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- These numbers are for 32 iterations ("$2a$05"):
- OpenBSD 3.0 bcrypt(*) crypt_blowfish 0.4.4
- Pentium III, 840 MHz 99 c/s 121 c/s (+22%)
- Alpha 21164PC, 533 MHz 55.5 c/s 76.9 c/s (+38%)
- UltraSparc IIi, 400 MHz 49.9 c/s 52.5 c/s (+5%)
- Pentium, 120 MHz 8.8 c/s 20.1 c/s (+128%)
- PA-RISC 7100LC, 80 MHz 8.5 c/s 16.3 c/s (+92%)
- (*) built with -fomit-frame-pointer -funroll-loops, which I don't
- think happens for libcrypt.
- Starting with version 1.1 released in June 2011, default builds of
- crypt_blowfish invoke a quick self-test on every hash computation.
- This has roughly a 4.8% performance impact at "$2a$05", but only a 0.6%
- impact at a more typical setting of "$2a$08".
- The large speedup for the original Pentium is due to the assembly
- code and the weird optimizations this processor requires.
- The numbers for password cracking are 2 to 10% higher than those for
- crypt_blowfish as certain things may be done out of the loop and the
- code doesn't need to be reentrant.
- Recent versions of John the Ripper (1.6.25-dev and newer) achieve an
- additional 15% speedup on the Pentium Pro family of processors (which
- includes Pentium III) with a separate version of the assembly code and
- run-time CPU detection.
- $Owl: Owl/packages/glibc/crypt_blowfish/PERFORMANCE,v 1.6 2011/06/21 12:09:20 solar Exp $
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