Date: Tue, 15 Sep 2015 09:53:52 +0200 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: Judy array On 2015-09-15 09:29, Frank Dittrich wrote: > On 09/15/2015 03:03 AM, Solar Designer wrote: >> magnum - testing this stuff, I see that pot sync is a major bottleneck. >> Since this is your feature, you might want to benchmark and optimize it >> some more, or/and maybe we just want it disabled by default when cracking >> saltless hashes. > > Even with fast salted hashes, it is a problem when you have may be 4 > instances of john running, each with about 2 million hashes, and > cracking many passwords. You are using the default SALT_HASH_LOG of 12, right? You load a thousand times more salts than that number is really good for. Please try bumping it to 22 for the case of 2 million hashes. This will speed up things significantly, not just pot sync. In fact we might want to bump that default a bit (at least in Jumbo). I think we can't make it variable, that would hurt performance. magnum
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