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Date: Mon, 6 May 2013 19:15:02 -0400
From: Rich Rumble <richrumble@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: --fork under Cygwin
On Mon, May 6, 2013 at 6:46 PM, <jfoug@....net> wrote:
> I would REALLY like someone else that has worked with this look at it,
> before I poopoo it. I have never used fork before, and simply tried to run
> with a 1 hash file, and -fork -inc:all. It wrote some fork messages out
> (4 of them, I think). There were numerous johns running, some listed as
> <defunct> some said they were running. Also numerous bashes. It 'appeared'
> like what I would expect for a forking process. However, things were not
> running, and were NOT killable. The processes would not even go away with
> a kill from another shell, or any amount of ^C's or ^D's I had to use a
> win32 process manager to clean up the mess.
>
I've had that happen, john forks into it's processes, loads the hashes, and
6 out of 8 (for example) never use any CPU. The very first or second
contest version I had the least trouble with, but it was also used the
least. The main issue initially as I saw it was the forks were not saving
cracks to the pot, but would print to the screen, so if I diff'd the screen
output and the POT file, I'd have very different results. magnum(i think?)
introduced a switch in the config to write cracks to the stats file which
works well. I need to compile a recent version of Fork/Node on cygwin and
report back. I'm out for a bit, but I should have more in 24hrs or so to
report on my own testing. Might want to search out some of my old Fork/Node
emails...
-rich
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