You may want to take a look at this talk
https://www.youtube.com/watch?v=ABScdJqy5wg by Edsko. It talks about
several cases where the compile time may blow up quadratically
depending on the size of the structure. Your problem might be
something similar. Also see
https://hackage.haskell.org/package/large-records .

-harendra

On Sun, 4 Sept 2022 at 02:26, rowan goemans <goemansrowan at gmail.com> wrote:
>
> Hi Hécate,
>
> Thank you this helps a lot. I now at least have confirmed my suspicion that it's the type checker. It spends a whopping 50 seconds in there for a module not even 300 lines of code. Is there someway to analyze the type checker specifically? I know there is tc-trace but that doesn't really tell me what is taking long.
>
> Best regards,
>
> Rowan Goemans
>
> On 9/3/22 20:21, Hécate wrote:
>
> Hi Rowan,
>
> I had a nice experience using https://github.com/codedownio/time-ghc-modules. Do tell us if this fits your needs. :)
>
> Cheers,
> Hécate
>
> Le 3 septembre 2022 16:31:35 rowan goemans <goemansrowan at gmail.com> a écrit :
>
>> Dear Cafe,
>>
>> I have a Haskell Project where I have a module that quite heavily makes
>> use of constraints and takes ages to compile per module. It also uses
>> some type checker plugins but I'm unsure if they are causing the
>> slowness. So what I would like to see is a breakdown of how much time
>> GHC is spending on compilation of a module. Does something like this exist?
>>
>> Best regards,
>>
>> Rowan Goemans
>>
>> _______________________________________________
>> Haskell-Cafe mailing list
>> To (un)subscribe, modify options or view archives go to:
>> http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
>> Only members subscribed via the mailman list are allowed to post.
>
>
> _______________________________________________
> Haskell-Cafe mailing list
> To (un)subscribe, modify options or view archives go to:
> http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
> Only members subscribed via the mailman list are allowed to post.