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Date: Wed, 24 Aug 2011 20:47:18 +0200
From: magnum <rawsmooth@...dband.net>
To: john-dev@...ts.openwall.com
Subject: Re: Terrible performance of sha512 (crypt) hash audit
on/for Solaris
On 2011-08-24 20:36, Robert B. Harris wrote:
> Secondly, I'm very surprised at how slow my real world run is, compared to the performance test.
> See, the performance I experienced below for three different builds. Well, maybe just two builds, since omp4 and omp7 performed about the same.
> Is the sha512 hash, or something else, to blame on this poor performance?
> Why such a hudge difference between the test and actual?
The test shows generic crypt() DES.
Try applying my patch "0020" from the wiki (I'm pretty sure it can be
applied right onto a plain jumbo-5) and then run it like this:
$ ./john -test -format=crypt -sub=sha512
Benchmarking: generic crypt(3) [?/64]... (2xOMP) DONE
Many salts: 444 c/s real, 225 c/s virtual
Only one salt: 444 c/s real, 224 c/s virtual
$ ./john -test -format=crypt -sub=sha256
Benchmarking: generic crypt(3) [?/64]... (2xOMP) DONE
Many salts: 384 c/s real, 192 c/s virtual
Only one salt: 384 c/s real, 192 c/s virtual
magnum
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