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Re: unconfiguring swap at shutdown
On Tue, 2 Sep 2008 09:04:24 -0700
Jason Thorpe <thorpej%shagadelic.org@localhost> wrote:
> On Sep 1, 2008, at 10:37 PM, Daniel Carosone wrote:
> > The trouble is the unkillable buggers, blocking on some resource
> > that will never become available again, that have gobbled all
> > memory and are the reason for needing the rebbot in the first place.
> It's the kernel talking. There is no such think as an unkillable
> process! There's no reason the kernel can't learn how to awaken a
> blocked process for the purpose of committing suicide.
Well, it hasn't happened yet, and it's been a problem for >30 years...
In principle, you're right; in practice, it's all just signal delivery,
sometimes to processes that appear to be blocked waiting for something
important. We'd need a different mechanism to terminate processes with
very extreme prejudice.
--Steve Bellovin, http://www.cs.columbia.edu/~smb
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