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From: Ludovic Brenta <ludovic@ludovic-brenta.org>
Newsgroups: comp.lang.ada
Subject: Re: Interesting performance quirk.
Date: Tue, 28 Oct 2008 16:22:33 -0700 (PDT)
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Date: 2008-10-28T16:22:33-07:00
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Peter C. Chapin writes:
> Windows XP Laptop (GNAT GPL 2008 for the Ada, Cygwin gcc for the C)
> -----
> My Library => 11 MB/s  (with -O2 option and no debugging support)
> OpenSSL    => 65 MB/s  (Wow!)
>
> SUSE Linux in a VM on the same box
> -----
> My Library => 25 MB/s  (odd)
> OpenSSL    => 65 MB/s  (now this makes sense at least)

I believe OpenSSL uses hand-written and carefully optimised assembly
for its inner loops.

Besides that, I was wondering if by any chance you were using one 32-
bit and one 64-bit operating system; if so, which one is Linux and
which one is Windows?

--
Ludovic Brenta.