[Haskell-cafe] Re: speed: ghc vs gcc

[Thomas Davie]

On 20 Feb 2009, at 23:52, Bulat Ziganshin wrote:

> Hello Thomas,
>
> Saturday, February 21, 2009, 1:41:24 AM, you wrote:
>
>> You need look no further than the debian language shootout that  
>> things
>> really aren't as bad as you're making out √ Haskell comes in in
>> general less than 3x slower than gcc compiled C.
>
> you should look inside these tests, as i done :)
>
> most of these tests depends on libraries speed. in one test, PHP is
> 1st. from 2 or 3 tests that depends on compiler speed, one was fooled
> by adding special function readInt to ghc libs and the rest are
> written in low-level haskell code - look the sources

Shock news – benchmarks lead to compiler and library optimisations.

News at 11!

>> Of note, of all the managed languages, this is about the fastest √
>> none of the other languages that offer safety and garbage collection
>> etc get as close as Haskell does.
>
> i'm sorry, but this test only shows amount of work spent to optimize
> these programs. results of some tests was made 10-100 times better,
> while improving real programs performance needs much more work :)

I don't get your point at all.  Are you implying that none of the code  
for any of the other languages up there is optimized in any way?

Bob