On Wed, Mar 01, 2000 at 05:25:47PM -0000, Anonymous remailer wrote:
> Lutz Jaenicke wrote:
> > After having applied the patch and recompiled the necessary items,
> > I am now proud owner of both a +O3 +Oall and a +O4 +Oall share library set.
>
> It might be interesting to also try it with and without BN_LLONG defined.
> If you're running HPUX 10.X then you don't have "native" 64-bit longs,
> even on a PA8000, right? So 64-bit longs are implemented by the compiler
> via microcoded functions from the libraries. There's been some suggestion
> that the result was actually slower than just using the 32-bit version.
Ok, coming back to that issue. I had my compiler running all day long
(while doing something else :-) and have now collected some amount of
benchmark data.
1. I could not find in the documentation, whether PA8000 64bit longs are
actually used. I checked all the HP-C docs at www.docs.hp.com and the
online manuals. The information ist, that with +DA2.0 (default when
compiling on such a machine) PA8000 specific instructions are used,
but not which :-)
The results show, that the speedup is going from approximately 0 for md5
to a factor of 3 for RSA and DSA operations.
2. I have played around with the other flags, especially BN_LLONG when
compiling for DA1.1 (32bit) and DA2.0 (64bit).
The results are everything but consistent. The only consistency seems to be,
that when the kB/s for md5 et al become slower, the RSA and DSA number
become better!? I must be kidding, but it really looks that way...
I don't want to drive people on the list crazy by publishing 50kB of numbers
(since the results are a bit odd, I either show all or nothing), so I have
posted them on my WWW-site at
http://www.aet.tu-cottbus.de/personen/jaenicke/postfix_tls/openssl-results/
Best regards,
Lutz
--
Lutz Jaenicke [EMAIL PROTECTED]
BTU Cottbus http://www.aet.TU-Cottbus.DE/personen/jaenicke/
Lehrstuhl Allgemeine Elektrotechnik Tel. +49 355 69-4129
Universitaetsplatz 3-4, D-03044 Cottbus Fax. +49 355 69-4153
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