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Date: Wed, 10 Aug 2016 18:30:46 +0200
From: Marek Wrzosek <marek.wrzosek@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: How long should I let JtR munch?
Hi Skip,
W dniu 10.08.2016 o 16:18, Skip Montanaro pisze:
>
> I fed it a few raw MD5 encrypted passwords yesterday. JtR has now been
> running for about 18 hours (--fork=4) and has yet to crack any of them. My
> machine is just a quad-core Intel Xeon (3.1ghz). Is there some way to
> compare it with some faster machines using their graphics cards? Is it
> possible to say something like, "if it doesn't complete in 24 hours on my
> machine, it would be the equivalent if not completing in N hours (N < 24)
> on a more studly machine?" Finally, on a related note, is there some way to
> tell which mode it's in? It's just running like this:
>
You can run
./john --test
and compare your results with other people results. You can search for
'john the ripper benchmarks' or compare with these
<http://openwall.info/wiki/john/benchmarks>.
> ./john --format=Raw-MD5 --fork=4 ~/tmp/sample.txt
>
> I believe it will automatically work its way through the various modes
> <http://www.openwall.com/john/doc/EXAMPLES.shtml> it has. How do I know
> what mode it's in at any given time? Here's recent status output:
>
Yes, it does. If you run john without specified mode, then john will run
single, wordlist and incremental modes with default parameters.
> % ./john --status
> 1 0g 0:18:08:50 3/3 0g/s 24709Kp/s 24709Kc/s 123549KC/s
> 2 0g 0:18:08:50 3/3 0g/s 24371Kp/s 24371Kc/s 121858KC/s
> 3 0g 0:18:08:50 3/3 0g/s 24664Kp/s 24664Kc/s 123322KC/s
> 4 0g 0:18:08:50 3/3 0g/s 25029Kp/s 25029Kc/s 125148KC/s
>
^this (3/3) indicate that john is now in incremental
mode for
^18 hrs 8 mins and 50 secs and one of
^.............................^ these
numbers (in Kp/s, Kc/s and KC/s) will tell you how fast john is working
But I'm not sure which one of them you should compare against other
people benchmarks.
I hope this would be helpful.
Best regards,
Marek
--
Marek Wrzosek
marek.wrzosek@...il.com
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