GHC 8.4.1-rc1 is slower on a ray-tracer project

[Vassil Ognyanov Keremidchiev]

Those numbers are averaged from 5-10 runs. So there is some slow down for
some reason. It's not great and it's just 3%. But I hoped that 8.4 has more
optimizations and will lead to better performance and not worse.

2018-02-28 17:47 GMT+02:00 David Feuer <david.feuer at gmail.com>:

> I don't see how 62 seconds rather than 60 is anything close to going off
> the rails. Did I read something wrong? This sounds more like a minor wibble.
>
> On Feb 28, 2018 10:32 AM, "Ben Gamari" <ben at well-typed.com> wrote:
>
>> Vassil Ognyanov Keremidchiev <varosi at gmail.com> writes:
>>
>> > Hello!
>> >
>> > I have a small ray-tracer project: https://bitbucket.org/varosi/c
>> graytrace
>> > From time to time I'm testing it with different GHC versions including
>> ARM.
>> >
>> Thanks for doing these tests! I have opened #14870 to make sure we don't
>> lose track of this. It would be interesting to bisect this to see where
>> we went off the rails.
>>
>> This is a very interesting example which the Cabal file says is in the
>> public domain. In principle it would be a nice case to include in nofib,
>> although I suspect it has few too many dependencies.
>>
>> Cheers,
>>
>> - Ben
>>
>>
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