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Date: Tue, 4 Sep 2012 05:58:21 +0400
From: Solar Designer <>
Subject: Re: memory usage (was: [john-users] JTR against 135 millions MD5 hashes)

On Tue, Sep 04, 2012 at 05:49:00AM +0400, Solar Designer wrote:
> Also, for saltless hashes we only need one bitmap and one hash table.
> That's for the entire john process.  When its total allocation size is
> multi-gigabyte, spending 272 GiB (if I calculated correctly) on a bitmap
> and a hash table combined is not a problem.  (In fact, I think we should
> introduce even larger bitmaps and hash tables to better handle cases
> like that - this is on my to-do.)  Before the introduction of bitmaps,
> we were spending 1 GiB.

Of course, I meant "272 MiB", not "272 GiB", in the quote above.


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