Re: Memory management in Kernel 2.4.x

Alan Cox (alan@lxorguk.ukuu.org.uk)
27 May 2002 23:48:46 +0100


On Mon, 2002-05-27 at 22:22, H. Peter Anvin wrote:
> Followup to: <1022513156.1126.289.camel@irongate.swansea.linux.org.uk>
> By author: Alan Cox <alan@lxorguk.ukuu.org.uk>
> In newsgroup: linux.dev.kernel
> >
> > On a -ac kernel with mode 2 or 3 set for overcommit you have to run out
> > of kernel resources to hang the box. It won't go OOM because it can't.
> > That wouldn't be a VM bug but a leak or poor handling of kernel
> > allocations somewhere. Sadly the changes needed to do that (beancounter
> > patch) were things Linus never accepted for 2.4
> >
>
> Well, if you can't fork a new process because that would push you into
> overcommit, then you usually can't actually do anything useful on the
> machine.

Thats actually easy to deal with and on my list for modes 4 and 5 (2 and
3 with root granted a reserved fraction)

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