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Date: Fri, 21 Aug 2015 09:45:21 +0800
From: Kai Zhao <loverszhao@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: BENCHMARK_LENGTH bugs
On Fri, Aug 21, 2015 at 9:28 AM, Solar Designer <solar@...nwall.com> wrote:
> On Fri, Aug 21, 2015 at 09:16:00AM +0800, Kai Zhao wrote:
>> I think I misunderstood the "slow" which I thought it was the formats
>> whose real speed was small. As magnum said, the "slow" means
>> the speedup from "Only one salt" to "Many salts" is less than 1-2%.
>
> No, you understood "slow" correctly, but as we've seen not every slow
> format has small difference between "Only one salt" and "Many salts".
> $ ../john --test --format=dominosec8
>
> Will run 8 OpenMP threads
> Benchmarking: dominosec8, Lotus Notes/Domino 8 [8/64]... (8xOMP) DONE
> Warning: "Many salts" test limited: 1/256
> Many salts: 3471 c/s real, 435 c/s virtual
> Only one salt: 3303 c/s real, 416 c/s virtual
> $ ../john --test --format=7z
>
> Will run 8 OpenMP threads
> Benchmarking: 7z, 7-Zip (512K iterations) [SHA256 AES 32/64]... (8xOMP) DONE
> Speed for cost 1 (iteration count) of 524288
> Many salts: 3056 c/s real, 3034 c/s virtual
> Only one salt: 18.0 c/s real, 18.1 c/s virtual
The speed of dominosec8 is 3471 c/s, and the speed of 7z is 3056 c/s.
The 3471 c/s and 3056 c/s is not very slow ? There are about 16
formats whose speed is small than 3056 c/s ? What speed can be
recognized as "slow" ?
If I understand "slow" correctly, then the difference between
"Only one salt" and "Many salts" has nothing to do with "slow" ?
Thanks,
Kai
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