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Date:      Tue, 7 Aug 2001 13:29:25 -0700 (PDT)
From:      Julian Elischer <julian@elischer.org>
To:        "Semen A. Ustimenko" <semenu@FreeBSD.org>
Cc:        freebsd-hackers@FreeBSD.org
Subject:   Re: Kernel stack size
Message-ID:  <Pine.BSF.4.21.0108071326430.70956-100000@InterJet.elischer.org>
In-Reply-To: <Pine.BSF.4.21.0108080053020.5700-100000@default>

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On Wed, 8 Aug 2001, Semen A. Ustimenko wrote:

> Hi! Thanks for light speed response!
> 
> On Tue, 7 Aug 2001, Julian Elischer wrote:
> 
> > the kernel stack is a VERY LIMITED resource
> > basically you have about 4 or 5 Kbytes per process.
> Oops... And there is no hope to enlarge it?

none really. 
that's the way it is in all kernels..
The kernel is a very limited environment.

> 
> > if you overflow it you write over your signal information..
> > 
> That's what i'm seeing. SIGPROF, particulary.
> 
> > you should MALLOC space and use a pointer to it..
> > 
> But this is loss of speed, isn't it?

a little but maybe not as much as you think..
malloc is pretty quick. If you are doing it a lot, you might even consider
caching the memory blocks..


> 
> Bye!
> 
> 


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