Re: [Caml-list] Scheduling thread problem kernel 2.6

[Christophe Raffalli <Christophe.Raffalli@univ-savoie.fr>]

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David Brown wrote:
> On Tue, Apr 13, 2004 at 09:57:35AM +0200, Christophe Raffalli wrote:
> 
>>Message posted to comp.os.linux.misc and caml-list.
>>
>>I am having a scheduling problem with a Caml program that uses two threads:
>>- one CPU intensive thread
>>- one interface thread (using Glut + OpenGL) and often doing nothing
> 
> 
> What wrappers are you using to call to the interface.  Are there any
> blocking calls in it?  You might check the wrappers to these calls to
> make sure that they call enter_blocking_section, and
> leave_blocking_section.  Otherwise, the entire ocaml runtime will be
> blocked.

I do not understand ? First I launch the interface thread from Caml with
Thread.create and the interface thread calls Glut.main_loop which never 
ends (except when the program terminates). This main loop call some Caml 
functions.

The interface thread (which is the main thread) is affected a lot may be 
because the main_loop sleep while retaining a mutex blocking the 
computing thread. This is hat you mean ?

> Dave

-- 
Christophe Raffalli
Université de Savoie
Batiment Le Chablais, bureau 21
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tél: (33) 4 79 75 81 03
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mail: Christophe.Raffalli@univ-savoie.fr
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