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[Caml-list] Why systhreads?

Lauri Alanko
- Sven Luther
  - Chris Hecker
    - Basile STARYNKEVITCH
- Vitaly Lugovsky
  - Dmitry Bely
    - Vitaly Lugovsky
      - tim@f...
        
        Vitaly Lugovsky
  - Lauri Alanko
- Christopher Quinn
- Xavier Leroy

Date:	-- (:)
From:	Vitaly Lugovsky <vsl@o...>
Subject:	Re: [Caml-list] Why systhreads?

On Wed, 27 Nov 2002, Tim Freeman wrote:

> > I tried OCaml in a non memory-consuming numerical applications on SMP.
> >Seems to work well enough (100% load of all the processors).
> 
> Wrong metric.  You want speedup, not CPU utilization.  You can get CPU
> utilization for free by running an infinite loop. Did the application
> run anywhere near N times faster when you were using N processors?

 Yes. But, >80% of the system time was in external C functions, without
any memory management. So, really wrong metric...





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