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Date: Mon, 22 Dec 2014 20:29:22 +0300
From: Solar Designer <>
Subject: Re: ARM exynos 5410 benchmark results

On Mon, Dec 22, 2014 at 05:58:32PM +0100, wrote:
> In message <>, Solar Designer writes:
> > This looks good for a (presumably) low-power CPU.
>   I haven't measured it, but should stay well below 20 Watt at full
> speed.

20W would be A LOT for this CPU and these speeds.  I'd expect something
under 5W.  What's the official TDP for it?

For example, here's JtR 1.8.0 built with "gcc version 4.8.2 (Alpine
4.8.2)" running on:

model name      : Intel(R) Pentium(R) CPU  N3530  @ 2.16GHz

Per Intel, this quad-core x86 CPU has TDP 7.5W, SDP 4.5W.

Will run 4 OpenMP threads
Benchmarking: descrypt, traditional crypt(3) [DES 128/128 SSE2-16]... DONE
Many salts:     6239K c/s real, 1562K c/s virtual
Only one salt:  5147K c/s real, 1291K c/s virtual

Benchmarking: bsdicrypt, BSDI crypt(3) ("_J9..", 725 iterations) [DES 128/128 SSE2-16]... DONE
Many salts:     199884 c/s real, 49921 c/s virtual
Only one salt:  186777 c/s real, 46647 c/s virtual

Benchmarking: md5crypt [MD5 32/64 X2]... DONE
Raw:    22349 c/s real, 5848 c/s virtual

Benchmarking: bcrypt ("$2a$05", 32 iterations) [Blowfish 32/64 X2]... DONE
Raw:    1892 c/s real, 473 c/s virtual

Benchmarking: LM [DES 128/128 SSE2-16]... DONE
Raw:    28468K c/s real, 7124K c/s virtual

Benchmarking: AFS, Kerberos AFS [DES 48/64 4K]... DONE
Short:  234342 c/s real, 234342 c/s virtual
Long:   532377 c/s real, 532377 c/s virtual

Benchmarking: tripcode [DES 128/128 SSE2-16]... DONE
Raw:    4022K c/s real, 1010K c/s virtual

Benchmarking: dummy [N/A]... DONE
Raw:    16308K c/s real, 16276K c/s virtual

john-1.7.9-jumbo-7 has faster md5crypt:

Benchmarking: FreeBSD MD5 [128/128 SSE2 intrinsics 12x]... (4xOMP) DONE
Raw:    53184 c/s real, 13296 c/s virtual

(I ran these benchmarks before we released john-1.8.0-jumbo-1.)

Surely ARM should be more energy-efficient than x86, especially at the
lower clock rate, so perhaps your CPU's TDP is below this one's 7.5W.
On the other hand, it's 22nm (Intel) vs. 28nm.

> > Can you please add these benchmarks to
> > along with precise JtR version
> > info?
>   Done. Please let me know if anything is needs to change.

Yes: I think you wrongly stated that you ran 8 threads.  I think you
only ran 4.  If so, please correct that little detail.



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