Re: [PATCH] a simple OOM killer to save me from Netscape

[Rik van Riel <riel@conectiva.com.br>]

On Mon, 16 Apr 2001, Jonathan Morton wrote:

> >Ideally, I'd SIGSTOP each thrashing process. That way, enough
> >processes can be swapped out and KEPT swapped out to allow others to
> >complete their task, freeing up physical memory. Then you can SIGCONT
> >the processes you suspended, and make progress that way. There are
> >risks of "deadlocks", of course - suspend X, and all your graphical
> >apps will lock up waiting for it. This should lower VM pressure enough
> >to cause X to be restarted, though...
> 
> Strongly agree.  Two points that need defining for this:
> 
> - When does a process become "thrashing"?  Clearly paging-in in itself is
> not a good measure, since all processes do this at startup - paging-in
> which forces other memory out, OTOH, is a prime target.
> 
> - How long do we suspend it for?  Does this depend on how many times it's
> been suspended recently?

I'm already working on something like this. 

Rik
--
Virtual memory is like a game you can't win;
However, without VM there's truly nothing to lose...

		http://www.surriel.com/
http://www.conectiva.com/	http://distro.conectiva.com.br/

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