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Message-ID: <20241008002906.GA2378@openwall.com>
Date: Tue, 8 Oct 2024 02:29:06 +0200
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: slow progress after --restore
On Mon, Oct 07, 2024 at 04:23:54PM -0700, jeff wrote:
> >Well, I can only confirm that what you observe is unexpected. We
> >checkpoint often, and moreover if you interrupt a session cleanly then
> >the latest state is saved at that time.
> >
> >This could be a bug, or it could be something specific to your usage.
>
> Is it possibly related to the --fork=22 on the command line?
If it's a bug, then of course it could be related to anything, until we
know what it is. However, --fork isn't supposed to cause this problem.
> Is it possible that the 'rule' starts running from the start when restarted?
This isn't supposed to be the case - we record both the rule and the
place in the wordlist. However, even if it were the case, it would not
cause the exact behavior you observe - with fast hashes like NT, it
doesn't take long (not anywhere near as long as 8000 seconds) for one
rule to complete and advance to the next one.
> I know the behavior is odd, which is why I am reporting it, and would
> like t see it fixed.
> I have observed it several times.
> This is for my 64 core amd epyc milan system, if that matters.
>
> Tomorrow, (patch tuesday) I will be restarting my computer and restoring
> the john session
> and I am pretty confident I will see the same issue again :-(
Please let us know of your results after the restore tomorrow.
When you later start an entirely new session, you may want to omit the
--no-log option and examine the log files. Unfortunately, there's no
user-friendly way to do that for an existing session you --restore, if
you had specified this option when you first started the session.
Alexander
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