Date: Wed, 1 Apr 2015 10:37:21 +0300 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: Advice on proposal: John the Ripper jumbo robustness On Wed, Apr 01, 2015 at 02:51:59AM +0300, Alexander Cherepanov wrote: > On 2015-03-29 14:08, Kai Zhao wrote: > >>it might be more of a distraction from focusing the actual fuzzing jobs. > > > >Yes, I agree with you. It would be better to focus the actual fuzzing job. > > The first thing to do with fuzzing john is making john start fast. > > I've taken a look at it. There are two easy things here: instrumenting > only a fuzzed format and john.c make john ~5x faster, removing most > content from john.conf makes john ~7x faster. That's 35x boost. > > Solar, magnum, any other easy ways to make john start faster? I am surprised by your reported 35x boost from those changes, so I'll refrain from making guesses. You've asked Kai to profile things, and that's right. > Kai, could you try to profile john starting process and find out where > most of the time is spent? Alexander
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