Can some throw bright light on Linux Memory Allocation

[MirJafar Aki]

Hi Rashkae,

Thanks for great explanation and the link. It was really useful
to understand the aggessive optimization done by OS.

Thanks.
Mir

On Thu, Aug 7, 2008 at 8:24 PM, Rashkae <ubuntu at tigershaunt.com> wrote:

> Rashkae wrote:
>
> >>
> >
> > It's been a while since I read up on this and and my terminology will be
> > way off, (as well, some of my information will be out of date.)
> >
> > The short of it, Linux doesn't allocate memory absolutely on malloc.
> > You can malloc more memory than you have available, but will fail when
> > you application tries to fill this memory and the system runs out.  This
> > is a deliberate design decision done for performance and or other
> > esoteric reasons beyond my ken.  I also had some sample code of an app
> > that would malloc large memory, then try to fill that memory and the app
> > itself would in theory end gracefully if the memory proved unavailable.
> >  In practice, bad things tend to happen to the whole system once you hit
> > OOM.
> >
>
> BTW, first google hit for Linux Memory Allocation
>
> http://www.linuxdevcenter.com/pub/a/linux/2006/11/30/linux-out-of-memory.html
>
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