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Date: Sat, 7 Jul 2012 00:04:15 +0200
From: Frank Dittrich <frank_dittrich@...mail.com>
To: john-dev@...ts.openwall.com
Subject: Between 1.7.9-jumbo-3 and 1.7.9-jumbo-4 performance of --format=bf
 dropped by more than 20%

... and stayed at this level.

Not that 32bit Linux is that important, but on my atom netbook (fedora
16, gcc 4.6.3) i got:


$ ./john-1.7.9-jumbo-3-sse2 --test=10 --format=bf
Benchmarking: OpenBSD Blowfish (x32) [32/32]... DONE
Raw:	216 c/s real, 217 c/s virtual

$ ./john-1.7.9-jumbo-4-sse2 --test=10 --format=bf
Benchmarking: OpenBSD Blowfish (x32) [32/32 X2]... DONE
Raw:	167 c/s real, 167 c/s virtual

and latest git:

$ ./john --test=10 --format=bf
Benchmarking: OpenBSD Blowfish (x32) [32/32 X2]... DONE
Raw:	169 c/s real, 169 c/s virtual


And sse2i with latest git:

$ ./john --test=10 --format=bf
Benchmarking: OpenBSD Blowfish (x32) [32/32 X2]... DONE
Raw:	169 c/s real, 169 c/s virtual


Unfortunately, on github there is no commit between jumbo-3 and jumbo-4,
so I cannot bisect to find out what caused this drop in performance.

(I tested the 64bit Linux build as well, it is not affected.)


Frank

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