Date: Thu, 5 Jul 2012 11:24:59 +0800 From: myrice <qqlddg@...il.com> To: john-dev@...ts.openwall.com Subject: About very high memory usage I find JtR will use very high memory in real test. Here is what I observed: In my xsha512-cuda, I set MIN_KEYS_PER_CRYPT=MAX_KEYS_PER_CRYPT = 128*1024. So it allocates 128*1024 keys and hashes. For each key, we have 125 char and a byte of length which is totally 126 bytes. For each hashes, we have 1 uint64_t which is 8 bytes. So we have 128KB*(126+8) = 16.75MB However, when I do ./john -te=xsha512-cuda ../jtrTestSuite/XSHA512_tst.in . The john uses up to 4.4GB memory on bull. I also changed format XSHA512, set MIN_KEYS_PER_CRYPT=MAX_KEYS_PER_CRYPT = 128*1024. The situation is the same. Besides, in self test or if I gave a wordlist to john, mean I do ./john -te=xsha512-cuda ../jtrTestSuite/XSHA512_tst.in -wo=../jtrTestSuite/pw.dic, it will not take so much memory. I just curious about it. Does single or incremental mode uses so much memory? Thanks myrice
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.