Re: [patch] 2.2.10 buffer patch (OOM)

Bernhard Kaindl (bk@suse.de)
Fri, 16 Jul 1999 01:49:24 +0000 (/etc/localtime)

On Fri, 9 Jul 1999, Frank van Maarseveen wrote:
>
> On Thu, Jul 08, 1999 at 08:03:18PM +0200, Andrea Arcangeli wrote:
> > o kupdate replaces completly update. It's a separate and alone
> > kernel daemon. It has no way to be killed and it won't be swapped
> > out. We need kupdate mainly if the machine goes OOM.
>
> I never realized this could happen. Occasionally some of our machines runs
> out of memory because of bad user programs. But, instead of moving every
> program to the kernel why not creating a kind of "minfree" parameter
> for memory+swap instead? This has already been done for file systems

Not instead, _additionally_. kupdate is just to be sure the you have disk
updates as long as possible...

> and IMO it makes sense to do this for memory+swap as well. Whenever
> an essential daemon runs as non-root then that might be handled by doing
> something like
>
> echo 0 >/proc/$!/cap/minfreemem
>
> in the corresponding startup script, should it be necessary. Not
> all daemons are essential for proper operation of the system.
> I guess one must be root to change the capabilities in this case.
>

Of course, i think this will come.

-- 


 - Bernd






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