[hashcash] Re: benchmark

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the freeBSD (at least ~my~ freeBSD) weirdness continues...

so, i upgraded to gcc 3.4.2 (i thought i got rid of 2.x when i loaded this box), and rebuilt hashcash with `make x86`. aside from several notices about:
`-mcpu=' is deprecated. Use `-mtune=' or '-march=' instead.

the build seemed to go smooth.... until i tried using it. attached is my benchmark test.

MD5 (benchmark) = 8874eb41d5b5db996d23972574049e68
FreeBSD 4.9-RELEASE
CPU: AMD Duron(tm) Processor (1194.92-MHz 686-class CPU)
  Origin = "AuthenticAMD"  Id = 0x671  Stepping = 1
  
Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
  AMD Features=0xc0480000<MP,AMIE,DSP,3DNow!>

when minting stamps, i get almost a 50% failure rate:
  $ hashcash -Xm foo
  ERROR: requested 20 bits, reported 20 bits, got 1 bits using AMD64/x86 MMX Standard 
1x2-pipe minter: "1:20:040915:foo::ryzM4fvR3J/CGAf9:00002xgx"

0bit stamp - hangs
1bit stamp ~ 20% failure
2bit stamp ~ 35% failure
3bit stamp ~ 40% failure
4bit stamp ~ 47% failure
...
20bit stamp ~ 51% failure


any ideas?

i'm using generic in the meantime...


    ...atom

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    Rate  Name (* machine default)

          ANSI Compact 1-pipe
  1137824 ANSI Compact 1-pipe  
    Solution:   1:22:040404:foo::0123456789abcdef:0000000JaED
    Iterations: 5129101
    Time taken: 4.508

          ANSI Standard 1-pipe
  1345337 ANSI Standard 1-pipe  
    Solution:   1:22:040404:foo::0123456789abcdef:0000000JaED
    Iterations: 5129101
    Time taken: 3.812

          ANSI Ultra-Compact 1-pipe
  1176567 ANSI Ultra-Compact 1-pipe  
    Solution:   1:22:040404:foo::0123456789abcdef:0000000JaED
    Iterations: 5129101
    Time taken: 4.359

          ANSI Compact 2-pipe
  1326312 ANSI Compact 2-pipe  
    Solution:   1:22:040404:foo::0123456789abcdef:0000000JaED
    Iterations: 5129101
    Time taken: 3.867

          ANSI Standard 2-pipe
  1370615 ANSI Standard 2-pipe  
    Solution:   1:22:040404:foo::0123456789abcdef:0000000JaED
    Iterations: 5129101
    Time taken: 3.742

   ---    PowerPC Altivec Standard 1x4-pipe  (Not available on this machine)
   ---    PowerPC Altivec Compact 2x4-pipe  (Not available on this machine)
   ---    PowerPC Altivec Standard 2x4-pipe  (Not available on this machine)
          AMD64/x86 MMX Compact 1x2-pipe
ERROR!
    Wanted 22 bits, reported 22 bits, got 1 bits.
    End-of-block marker remains intact.
    "1:22:040404:foo::0123456789abcdef:0000000ih8L"
    Time taken: 6.586

          AMD64/x86 MMX Standard 1x2-pipe
ERROR!
    Wanted 22 bits, reported 22 bits, got 1 bits.
    End-of-block marker remains intact.
    "1:22:040404:foo::0123456789abcdef:0000000ih8L"
    Time taken: 6.320

Best minter: ANSI Standard 2-pipe (1370615 hashes/sec)
Projected average times to mint:
  8 bits:     0.000 seconds (186.8 microseconds)
 10 bits:     0.001 seconds (747.1 microseconds)
 16 bits:     0.048 seconds
 20 bits:     0.765 seconds
 22 bits:     3.060 seconds
 24 bits:    12.241 seconds
 26 bits:    48.963 seconds
 28 bits:   195.850 seconds (3.3 minutes)
 30 bits:   783.401 seconds (13.1 minutes)

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