Messages in this thread |  | | Date | Mon, 9 Oct 2000 22:06:02 +0200 (CEST) | From | Ingo Molnar <> | Subject | Re: [PATCH] VM fix for 2.4.0-test9 & OOM handler |
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On Mon, 9 Oct 2000, Andrea Arcangeli wrote:
> > No. It's only needed if your OOM algorithm is so crappy that > > it might end up killing init by mistake. > > 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.
i think the OOM algorithm should not kill processes that have child-processes, it should first kill child-less 'leaves'. Killing a process that has child processes likely results in unexpected behavior of those child-processes. (and equals to effective killing of those child-processes as well.)
But this mechanizm can be abused (a malicious memory hog can create a child-process just to avoid the OOM-killer) - but there are ways to avoid this, eg. to add all the 'MM badness' points to children? Ie. a child which has MM-abuser parent(s) will definitely be killed first.
Ingo
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