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Date: Fri, 18 Sep 2015 17:29:01 +0200
From: Frank Dittrich <>
Subject: Re: bitmap & hash table prefetching

On 09/18/2015 04:50 PM, Solar Designer wrote:
> The attached patch does that, and it assumes that "binary" itself is
> allocated right after the tiny struct, so doesn't need to be prefetched
> separately.  This should be suitable for commit now.
> The 29M testcase:
> real    0m40.821s
> user    2m55.786s
> sys     0m14.104s

I think as long as we have unresolved new bugs that prevent reliably
cracking hashes, further performance optimization doesn't make that much


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