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Date: Mon, 28 May 2012 21:55:47 -0400
From:  <jfoug@....net>
To: john-dev@...ts.openwall.com
Cc: magnum <john.magnum@...hmail.com>
Subject: Re: memory usage within JtR and possible ways to
 significantly reduce it.

---- magnum <john.magnum@...hmail.com> wrote: 
> These patches are now reverted in magnum-jumbo. They are kept in
> bleeding-jumbo.

I will spend a little time getting this done as a patch to magnum-jumbo.  I will rip out almost all modified formats, and simply change the null pointer for get_source to point to fmt_default_get_source.  Removing the modifications to all the formats should make the patch a little more stable against changes, but likely this patch will be a PITA, and I am hopeful that we can get this into a jumbo quickly.  

NOTE, this modification greatly improves the scalability of JtR.  Yes, we may need to smooth out  a bug or 2, but this simple modification does reduce the memory footprint by 40% or more.  Also, I have seen speed improvements, on huge data set's and Magnum was mentioning improvements in self test speeds.

Jim.

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