Date: Fri, 18 Sep 2015 19:07:40 +0200 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: bitmap & hash table prefetching On 2015-09-18 16:50, Solar Designer wrote: > On Thu, Sep 17, 2015 at 07:09:30PM +0300, Solar Designer wrote: >> FWIW, the patch that I posted, which works best for me and which is >> now committed, prefetches only bitmap elements and then hash table >> elements for which the bitmap indicates a hit. It does not prefetch >> "struct db_password *pw" (from which we're using the "binary" and >> "next_hash" fields), nor pw->binary (I mean the actual binary here, >> whereas the "binary" field is just a pointer). > > 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. Committed now. magnum
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