Date: Mon, 14 Sep 2015 15:32:59 +0300 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: bt.c initial table size Sayantan, On Mon, Sep 14, 2015 at 07:47:37AM +0530, Sayantan Datta wrote: > How would you like to request the table size - the exact table size or a > multiplier(as in table size = num_loaded_hashes * multiplier + prime) . > Also, if you request a larger table size, you are not guaranteed that it > will 'build the tables on first try', however, the probability of that > happening is definitely higher. I think request it via the multiplier, and it should be possible to reuse a table size multiplier that a previous invocation of john tuned itself to (in other words, those "trying next table size" lines should include the multiplier value being tried next - and yes, they should only use sizes that can later be requested explicitly). Also, you already have some heuristics to determine initial multiplier_ot and dupe_remove_ht_sz based on num_ld_hashes, but I got so many "trying next table size" messages that I think those hardcoded defaults need to be re-tuned. Thanks, Alexander
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