Subject: Re: Performance NetBSD vs. SunOS
To: None <port-sparc@NetBSD.ORG>
From: Ron G. Minnich <rminnich@sarnoff.com>
List: port-sparc
Date: 10/25/1996 12:43:38
> Hmm, does this approach make sense in the context of systems with say N
> or more CPU's? The MP performance of Solaris has been getting better
> and better each release, or so sun says.
yes, well, sun is doubtless one suspects committing the old felony: take
your MP code on 1 CPU, then see how much faster on N cpus, then claim you
scale by that factor.
instead of the right way: take 1 CPU running good scalar code (sunos 3.5?
sunos 4.1.2 before the strange MP hacks crept in? netbsd? linux?) then
compare to MP code on N cpus, then claim you scale by that factor.
Which looks from this dicussion like the MP "improvement" is overstated
by as much as a factor of 2?
ron