Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Thanks, I are using crc32c But fells rare because I have two machines one has: Intel(R) Core(TM)2 CPU 6320 @ 1.86GHz The other machine has: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz It is funny but when you launch the verification whatever machine the drbdworker use the same CPU :-) 32%. On Tue, Dec 6, 2011 at 2:10 PM, Florian Haas <florian at hastexo.com> wrote: > On Tue, Dec 6, 2011 at 1:51 PM, Eduardo Diaz - Gmail <ediazrod at gmail.com> wrote: >> Hi to all. >> >> I use on-line verification for my drbd instalation but I try find some >> documentation about "message digest algorithm supported by the kernel >> crypto API". > > "cat /proc/crypto" will produce a list; you can use any of the > algorithms marked "type: shash". > >> First I try to find what algorithm is less CPU use.. >> >> I dont find any information only here. >> >> http://en.wikipedia.org/wiki/Cryptographic_hash_function >> >> What is the algorithm that use less CPU? > > crc32c is just a cheap checksum, not a full-blown crypto hash, but you > can use it for DRBD verification purposes. > >> What is the algorithm that has less probability to have a Collision ? > > Feel free to peruse the literature (or google) on that one. For > collision probabilities in SHA-1, for example, this is a rather > amusing appraisal: > > http://theblogthatnoonereads.davegrijalva.com/2009/09/25/sha-1-collision-probability/ > > Hope this helps. > > Cheers, > Florian > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user