shrinking memory consumptions

[Jens Axboe]

On Mon, Apr 02 2007, Marcelo Tosatti wrote:
> On Mon, Apr 02, 2007 at 06:20:44PM +0200, Jens Axboe wrote:
> > On Mon, Apr 02 2007, Jim Gettys wrote:
> > > You won't get anyone to take that bet....  Care to work on it?  The
> > > people who've been working the most on providing a decent user interface
> > > experience in the face of OOM are the Nokia folks; I can send you some
> > > contacts.
> > 
> > Didn't figure I would :-) And yeah, I don't mind taking a look at low
> > memory and OOM situations.
> 
> I've been working on a SIGDANGER equivalent for Linux - so that we
> can signal applications once a certain lower limit of memory has been
> reached. I'm currently busy with the resume work, but plan to get back
> to SIGDANGER once we're finished with PM.

Cool. BTW, where do you store your resume stuff?

> We need certainly need to tune the OOM killer - I've done some testing
> with recent v2.6 kernels on our machines and it does behave very badly,
> killing daemons which are not the memory hog in question, for example
> 
> /proc/pid/oom_adj and oom_score need to be adjusted.

Yeah, those are the most trivial bits. In my experience the OOM killer
always gets it wrong, but that's largely because it's never customized.

-- 
Jens Axboe