From: Michael Concannon <mike@xxxxxxxxxxxxx>
To: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
CC: lokum spand <lokumsspand@xxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx
Subject: Re: A possible idea for Linux: Save running programs to disk
Date: Sat, 01 Oct 2005 18:21:37 -0400
Arjan van de Ven wrote:
On Sat, 2005-10-01 at 13:30 -0800, lokum spand wrote:There are a few cluster/parallel computing libraries out there that are starting to allow "process migration"...
I allow myself to suggest the following, although not sure if I post in
the right group:
Suppose Linux could save the total state of a program to disk, for
instance, imagine a program like mozilla with many open windows. I give
it a SIGNAL-SAVETODISK and the process memory image is dropped to a
file. I can then turn off the computer and later continue using the
program where I left it, by loading it back into memory.
Would that be possible? At least a program can be given a ctrl-z and is
there is a LOT of state though.. the moment you add networking in the
picture the amount of state just isn't funny anymore. Your X example is
a good one as well...
One would assume that "saving it to a disk" is simply a degenerate case of migrating the process...
Presuming they have process migration working (and it seemed close a while ago when I last looked), saving to a file might already be supported... I'd google "process migration" and you are likely to find a lot of discussion on this topic...
/mike
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