Oded Arbel wrote:
> Hi list.
> ...
> First I've run the OpenSSL speed test on several machines I have
> access to, and summerized the 512b and 4096b keys verifys/sec. to make
> a long story short, the AMD Duron 700MHz I'm running at home had
> 7202,202 respectivly, while the P4 1.5GHz I'm running at work showed
> 6910,191 respectivly.
what is sample size ? what is standard deviation ? what are significant
digits ?
>
> I was thinking to myself - I know that Pentium 4 uses a radicly
> different processor architecture then P3 and other x86 compatibles and
> needs to have programs recompiled to it for the best performance (IIRC
> I've read it somewhere).
> I tried to recompile OpenSSL for my Penitum 4 - apparently it wasn't
> that easy.
what compiler version ? did you try intel's compiler ?
>
> I just went ahead and ran 'openssl speed' on the binary produced in
> the build directory. interestingly enough, the results were even lower
> (!) then the previous benchmark on the same machine.
again, could be measurement error .
> BTW - It's a P4 with SDRAM, while the Duron is sporting DDRs. not that
> I think it matters, as the OpenSSL speedtest is about raw processing
> power and not memory bandwidth - a lowley 72pin DRAM can handle the
> memory requirements of that benchmark.
compile it statically, send it to a friend with RDRAM P4 , test
hypothesis ...
(also IIRC there are utilities to measure cache miss ratio, STW for one)
--
-- regards
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