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