Re: [PATCH] VM fix for 2.4.0-test9 & OOM handler

From: Philipp Rumpf (prumpf@parcelfarce.linux.theplanet.co.uk)
Date: Tue Oct 10 2000 - 10:24:12 EST


On Tue, Oct 10, 2000 at 12:06:07PM -0300, Rik van Riel wrote:
> On Tue, 10 Oct 2000, Philipp Rumpf wrote:
> > > > The algorithm you posted on the list in this thread will kill
> > > > init if on 4Mbyte machine without swap init is large 3 Mbytes
> > > > and you execute a task that grows over 1M.
> > >
> > > This sounds suspiciously like the description of a DEAD system ;)
> >
> > But wouldn't a watchdog daemon which doesn't allocate any memory
> > still get run ?
>
> Indeed, it would. It would also /prevent/ the system
> from automatically rebooting itself into a usable state ;)

So it's not dead in the "oh, it'll be back in 30 seconds" sense. So our
behaviour is broken (more so than random process killing).

> > You care about getting an automatic reboot. So you need to be sure the
> > watchdog daemon gets killed first or you panic() after some time.
>
> echo 30 > /proc/sys/kernel/panic

that's what I said. we need to be sure to _get_ a panic() though.
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