Date: Wed, 16 Sep 2015 07:26:47 +0300 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: larger bitmaps and hash tables On Wed, Sep 16, 2015 at 06:30:33AM +0300, Solar Designer wrote: > Patch attached. I didn't even try tuning max_keys_per_crypt yet - > I only tried the 5x increase. I similarly didn't try tuning > CRK_PREFETCH yet (it's currently at 64, which is higher than the 60, so > only the latter takes effect). It works very slightly better with 10x increase: self->params.max_keys_per_crypt *= 10; 15x provides no further improvement here. Not multiples of 5 are worse, because: CRK_PREFETCH of 64 turned out to be about optimal, although 60 might be very slightly better for this format and this build (would be 60+60 rather than 64+56). Alexander
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