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Message-ID: <20150915152550.GC850@openwall.com>
Date: Tue, 15 Sep 2015 18:25:50 +0300
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: Judy array
On Tue, Sep 15, 2015 at 09:57:18AM +0200, magnum wrote:
> On 2015-09-15 05:40, Solar Designer wrote:
> >This saves 4 seconds, but only when -mem=999999999 is also used:
> >
> >-WordlistMemoryMap = Y
> >+WordlistMemoryMap = N
>
> FWIW we have -mem=0 as a (somewhat backwards) shortcut for "no limit".
>
> We could probably default to not mmap when that other buffer is used.
> Using mmap doesn't make much sense then anyway (but I never saw any hit
> from it so I opted for simplicity).
>
> >I think there might still be wordlist duplicate suppression going on.
> >It would be nice to try disabling it.
>
> It may currently come with that memory buffer. I'll see what I can do.
Thanks.
> >The addition of source() method for raw-md5 helps a lot. Without it,
> >and without the copy-on-write avoidance in cracker.c, I couldn't run
> >8 processes on this machine without it getting into swap. Perhaps we
> >should add source() to more formats.
>
> I dropped source() from a few formats when I added reversing steps. I
> think I was confused: You can't have source() with a reduced binary -
> but reversing steps does not mandate a reduced binary.
I didn't realize you dropped any of them. Yes, I think you should
re-introduce those.
Alexander
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