OOM problem?

[Larry McVoy]

On Fri, Dec 08, 2017 at 12:16:58PM +0200, Konstantin Belousov wrote:
> On Fri, Dec 08, 2017 at 08:18:21AM +0000, Johannes Lundberg wrote:
> > Regarding potential oom overhaul. Personally I like the idea of an oom
> > signal. The idea comes from iOS where applications get a callback when
> > system memory is low and they're given a chance to free unused
> > resources or resources that can easily be recreated, before getting
> > killed completely.
> The OOM signal is a topic which was discussed to death many times before.
> The summary is that it does not work, because you need to provide pages
> for userspace to be able to handle the signal.

Just for the record, what I was proposing wasn't as ambitious as what 
Johannes suggested (while I like his idea it's "weird" and it's unlikely
that Firefox et al would use it unless we got Linux to have the same 
thing).

I was just suggesting that processes sleeping in vm_wait() wake up once
in a while to respect signals, as in, if I kill -9 that process I want it
to go away.  Currently, it doesn't.
-- 
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Larry McVoy            	     lm at mcvoy.com             http://www.mcvoy.com/lm