john-users - RE: Contributing significant changes to the jumbo patch (mostly performance improvements)

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Date: Fri, 10 Jul 2009 15:49:52 -0500
From: "Jim" <jfoug@....net>
To: <john-users@...ts.openwall.com>
Subject: RE: Contributing significant changes to the jumbo patch 	(mostly performance improvements)

Patch:  john-1.7.3.1-all-5-rawMD5-SSE2-1.diff

This patch adds MMX and SSE2 to the existing rawMD5.  All 3 methods
will do blocks of 64 passwords per each crypt-all call (or at least
'up' to 64).

A 1.5 to 2x improvement in speed, depending upon the core.  The code
used was from md5-mmx.S (and stages-*-md5.S).

Had to do in blocks of 64, or serious performance hit was seen, due
to too much file IO (ftell() calls).

Jim.

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